Expression Or Special Effects (e.g., Force Or Velocity Responsive, Etc.) Patents (Class 84/626)
  • Patent number: 5585587
    Abstract: An acoustic image localization apparatus localizes an acoustic image of a plurality of tone color species having various timbres to a source point with respect to a listening point within a sound field. Desired ones of separate source points are specified, which are provisionally set throughout the sound field. Each of the tone color species is assigned to one or more of the specified source points such that each specified source point is assigned with a group of desired tone color species. Acoustic images of the respective groups are localized to corresponding ones of the specified source points. Further, one of separate listening points is designated, which is provisionally set relatively to the source points so that the acoustic images are localized with respect to the designated listening point.
    Type: Grant
    Filed: September 7, 1994
    Date of Patent: December 17, 1996
    Assignee: Yamaha Corporation
    Inventors: Toshihiro Inoue, Hiroyuki Torimura
  • Patent number: 5583308
    Abstract: In an automated system for learning to play a musical instrument, music data and tone control data for a musical composition of an exemplary musical instrument is stored in machine readable form. An audio signal generated by a musical instrument being played, corresponding to the exemplary musical instrument, is inputted through a musical effects apparatus wherein the musical tone of the musical instrument being played is mixed with the stored music data. The musical effects apparatus is utilized, under digital control, to match the musical tone of the musical instrument being played with that of the exemplary musical instrument. More particularly, the music data and tone control data of the musical composition are stored on a conventional CD-ROM. The tone control data is utilized to create control parameters which can be used to control one or more electronic effects devices in an automated fashion.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: December 10, 1996
    Assignee: Maestromedia, Inc.
    Inventor: Randall L. Owen
  • Patent number: 5561257
    Abstract: A control system for a musical instrument, e.g., an electric guitar, which is programmable so that a tremolo characteristic can be applied to the audio signal produced by the musical instrument. The tremolo characteristic can be comprised of a combination of three preset amplitude components and three preset frequency components. The control system can also be used to dynamically vary the volume characteristic of the audio signal produced by the musical instrument. Specifically, the control system includes a tactile member which produces a signal proportionate to the pressure exerted on the tactile member by the musician. This signal can be used to increase the volume characteristic of the musical instrument while the musician is playing the musical instrument.
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: October 1, 1996
    Assignee: Sound Ethix, Corp.
    Inventors: Max L. Cardey, III, Gustavo Dimidjian
  • Patent number: 5559298
    Abstract: An electronic musical instrument produces musical tones based on waveform data, while providing smooth changes between different timbres and at the same time avoiding reduction in the efficiency of waveform compression. The timbre change is carried out in an interpolation interval, the magnitude of which varies in accordance with the magnitude of the timbre change. The data necessary to establish the interpolation interval may be stored and read out of a memory or may be determined by interpolation according to a linear function.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: September 24, 1996
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventor: Seiji Okamoto
  • Patent number: 5546466
    Abstract: When a plurality of effects are simultaneously applied to an input audio signal, a plurality of effect-algorithms each for applying solely an effect to the input signal are stored in a memory, and a plurality of combination-algorithms or combination-data which represent combinations of the effects and orders in which effects are applied to the input audio signal are stored in the memory. When one of the combination-algorithms or the combination-data is selected, effect-algorithms included in the selected combination-algorithm or combination-data are selectively read out from the memory. A program for applying effects in a predetermined combination and order is written by CPU based on the read out effect-algorithms and combination-algorithm or combination-data. Receiving the program, DSP successively applies effects to the input audio signal in accordance with the program.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: August 13, 1996
    Assignee: Casio Computer Co., Ltd.
    Inventors: Shiro Ishiguro, Masatoshi Watanuki, Toshiaki Kawanishi, Kohtaro Hanzawa, Hiroyuki Sasaki, Jun Yoshino
  • Patent number: 5541356
    Abstract: An electronic musical tone controller having an input operator for inputting a degree of a sensory expression representing the quality of a musical tone and generating an input parameter, a controller for controlling an electrical parameter and a circuit parameter for controlling a waveform of a signal of the musical tone, a musical tone signal generator for generating a signal of the musical tone in accordance with the electrical parameter and the circuit parameter, and a logical calculation unit for performing a fuzzy calculation and generating an output parameter for controlling the electrical parameter and the circuit parameter, by using the input parameter generated by the input operator unit.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 30, 1996
    Assignee: Yamaha Corporation
    Inventor: Satoshi Usa
  • Patent number: 5541357
    Abstract: In the sound source system, the waveform sampled from the sounds of keys pressed down with two or more kinds of intensity are synthesized in a specified rate, thereby forming the waveform of the sounds of keys pressed down with the other kind of intensity. Thus, almost the actual instrumental deep sounds can be reproduced. The sound waveform sampled from weak key presses is passed through a low pass filter, and the filtered waveform composed only of low order harmonic components is transformed to weak press data in the pulse code modulation system for the storage. Similarly, the sound waveform sampled from strong key presses are passed through a high pass filter, thereby removing the low order harmonic components. The filtered waveform composed only of the high order harmonic components are transformed to strong press data in the pulse code modulation system for the storage. The high pass filter can remove the frequency components which pass through the low pass filter.
