Patents Examined by Helen Kim
  • Patent number: 5333527
    Abstract: An improved acoustic guitar soundboard comprising a composite sheet formed of multiple layers of epoxy impregnated graphite fibers which have been accurately preimpregnated at about 33% resin to 67% fiber, after which they are layed up in laminates of unidirectional fibers with a woven graphite fiber fabric located as both top and bottom surfaces. The fiber orientation is preferably three to four times as many fibers in the longitudinal direction as in the latitudinal direction. The layups also are always equal and opposite in layered sequence so as to eliminate uneven stress. The sheet is cured in a heated platen press at uniform pressure and temperature. The soundboard may also have either standard wood bracing, rib-like bracing or no bracing at all. The waves applied in radial orientation enhance vibration, while orienting the waves into surrounds for individual sound plates tend to create individual resonance reservoirs for specific sound frequencies.
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: August 2, 1994
    Inventors: Richard Janes, William R. Cumpiano
  • Patent number: 5313014
    Abstract: An electronic musical instrument incorporates at least two tone signal outputs and controls sound image localization of musical tones in accordance with localization data by changing the levels of at least first and second tone signals provided, respectively, to the tone signal outputs. The instrument includes a tone signal generator for generating a generated tone signal and an output control data production circuit receiving the localization data and providing tone signal volume data and a selection signal. A tone signal output level control receives the generated tone signal and provides the first and second tone signals to the tone signal output. The tone signal output level control has a multiplier for altering the generated tone signal responsive to said volume data to provide one of the first and second tone signals. The tone signal output level control provides a signal corresponding to the generated tone signal unaltered by any multiplication as the other of the first and second tone signals.
    Type: Grant
    Filed: May 11, 1993
    Date of Patent: May 17, 1994
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventors: Taichi Kosugi, Takashi Suzuki
  • Patent number: 5301592
    Abstract: An improved bass drum foot pedal having a variable drive lever linkage with variable arc ratios connecting the foot pedal to the beater arm and having an electronic device actuator carried by a beater support member and adjustable to vary the impact force and strike point of the actuator, said actuator being operable with or without said pedal being attached to a drum.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: April 12, 1994
    Inventor: Darrell N. Johnston
  • 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: 5280742
    Abstract: A musical drum construction has a drum side wall comprising a relatively thin outer plastic shell or skin and a relatively thick inner foam plastic liner. The drum construction is of relatively light weight and is economical to manufacture. A fluctuating light source is provided in the drum to impart a glowing appearance to the drum exterior. Switch mechanisms on the drum respond to vibrational motion of the drum skin to control the light source, the light or lights going on and off at the frequency with which the drum skin is struck by a drumstick.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: January 25, 1994
    Inventor: Florentino S. Vergara
  • Patent number: 5278348
    Abstract: A device for use in an electronic musical instrument, in which data representing musical factors such as a tempo, a pitch and a timbre are changed at each repetition of an automatic performance, to thereby automatically effect variable automatic performances. Further, data representing a chord type and a chord root are input by a character-data input device such as a ten-key pad, and thus a chord input operation is facilitated, and moreover, a complicated finger manipulation becomes unnecessary. Furthermore, data representing chord types is input by at least one of the pitch input devices, and data representing chord roots is input by at least one of the other pitch input devices, and thus a chord performance is facilitated.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: January 11, 1994
    Assignee: Kawai Musical Inst. Mfg. Co., Ltd.
    Inventors: Shu Eitaki, Noriyuki Ueta, Noboru Akagawa
  • Patent number: 5274192
    Abstract: An instrument for recording and playing musical playing data comprises a pattern memory, a timing designation key for designating playing back timing of the pattern data, a sequence track for recording sequence data, and a writing device for writing the pattern data into the sequence track at the playing back timing designated with the timing designation key. The pattern data is read from the pattern memory and transferred to the place, in the sequence track, corresponding to the designated timing. The transferred note data is modified with the designated chord. The instrument further comprises a backing track storing backing data, any part of which can be also transferred to the sequence track.
    Type: Grant
    Filed: October 8, 1991
    Date of Patent: December 28, 1993
    Assignee: Yamaha Corporation
    Inventor: Tomoyuki Kumagai
  • Patent number: 5266735
    Abstract: An improved method and apparatus for learning to play a musical instrument retrieve a stored sequence of musical notes and other data from a source, and determine locations on the musical instrument corresponding to the sequential music data from the source, and then indicate to the user upon the musical instrument the locations thereon where the instrument should be engaged to produce the note or chord to be played in the sequence.