    Type: Grant
    Filed: June 2, 1994
    Date of Patent: July 30, 1996
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventors: Hiroshi Sato, Gen Izumisawa, Jiro Tanaka, Kiyomichi Kushimiya
  • Patent number: 5524521
    Abstract: A method and apparatus for accurately sensing key motion in a keyboard operated musical instrument, in which optical emitters and sensors are positioned above the hammer shanks. The optical emitters and sensors are arranged on a plurality of individually addressable sensor boards, and the sensor boards are divided into a plurality of individually addressable sensor banks. Each sensor board is independently and sequentially activated by a controller according to a specified timing sequence. As the controller activates a sensor board in one bank, allowing the board to warm up, another sensor board in the second bank, which has previously been activated and warmed up, is read and analyzed by the controller. Activation and reading of sensor boards alternates between sensor banks as the sensor boards are sequenced through.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: June 11, 1996
    Assignee: Burgett, Inc.
    Inventors: Pamela K. Clift, Charles R. Lee
  • Patent number: 5508470
    Abstract: An indication or image on a display unit is switched in response to changes in performance data of a tune which is being played automatically. Tone pitch data included in the performance data are detected, and the indication (image) on a display is switched in response to changes in the detected tone pitch data. Velocity data and tone color data in the performance data may be used in place of the tone pitch data. If a tune is automatically played based on a plurality of performance data which are simultaneously read out, the indication on the display is switched based on changes in either of the plurality of performance data. If switching data representing changes of rhythm of the tune is included in the performance data, the switching data are detected, and are used to change a way of switching the indication (image) on the display. The indication or image on the display may be switched at timings based on beats or strong beats or at timings of measures.
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: April 16, 1996
    Assignee: Casio Computer Co., Ltd.
    Inventors: Yoichiro Tajima, Mayumi Ohya
  • Patent number: 5498836
    Abstract: A controller for controlling a plurality of parameters to be used by a physical model tone signal synthesizer electronically simulating a tone generating mechanism of a natural musical instrument. In accordance with musical performance signals such as dynamics and tone color entered by a player, musical instrument playing parameters such as breath and embouchure, or bow speed and bow pressure, are generated by using correlation functions.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: March 12, 1996
    Assignee: Yamaha Corporation
    Inventors: Tetsuo Okamoto, Satoshi Usa
  • Patent number: 5478969
    Abstract: A control system for a musical instrument, e.g., an electric guitar, which is programmable so that a tremolo characteristic can be applied to the audio signal produced by the musical instrument. The tremolo characteristic can be comprised of a combination of three preset amplitude components and three preset frequency components. The control system can also be used to dynamically vary the volume characteristic of the audio signal produced by the musical instrument. Specifically, the control system includes a tactile member which produces a signal proportionate to the pressure exerted on the tactile member by the musician. This signal can be used to increase the volume characteristic of the musical instrument while the musician is playing the musical instrument.
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: December 26, 1995
    Assignee: Sound Ethix Corp.
    Inventors: Max L. Cardey, III, Gustavo Dimidjian
  • Patent number: 5478968
    Abstract: A moment at which each of a plurality of pieces of sound data is generated in response to one sounding operation is controlled, and the plurality of pieces of sound data are output to different sounding units. Consequently, differences occur among moments at which sounds are radiated by the sounding units, resulting in an occurrence of differences among lengths of time taken by the sounds to reach the ears of a listener, whereby a stereophonic sound can be produced and the listener can localize a sound image.
    Type: Grant
    Filed: December 27, 1991
    Date of Patent: December 26, 1995
    Assignee: Kawai Musical Inst. Mfg. Co., Ltd.
    Inventors: Hiroshi Kitagawa, Gen Izumisawa
  • Patent number: 5473108
    Abstract: An electronic musical instrument reads data of a musical tone from a waveform memory thereof according to pitch information input thereto, to form a tone signal containing a tone amplitude signal indicative of amplitude of the musical tone. The tone signal is passed into a plurality of signal paths to be formed into a plurality of analog tone signals. The plurality of signals paths each amplify the tone amplitude signal according to a note on/off velocity, and attenuate a plurality of modifications of the tone signal, depending on or not depending on the note on/off velocity and the pitch information on the musical tone, to generate a musical tone suitably reflecting the note on/off velocity and the pitch.
    Type: Grant
    Filed: January 6, 1994
    Date of Patent: December 5, 1995
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventors: Eiji Matsuda, Gen Izumisawa, Hiroshi Kitagawa
  • Patent number: 5473107
    Abstract: A selector is provided for selecting a predetermined effect. Instruction as to whether this effect should be imparted or not is not made instantly in response to an output of this selector but made in association with instruction of start of tone generation by a key-on event signal. For example, even when a state in which an effect is selected is brought about in the course of generation of a tone without selecting an effect, this effect is not imparted to the tone which is currently being generated. Upon instruction of generation of another new tone in this state, instruction of imparting of the effect is made for the new tone so that the effect is imparted to the new tone from the start of generation of the tone. Conversely, when a state in which no effect is selected is brought about in the course of generation of a tone which is imparted with an effect, the effect is kept imparted to the tone which is currently being generated until generation of the tone is ended.
    Type: Grant
    Filed: October 15, 1992
    Date of Patent: December 5, 1995
    Assignee: Yamaha Corporation
    Inventor: Kotaro Mizuno
  • Patent number: 5453571
    Abstract: An electronic musical instrument includes a key support portion, a plurality of keys pivotally supported on the key support portion, a musical tone signal generator, after sensors, and a musical tone signal control unit. The musical tone signal generator generates a musical tone signal corresponding to each of the plurality of keys. Each after sensor has a plurality of sensors and is arranged in correspondence with the plurality of keys and operated near key depression end positions to for independently generate pieces of key information. The musical signal control unit controls the musical tone signal generator on the basis of the key information.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: September 26, 1995
    Assignee: Yamaha Corporation
    Inventors: Takeshi Adachi, Yasuhiko Asahi, Satoshi Suzuki, Jun-ichi Mishima
  • Patent number: 5453568
    Abstract: An indication or image on a display unit is switched in response to changes in performance data of a tune which is being played automatically. Tone pitch data included in the performance data are detected, and the indication on the display unit is switched in response to changes in the detected tone pitch data. Velocity data and tone color data in the performance data may be used in place of the tone pitch data. If a tune is automatically played based on a plurality of performance data which are simultaneously read out, the indication on the display unit is switched based on changes in either of the plurality of performance data. If switching data representing changes of rhythm of the tune is included in the performance data, the switching data are detected, and are used to change a way of switching the indication (image) on the display unit. The indication or image on the display unit may be switched at timings based on beats or strong beats or at timings of measures.
    Type: Grant
    Filed: September 15, 1992
    Date of Patent: September 26, 1995
    Assignee: Casio Computer Co., Ltd.
    Inventors: Yoichiro Tajima, Mayumi Ohya
  • Patent number: 5453569
    Abstract: An automatic performance apparatus extracts characteristic data indicating individuality of performance of a player from performance data, compensates for score data exhibiting no individuality by the characteristic data, and executes an automatic performance using the compensated data. The apparatus includes a characteristic extraction unit and a characteristic regeneration unit. The characteristic extraction unit extracts characteristic data on the basis of a correlation between performance data and score data, and stores the extracted data in a characteristic data storage unit. The characteristic data is extracted with regard to styles of performance in association with notes, signs attached to the notes, dynamic marks, tempo marks, the general flow of music, and the like with reference to score data exhibiting no individuality. The characteristic regeneration unit compensates for arbitrary score data with the stored characteristic data to generate performance data.
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: September 26, 1995
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventors: Tsutomu Saito, Naoto Utsumi
  • Patent number: 5436403
    Abstract: An automatic performance apparatus has a memory, a reading out circuit, a parameter creating circuit, and a tone generating circuit. Initially, basic performance data corresponding to the basic performance of a musical piece and musical expression data corresponding to musical expression to be imparted to the basic performance are stored in the memory according to the progress of the musical piece. Next, when the basic performance data and musical expression data are read out from the memory by the reading out circuit in due order, the parameter including musical expression is created based on the read out basic performance data and musical expression data in the parameter creating circuit. Accordingly, this parameter is supplied to the tone generating circuit and a musical tone signal to which musical expression is imparted is formed in the tone generating circuit.