    Type: Grant
    Filed: December 2, 1992
    Date of Patent: November 30, 1993
    Assignee: John R. Shaffer
    Inventors: John R. Shaffer, Craig Bradley
  • Patent number: 5266737
    Abstract: A musical tone control apparatus controls an electronic musical instrument which simulates a natural musical instrument such as a bowed instrument. The apparatus includes an operator which can be movably operated in a predetermined direction and simulates a bow, a converter which stores a plurality of nonlinear characteristics. The nonlinear characteristics represent a relation between pressure signal which is added on the operator by a player and control pressure signal which simulates real rubbing pressure added on the string. To realize real performance by the bow, the converter converts the pressure signal into the control pressure signal to be changed in accordance with the position of the operator even if the pressure signal is constant.
    Type: Grant
    Filed: December 31, 1990
    Date of Patent: November 30, 1993
    Assignee: Yamaha Corporation
    Inventor: Tetsuo Okamoto
  • Patent number: 5262585
    Abstract: The cymbal system comprises a cymbal member mountable on a cymbal stand, the cymbal member having a playing feel approximating that of a conventional cymbal. A transducer is affixed to a surface of the cymbal member for translating any substantial percussive impact on the cymbal member to electrical signals. These electrical signals are converted into MIDI "note-on" messages serving as trigger messages. At least one conductive element is mounted on the cymbal member. A MIDI interface system is included which detects the alternation in an electrical signal between two stable states in response to a user's manipulation of the conductive element, each stable state representing a digital signal. The MIDI interface system also includes a software system for recognizing and then interpreting the digital signal into MIDI SYSEX messages, or note off and note on messages, serving as MIDI choke/send messages.
    Type: Grant
    Filed: March 17, 1992
    Date of Patent: November 16, 1993
    Assignee: Lenny Greene
    Inventors: Lenny Greene, Michael W. Smith
  • Patent number: 5260630
    Abstract: A numerical control apparatus for independently controlling the rotational velocity of a plurality of spindles. One or more spindles and one spindle rotational velocity are designated by NC data outputted by an NC data generating unit (1), the data in memories (3a-3n) corresponding to spindles designated by switching unit (2) is updated by the designated spindle rotational velocity, and motors (6a-6n) of corresponding spindles are controlled to rotate at the spindle rotational velocities stored in the memories (3a-3n).
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: November 9, 1993
    Assignee: Fanuc Ltd.
    Inventors: Takashi Iwagaya, Takashi Kurokawa
  • Patent number: 5254804
    Abstract: An electronic piano system provides an automatic performance piano capable of automatically carrying out pre-recorded performance, plus a key-return speed detecting unit and/or a string-striking speed presuming unit. When a depressed key is released so that a key is to be returned to its original position, a key-return speed is occurred, which is detected by the key-return speed detecting unit. On the other hand, when the key is depressed so that a hammer strikes a string in order to generate the corresponding sound, a string-striking speed of hammer is occurred. Based on a detected key-striking speed, the string-striking speed presuming unit presumes the corresponding string-striking speed. Thus, by use of the detected key-return speed and/or presumed string-striking speed, the automatic performance can be carried out with high fidelity.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: October 19, 1993
    Assignee: Yamaha Corporation
    Inventors: Takashi Tamaki, Yasutoshi Kaneko
  • Patent number: 5245128
    Abstract: A controller for a musical effects unit enables control of an effects unit through the use of two touch buttons mounted on a guitar, or other instrument. The two touch switches form an input to a microprocessor utilizing control software to interpret the sequential contacting of the buttons. The software converts the sequential manipulation of the buttons into a selection criteria which is then transmitted to the effects unit to effect the selection of a pre-programmed or pre-selected effect. The timing of the sequencing of the two touch, or momentary switches may be adjusted in the software to suit the needs of the individual preforming artist.
    Type: Grant
    Filed: January 3, 1992
    Date of Patent: September 14, 1993
    Inventor: Steven P. Araiza
  • Patent number: 5237123
    Abstract: In order to obtain speed and position information about a moving component of a musical instrument a fin extending in the direction of travel of the moving component is coupled thereto as, for example, by affixing the fin to the hammer shank of a piano. The fin carries indicia, such as a bar code, which can be read, for example, by an optical or magnetic sensor assembly. In one embodiment, a pair of side-by-side indicia bands are carried on the fin with the bands slightly offset in the direction of travel in order that direction, as well as speed and position information can be obtained. The gathered data may include information recorded, for example, for all the notes and the pedals of a piano in order that a performance may be reconstructed and played back employing a solenoid stack or the like.