    Type: Grant
    Filed: December 8, 1993
    Date of Patent: July 25, 1995
    Assignee: Yamaha Corporation
    Inventor: Satoshi Usa
  • Patent number: 5434348
    Abstract: A electronic keyboard instrument for producing an artificial sound, including a plurality of keys; waveform-forming structure for generating a signal indicative of a waveform of an artificial sound corresponding to one of the keys, when the one of the keys is depressed; at least one operating element; detecting structure for detecting whether or not the at least one operating element is being operated; and waveform-modifying structure for modifying the signal indicative of the wave form depending on results of detection by the detecting structure, the waveform-modifying structure including envelope-determining structure for determining an envelope of the wave form of the artificial sound, and envelope-modifying structure for outputting a modification value used in changing an output from the envelope-determining structure depending on results of detection by the detecting structure.
    Type: Grant
    Filed: July 8, 1993
    Date of Patent: July 18, 1995
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventors: Eiji Matsuda, Tetsuya Hirano
  • Patent number: 5432295
    Abstract: A play data recording apparatus for a keyed musical instrument converts keying strength information, which is detected by an appropriate detector when one of keys of a keyboard apparatus is operated, into reference keying strength information based on the relationship obtained in advance between keying strength information detected when one of the keys of the keyboards is operated at an arbitrary one or ones of fractionized reference sound volumes and reference keying strength information obtained by digitizing the fractionized reference sound volumes, and then causes the reference keying strength information obtained by the conversion to be stored as one of play data into a storage device.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: July 11, 1995
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventors: Hiroshi Matsunaga, Tetsusai Kondo
  • Patent number: 5422430
    Abstract: An electronic musical instrument capable of providing an optimum sound field localization, such as key scale panning, suitable for a tone color selected from a plurality of tone colors by a player. A panning data for dividing a tone signal into right and left tone signals is generated in accordance a selected tone color and tone pitch of a tone signal to be generated. The panning is executed by using the panning data.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: June 6, 1995
    Assignee: Yamaha Corporation
    Inventors: Tadahiko Ikeya, Tokuji Hayakawa
  • Patent number: 5410603
    Abstract: When a plurality of effects are simultaneously applied to an input audio signal, a plurality of effect-algorithms each for applying solely an effect to the input signal are stored in a memory, and a plurality of combination-algorithms or combination-data which represent combinations of the effects and orders in which effects are applied to the input audio signal are stored in the memory. When one of the combination-algorithms or the combination-data is selected, effect-algorithms included in the selected combination-algorithm or combination-data are selectively read out from the memory. A program for applying effects in a predetermined combination and order is written by CPU based on the read out effect-algorithms and combination-algorithm or combination-data. Receiving the program, DSP successively applies effects to the input audio signal in accordance with the program.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: April 25, 1995
    Assignee: Casio Computer Co., Ltd.
    Inventors: Shiro Ishiguro, Masatoshi Watanuki, Toshiaki Kawanishi, Kohtaro Hanzawa, Hiroyuki Sasaki, Jun Yoshino
  • Patent number: 5406022
    Abstract: A device for use in an electronic musical instrument, in which a sound image is varied according to musical factors of musical tones. For example a sound image position, a number of sound images and/or a sound image shift pattern are varied according to a sounding order, a sound part, a tone color and/or effects. In this way, the sound image can be varied according to the contents of musical tones to realize play with a high spatial impression.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: April 11, 1995
    Assignee: Kawai Musical Inst. Mfg. Co., Ltd.
    Inventor: Ikuo Kobayashi
  • Patent number: 5406021
    Abstract: An electronic musical instrument employing a keyboard unit provides a position sensor with respect to each of plural keys so as to detect a depressed position of the key in a real-time manner. A key-operating velocity is calculated from the depressed positions of the key which are sequentially detected by the position sensor. A critical velocity is determined in advance with respect to each of the depressed positions of the key. The critical velocity is defined as a minimum velocity by which a hammer can strike a string when a hammer moves from a position corresponding to each of the depressed positions of the key. One of the channels is selected in accordance with a predetermined algorithm on the basis of a result of a judging operation which judges whether or not the key-operating velocity exceeds the critical velocity corresponding to a current depressed position of the key. Then, a tone-generation task to produce a musical tone signal responsive to a key-operation event is assigned to a selected channel.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: April 11, 1995
    Assignee: Yamaha Corporation
    Inventor: Tatsuhiro Koike
  • Patent number: 5403970
    Abstract: A control apparatus, for an electronic musical instrument and other electronic apparatuses, comprises a freely operable operation rod having an operation gripping portion at a distal end of the rod, X- and Y-position detectors for respectively detecting X- and Y-positions of the operation rod, and a pressure or rotation amount detector for detecting an operation pressure operating on the operation rod or a rotational amount of the operation rod about an axis thereof. The control apparatus can input a pressure or rotational amount detection signal of the operation rod to a control object together with X- and Y-position detection signals. An electronic musical instrument has the control apparatus as a performance operation member for controlling electronic tone generation parameters in correspondence with a performance function of a kind of instrument, and a physical sound source for generating an electronic tone on the basis of inputs from a keyboard and the performance operation member.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: April 4, 1995
    Assignee: Yamaha Corporation
    Inventor: Eiichiro Aoki
  • Patent number: 5403968
    Abstract: Timbre control apparatus, for an electronic musical instrument that, in response to a tone-ON command, reads timbre data from storage memory where a plurality of timbre data to be employed have previously been stored, and produces musical tones in consonance with the timbre data. The timbre control apparatus has a first storage memory for storing first timbre data common to all tone ranges; a second storage memory for storing second timbre data inherent to specific tone ranges; a calculation circuit for, in response to a tone-ON command, performing a predetermined calculation employing the first timbre data read from the first storage memory and the second timbre data read from the second storage memory; and tone production circuit for producing a musical tone having a predetermined timbre in consonance with data calculated by the calculation circuit.
    Type: Grant
    Filed: August 18, 1993
    Date of Patent: April 4, 1995
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventor: Yasushi Sato
  • Patent number: 5403971
    Abstract: An electronic musical instrument having portamento function comprises playing keys, a musical tone signal generating device, a key depression detection device, and a control device. The key depression detection device detects a displacement of a depressed key. The control device, when a new key depression occurs following a previous key depression, controls, a tone pitch of the musical tone signal generated by the musical tone generation device to change continuously from a tone pitch of the previously depressed key to a tone pitch of the new depressed key in response to displacement of the new depressed key.
    Type: Grant
    Filed: April 5, 1993
    Date of Patent: April 4, 1995
    Assignee: Yamaha Corpoation
    Inventor: Eiichiro Aoki
  • Patent number: 5391830
    Abstract: A foot pedal control system incorporated in an electrical musical keyboard instrument is expected to decide an output signal of a foot control pedal unit to be either analog or digital signal on the basis of a series of discrete voltage levels through periodical sampling on the output signal, and a microcomputer system of the foot pedal control system executes a program sequence for periodically monitoring the discrete voltage level, deciding the digital signal to be either analog or digital signal and determining an instruction of a player represented by the output signal.
    Type: Grant
    Filed: May 25, 1993
    Date of Patent: February 21, 1995
    Assignee: Yamaha Corporation
    Inventors: Toshihiro Nishino, Rei Furukawa, Takashi Tamaki
  • Patent number: 5389730
    Abstract: An emphasize system for an electronic musical instrument including filter and control device. The filter extract and output predetermined frequency range component of an input musical tone signal. The control device control the level of an output from the filter at least on the basis of an output from an envelope generator which controls the level of the input musical tone signal, or on the basis of the level of another frequency range component of the input musical tone signal. At least the level controlled signal is outputted from the system.
    Type: Grant
    Filed: March 20, 1991
    Date of Patent: February 14, 1995
    Assignee: Yamaha Corporation
    Inventor: Masatada Wachi
  • Patent number: 5387759
    Abstract: An automatic performance apparatus stores performance technique designating data and an automatic performance data in a sequence memory, and performance technique data which varies in a lapse of time in a performance data memory to reduce the amount of sequence memory. When the performance technique designating data is detected during the performance, the performance technique data corresponding to the detected performance technique designating data is read out. The performance technique data controls musical tones specified by the automatic performance data. Thus, various performance technique can be realized with a small amount of sequence data.
    Type: Grant
    Filed: March 24, 1992
    Date of Patent: February 7, 1995
    Assignee: Yamaha Corporation
    Inventor: Satoshi Usa
  • Patent number: 5381719
    Abstract: A blower provided, for example, at the bottom of a predetermined concavity in an electronic keyboard instrument supplies an air blast to a light ball to blow same up, using a fan rotated by a motor. In this case, a motor controller controls the rotational speed of the motor on the basis of the amplitude of a tone signal output from an amplifier. As a result, the ball moves up and down in accordance with the amplitude of the tone signal. The motor controller may control the rotational speed of the motor on the basis of a pitch for controlling the generation of a tone signal, velocity, timbre, automatic performance tempo, rhythm pattern or a change in the pitch or a combination of some or all of them, and not on the basis of the amplitude of the generated tone signal by itself.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: January 17, 1995
    Assignee: Casio Computer Co., Ltd.