    Type: Grant
    Filed: February 6, 1991
    Date of Patent: August 17, 1993
    Assignee: Laurence G. Broadmoore
    Inventor: James M. Miller
  • Patent number: 5223657
    Abstract: A musical tone generating device is capable of simulating various special playing techniques for a stringed instrument in which the harmonic spectrums of produced sound is enhanced, or otherwise altered. The device includes a delay circuit wherein an input signal thereto is delayed and output; a closed loop circuit comprising multiple feedback pathways to which the output of the delay circuit is supplied and processed therein, after which the processed signal is returned toward the delay circuit as an input signal; an excitation device in response to a predetermined control signal, generating an excitation signal and supplying it to the closed loop circuit, such that the excitation signal corresponds to an excitation vibration in the stringed instrument being simulated; and a control device wherein the predetermined control signal is generated and whereby the delay interval of the delay circuit and the processing carried out in the multiple feedback pathways are controlled.
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: June 29, 1993
    Assignee: Yamaha Corporation
    Inventor: Chifumi Takeuchi
  • Patent number: 5221804
    Abstract: A tone generation device for an electronic musical instrument capable of producing multiple tone source effects such as a stereophonic effect and a reverberation effect includes a plurality of tone forming circuits, a control parameter generation circuit for generating control parameter for controlling outputs of the tone forming circuits, a plurality of tone synthesizing circuits for synthesizing outputs of some of the tone forming circuits and outputs of others of the tone forming circuits together in accordance with the control parameters supplied from thge control parameter generation circuit, and sound systems provided in correspondence to the respective tone synthesizing circuits.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: June 22, 1993
    Assignee: Yamaha Corporation
    Inventor: Takeo Shibukawa
  • Patent number: 5220117
    Abstract: An electronic musical instrument, which is configured to simulate one or more instruments, provides a sound source, a display unit and a control portion. Herein, under control of the control portion, the display unit displays the predetermined graphic pattern corresponding to the tone-generation mechanism, i.e., tone-generation algorithm of an instrument to be simulated. The sound source contains a drive portion, a tone-generation portion and a resonance-radiation portion, each of which further contains a digital signal processor (DSP). All of these portions function to create a digitized musical tone signal corresponding to a simulated sound of the instrument by combining operation data outputted from the DSPs. By controlling the display unit, it is possible to arbitrarily vary the contents of the displayed tone-generation algorithm, so that the performer can easily and freely perform a music on this electronic musical instrument.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: June 15, 1993
    Assignee: Yamaha Corporation
    Inventors: Hideo Yamada, Masahiro Shimizu
  • Patent number: 5220121
    Abstract: A melody supplement control apparatus is disclosed wherein supplementary tones for melody tones are produced according to predetermined rules, and the degree of the addition of the aforesaid supplementary tones to the aforesaid melody tones is determined based on the pitch of the said supplementary tones.
    Type: Grant
    Filed: May 30, 1990
    Date of Patent: June 15, 1993
    Assignee: Yamaha Corporation
    Inventor: Susumu Kawashima
  • Patent number: 5214993
    Abstract: In an electronic musical instrument for automatically a adding duet note, an apparatus, which can reduce the capacity of a memory for storing data used as a basis for selecting a duet note to be added, is disclosed. A chord depressed at a keyboard is specified by a chord specifying means, and a depressed melody note (highest note) is detected by a note detection device. According to these notes, duet note data, which can be added, is read out from a chord-notes weighting information storage area on the basis of chord constituting notes, and another duet note data, which can be added, is read out from a note weighting information storage area according to a relative note data of the highest note relative to the root note of the chord. These readout duet note data are subjected to a calculation, thus selecting a duet note. Therefore, duet note data corresponding in numbers to chords and relative notes need only be stored in the memory, thus reducing the capacity of the duet note data memory.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: June 1, 1993
    Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
    Inventor: Shinya Konishi
  • Patent number: 5214232
    Abstract: An electric guitar has a plurality of strings stretched over a rigid body and a neck, and a vibration detecting unit embedded into the rigid body, and the vibration detecting unit has a plurality of photo emitting elements paired with a plurality of photo detecting elements spaced apart from the associated photo emitting diodes in directions parallel to the associated strings, wherein the photo emitting elements radiate light spots toward the associated strings for causing the reflections to be fallen upon the associated photo detecting elements so that the photo detecting elements produces photo currents without any diffraction of light.
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: May 25, 1993
    Assignee: Yamaha Corporation
    Inventors: Kenzaburo Iijima, Katsufumi Kondo