    Inventor: Toshihiko Otsuka
  • Patent number: 5373096
    Abstract: The present invention provides a musical sound control device wherein, based on the movements of the fingers or other body parts of the performer, control of pitch bender and vibrato effects can easily achieved, and wherein the mobility and dexterity of each of the five digits of a human hand have been taken into careful consideration, whereby touch intensity musical control can be achieved.The present invention provides detectors which can be applied to various portions of a performer's body, whereby movement of each body portion to which the detectors have been applied can be detected. Additionally, the present invention provides a control signal generator, whereby based on the output of the above mentioned detectors a musical control signal is generated.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: December 13, 1994
    Assignee: Yamaha Corporation
    Inventors: Hideo Suzuki, Masao Sakama
  • Patent number: 5367118
    Abstract: Waveform data written in a RAM 2 base on write addresses is always read out as two waveform data from two read addresses 1 and 2 designated by a CPU 1, and two interpolation data 1 and 2 are formed. A smaller address difference A between the write address and the read address 1 is multiplied with the interpolation data 1 as an envelope value to obtain cross-fade data 1. Similarly, cross-fade data 2 corresponding to the read address 2 is obtained. The two items of cross-fade data 1 and 2 are added to each other to obtain output waveform data. An envelope value of waveform data near a waveform discontinuous point becomes almost zero, and click noise can be eliminated.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: November 22, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventor: Makoto Iwaooji
  • Patent number: 5350881
    Abstract: A striker designed to strike or be swung for playing music is provided with a musical sound-initiating command signal-generating device including switching members. When the striker strikes or swings, the switching members perform a switching action which triggers the transmitting of a musical sound-initiating command signal from the musical sound-initiating command signal-generating device. A desired musical sound is produced by a musical sound producing unit in response to the musical sound-initiating command signal. A number of different timbres can be selectively used for a musical tone, by operating a timbre-selecting switch provided on the striker.
    Type: Grant
    Filed: July 10, 1992
    Date of Patent: September 27, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventors: Yukio Kashio, Yoneaki Arai
  • Patent number: 5347087
    Abstract: In a waveform memory, data representing a silent state, e.g., zero value data, is stored in a predetermined first address area and waveform data is stored in a second address area. In response to designation of tone generation, the data representing a silent state is read from a desired number of address locations and, thereafter, tone waveform data is read from a second address area. By this control, time during which the data representing a silent state is read out, i.e., delay time, is determined by the number of address locations and, therefore, absolute time of the delay time is not constant but corresponds to an amount progress of the address signal, i.e., its phase amount. Accordingly, phase relation in a key-on delay can be made independent from tone pitch.
    Type: Grant
    Filed: December 3, 1992
    Date of Patent: September 13, 1994
    Assignee: Yamaha Corporation
    Inventor: Koichi Kozuki
  • Patent number: 5319151
    Abstract: In a musical tone waveform generation apparatus for outputting musical tone signals generated by a software program at predetermined time intervals, sound source methods can be selected in units of tone generation channels. In the musical tone waveform generation apparatus, the sound source method or the tone color of a musical tone signal to be output is determined in accordance with performance data (pitch data, touch data, music part data, and the like). A musical tone signal is generated by CPU upon execution of a sound source processing program, associated with a modulation method stored in a memory. The generated musical tone signal is output at predetermined time intervals. As for sound source processing based on the modulation method, at least one operator processing, and algorithm processing for determining an input/output relationship among the operator processing operations are independently executed.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: June 7, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventors: Kosuke Shiba, Koichiro Daigo, Kazuo Ogura, Ryuji Usami, Jun Hosoda
  • Patent number: 5317947
    Abstract: A musical tone generator according to the present invention can simultaneously write parameter data at a plurality of storage positions of a parameter storage apparatus for storing various parameters, which characterize a musical tone to be generated, by only one write command. According to the present invention, software can be simplified, and a write execution time can be shortened.
    Type: Grant
    Filed: August 18, 1992
    Date of Patent: June 7, 1994
    Assignee: Yamaha Corporation
    Inventor: Satoshi Miyata
  • Patent number: 5315058
    Abstract: An electronic musical instrument has an electronic sound source of a physical model simulating the sound mechanism of an acoustic mechanical instrument, in particular, a stringed instrument of the bowing type. The electronic sound source is controlled according to tone pitch information and tone information determining a characteristic of a musical tone to be generated. A keyboard is provided as a data input device by which tone pitch is designated and on which a performance manner is expressed via initial touch and after touch. A memory stores two sets of performance information, each set containing bowing force and bowing velocity information. An interpolating unit operates to access the memory for carrying out interpolation between the two sets of performance information according to the performance manner, and produces respective interpolated performance information regarding bowing force and bowing velocity information effective to control the artificial sound source.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: May 24, 1994
    Assignee: Yamaha Corporation
    Inventors: Tetsuo Okamoto, Satoshi Usa
  • Patent number: 5308917
    Abstract: This invention discloses a touch response setting apparatus with which a player can rewrite a touch response curve for converting key touch data into tone generation tone level data. The touch response curve is defined by a polygonal line having at least a low touch setting point and a high touch setting point, and is stored in a RAM which receives a key touch input as an address, and outputs tone level data. In a test mode, low-touch (piano) and high-touch (forte) key operations corresponding to the touch setting points are performed, and an average value of a plurality of key depression strengths upon these key operations is obtained. When a predetermined value is given as tone level data corresponding to a touch average value at each touch setting point, the inclination of each segment of the polygonal line is determined. Thus, points on the segments are interpolated, and generated touch response curve data is stored in the RAM.
    Type: Grant
    Filed: December 2, 1992
    Date of Patent: May 3, 1994
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventors: Mineo Kitamura, Yutaka Washiyama
  • Patent number: 5304734
    Abstract: A musical tone synthesizing apparatus for synthesizing musical tones generated by acoustic instruments. In the musical tone synthesizing apparatus, a closed loop circuit is provided to simulate the vibration of a vibrating element, for example, a string of piano. Additionally provided is a excitation and damping control unit for generating signals to be introduced to the closed loop circuit. When generating musical tones, the excitation and damping control unit generates an excitation signal corresponding to the excitation operation applied to the vibrating element from a excitation element, for example, a hamper of piano. When damping the musical tones, the excitation and damping control unit generates a signal corresponding to the excitation operation applied to the vibrating element from a damping element, for example, a damper of piano.
    Type: Grant
    Filed: June 19, 1991
    Date of Patent: April 19, 1994
    Assignee: Yamaha Corporation
    Inventor: Toshifumi Kunimoto
  • Patent number: 5292996
    Abstract: A microcomputer with a sound effect output function, comprising a register 24 for temporarily storing a parameter specifying a sound effect to be output, a sound effect generating block 26 for outputting a signal representing a sound effect according a parameter supplied from the register 24, an output pattern setting register 25 for temporarily storing a repetition pattern of a sound effect signal supplied by the sound effect generating block 26, and an output control block 28 for outputting the sound effect signal, supplied from the sound effect generating block 26, according to the repetition pattern supplied from the output pattern setting register 25.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: March 8, 1994
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Ryuichi Ogawa
  • Patent number: 5292995
    Abstract: Tone control of an electronic musical instrument is provided using fuzzy inferences for determining musical tone control parameters such as pitch, sounding level, effect, overtone composition, playing methods, etc. Several different kinds of play information are derived from controls operated by the performer and selectively taken into account using fuzzy inference rules to derive the musical tone control parameters. Several different types of play information, such as initial touch, after touch, key-on time, etc., may thus be combined to provide delicate nuances to the musical performance providing a more natural sounding tone and providing the capability to give the musical tone an expression corresponding to a method or technique of a musical performance.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: March 8, 1994
    Assignee: Yamaha Corporation
    Inventor: Satoshi Usa
  • Patent number: 5290966
    Abstract: A control apparatus for an electronic musical instrument or other electronic apparatuses comprises a main body constituting an operation gripping section, a rotary member held in the main body to freely roll on an X-Y plane, a moving amount detector for detecting moving amounts of the rotary member in X- and Y-directions upon rolling of the rotary member, and a pressure detector for detecting a pressure effected on the main body. The control apparatus inputs control signals to a control object on the basis of detection values of the moving amount detector and pressure detector. An electronic musical instrument has the control apparatus as a performance operation member for controlling electronic tone generation parameters in correspondence with a performance function, and a sound source for generating an electronic tone on the basis of inputs from a keyboard and the performance operation member.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: March 1, 1994
    Assignee: Yamaha Corporation
    Inventor: Eiichiro Aoki
  • Patent number: 5290964
    Abstract: A musical tone control apparatus controls a musical tone corresponding to a movement itself of an object and the like which is detected by a detector Such detector detects also a moving speed, a moving force, a moving angle or an intensity of given impulse of the object. In the case where the detector is mounted in the vicinity of a player's joint, the detector detects a revolving or bending angle of the player's joint. Hence, the musical tone can be controlled based on such angle of the player's joint. Thus, through this musical tone control apparatus, the player can generate a musical tone having, for example, a desirable tone pitch, a desirable volume and a desirable tone color based on the movement of the object or the player's joint.
    Type: Grant
    Filed: September 10, 1992
    Date of Patent: March 1, 1994
    Assignee: Yamaha Corporation
    Inventors: Teruo Hiyoshi, Kinpara Mamoru, Suzuki Hideo, Akira Nakada, Eiichiro Aoki, Masao Sakama
  • Patent number: 5288941
    Abstract: A parameter setting apparatus, which can independently set parameter values for controlling tones in units of parameters. Operation member sets, each including UP and DOWN operation members and a PRESET operation member, are arranged on an operation panel (2) in correspondence with parameters. When a user depresses a given PRESET operation member, a preset value supplier (21) reads out a preset value of the corresponding parameter from preset data stored in a preset memory (6), and supplies the readout value to a working memory (5), thereby rewriting the value of the corresponding one of parameters stored in the working memory (5) with the readout preset value. Upon operation of an UP or DOWN operation member, the value of the corresponding parameter in the working memory (5) is incremented or decremented.
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: February 22, 1994
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventor: Makoto Sekizuka
  • Patent number: 5286911
    Abstract: An electronic rubbed-string instrument of a type which generates musical tones in response to rubbing operation of operation member across an instrument body or string in a similar way to a violin and a viola. When a part of instrument body is rubbed with an operating member, characteristics (e.g., tone color characteristics, pitch characteristics) of a musical tone to be generated are controlled in response to a speed of the operating member. Further, the characteristics of the musical tone are controlled in response to pressure applied to a part of the instrument body with the operating member. Furthermore, the characteristics of the musical tone are controlled in response to a direction in which the bow is moved across the strings.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: February 15, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventors: Yoshiyuki Murata, Tatsuya Dejima
  • Patent number: 5283388
    Abstract: An auto-play apparatus for an electronic musical instrument having a plurality of auto-play phrase data stored in memory and accessible through corresponding keys. Note data corresponding to the auto-play phrase data being stored in a separate memory. The apparatus includes an editing function for collectively shifting the pitch of note data constituting a auto-play phrase up or down an octave for easy editing. A shift limit feature prevents the pitch shift function when the result would exceed a preset upper or lower limit.
    Type: Grant
    Filed: August 21, 1992
    Date of Patent: February 1, 1994
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventor: Yoshihisa Shimada
  • Patent number: 5281755
    Abstract: Disclosed is an apparatus for automatic playing of a musical instrument. This apparatus has holding means for holding pedal play information that is included in play information that is read from storage means. During a fast forward or a fast reverse operation, the apparatus for automatic playing of a musical instrument holds in the holding means the most recent history of pedal play information, and when the operation is released, and in advance of the execution of play information for keys, the apparatus drives a pedal terminal in consonance with the retained pedal play information, and then reproduces music.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: January 25, 1994
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventors: Haruhiko Matsui, Tetsusau Kondo
  • Patent number: 5274191
    Abstract: An electronic musical instrument has a fuzzy inferring function. The instrument is provided with a rule storage memory for storing a plurality of fuzzy rules each of which is selectable. The instrument fuzzy-infers musical tone control parameters, such as a control amount of amplitude fluctuation, a control amount of pitch fluctuation, a control amount of noise or the like, based on the inputted playing data according to selected fuzzy rules. The instrument has a fuzzy rule input device for inputting desirable fuzzy rules which are used as a part of the stored plurality of fuzzy rules.
    Type: Grant
    Filed: July 9, 1992
    Date of Patent: December 28, 1993
    Assignee: Yamaha Corporation
    Inventor: Satoshi Usa
  • Patent number: 5272276
    Abstract: The electronic musical instrument, which is suitable for generating sustaining tone of a rubbed string instrument, has a manipulator for achieving performance manipulation in a linear manipulation region or in a plane manipulation region to simulate the motion of a bow of the rubbed string instrument, and a processing circuit for applying smoothing treatment to signals given by the manipulator. The musical tone generated by the electronic musical instrument can be prevented from being contaminated with discordant sound caused by noise produced in performance manipulation.
    Type: Grant
    Filed: January 11, 1991
    Date of Patent: December 21, 1993
    Assignee: Yamaha Corporation
    Inventors: Tetsuo Okamoto, Satoshi Usa, Itsuro Kubota