Abstract: In controlling a sound source for an electronic musical instrument, an operation data of a performance operation member corresponding to musical tone control parameters of a musical instrument is corrected according to a tone generation region characteristic of the musical instrument. The corrected data is inputted to a sound source circuit of the electronic musical instrument thereby a musical tone approximating of the musical instrument is regularly generated.

Abstract: A musical tone synthesizing apparatus simulating a wind instrument includes an excitation circuit simulating a reed operation of a mouth piece portion, a resonance circuit simulating a resonance tube and a musical tone control circuit. The excitation circuit produces an excitation signal based on an input signal and a reflected wave signal transmitted from the resonance circuit. The excitation signal is input to the resonance circuit. The resonance circuit includes a bi-directional transmission circuit and a junction unit which is inserted into the bi-directional transmission circuit. The junction unit caries out a scattering operation corresponding to a scattering operation of compression wave of air which is occurred in the vicinity of the tone hole of the resonance tube. The excitation signal propagates through the bi-directional transmission circuit in a forward direction as a progressive wave signal.

Abstract: A musical tone synthesizing apparatus generates musical tones by simulating the tone generation construction of a plucked-stringed instrument or string-striking type stringed instrument. The apparatus has a closed-loop circuit which simulate a tone generating element of the instrument, an excitation circuit which creates an excitation signal corresponding to the excitation given to the tone generating element in response to the time function. The time function is set in response to operational information of the tone generating operator. The excitation signal is supplied to the closed-loop circuit and circulates around closed-loop circuit and is delayed by a delay circuit having delay interval, and is fed back into the excitation circuit as the state of the tone generating element.

Abstract: An electronic musical instrument having a function of simultaneously generating musical tones of a plural tone color comprises a tone color designating device for designating a plurality of tone colors, and a balance decision device for deciding balance of tone volume between the tones of tone colors designated by the tone color designating device, according to the order specified thereby. After the tone colors are designated, when musical tone generation is specified by a keyboard or the like, the musical tones of the tone colors are generated according to the previously decided balance of tone volume.

Abstract: An electronic musical instrument can execute a musical performance with two timbres mixed together by operating a single key, for example. Of the two timbres, a master timbre is set in normal mode and is stored in a first memory, while a slave timbre is selected in tone mix mode and is stored in a second memory. Each timbre can be altered as desired. To alter the master timbre, timbre switches are operated after the mode is temporarily changed to normal mode. To alter the slave timbre, the timbre switches are operated in tone mix mode. When the tone mix mode is set, this electronic musical instrument can permit a player to easily alter tone parameters such as the volume, pitch and attack delay time of each timbre.

Abstract: When analog signals of two or more channels are converted to digital signals, a differential signal of at least two of these channels (A and B) is taken out. The signal of either channel A or B or the sum signal of these signals and the above-mentioned differential signal are quantized by binary-coding with n and m bits (n>m), respectively. The quantization is also performed by sampling with the sampling frequency f1 and f2 (f1>f2). As a result the memory capacity is saved and the transmission speed is improved.

Abstract: A step-recording apparatus for an automatic music-performing system comprises a timber generating member, a control member, a function key block, a melody key block, and memories and a method thereof comprising the steps of setting an address of a memory for storing step-recording data, if a key signal for performing a step-recording mode routine is inputted in the courser of performing of a main routine, setting a reference resolution value of a selected melody chord, increasing or decreasing the reference resolution value by a predetermined number of times, or maintaining the reference resolution value naturally, scanning the key signals corresponding to a function and the melody chord, identifying the melody chord and a play mode from the scanned key signals and then producing a desired format of the step-recording data corresponding to the identified melody chord and play mode, and storing the step-recording data into the memory, increasing the address of the memory by a predetermined unit and then return

Abstract: An electronic musical instrument comprises a tone generator for generating a plurality of different digital waveform signals corresponding to different timbres, and a device for setting a plurality of ranges defined by two parameters, a first one of the parameters being a pitch parameter and a second one of the parameters being a key touch parameter. The parameters vary according to the musical performance, and a range for the pitch parameter in combination with a range for the key touch parameter respectively designating one of the plurality of different digital waveform signals having different timbres. An input device is provided for inputting the two parameters according to a musical performance.

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.

Abstract: A musical sound synthesizing apparatus which simulates a sound generating mechanism of a string instrument by using an electronic circuit comprises a driver for applying data, an adder, a delay unit for storing data temporarily, a low pass filter for processing data, and a word length designating unit for designating a word length (address width) of the delay unit. The adder, delay unit and low pass filter form a loop-shaped circuit, with their corresponding input ends and output ends connected with each other. The word length designating unit corrects a word length of the delay unit in accordance with a phase delay of the low pass filter or in accordance with the number of stages of the pipeline structure of the loop. In the case where a musical sound of the type generated by touching or hitting strings is synthesized, the driver reads at least two series of data stored beforehand and applies the read data to one of the inputs to the adder.

Abstract: An information processing apparatus includes: a unit for displaying on a screen a musical score, keyboard and tone time information to be inputted; a unit for designating the position of the keyboard, and tone time information, respectively displayed on the display unit; a unit for storing musical information produced through designation by the designating unit of the position of the keyboard and tone time information displayed on the display unit; a unit for controlling the display of the musical score, keyboard and tone time information on the screen of the display unit, and for controlling the display of a pattern of musical tone or rest on the musical score on the display unit in accordance with the position of the keyboard and tone time information respectively designated by the designating unit; and a unit for generating a musical tone by reading the musical information stored in the storage unit.

Abstract: A filter calculating section has a plurality of basic filters formed on a time-divisional basis. The timbre of a musical tone signal is controlled by a memory section, an accumulator, a selector, an I/O assign section and a control section using the basic filters formed by the filter calculating section. A digital filter coefficient stored in a digital filter coefficient memory is read out using integer data output from a cutoff controller as an address. An interpolation circuit interpolates this digital filter coefficient on the basis of fraction data output from the cutoff controller. Based on the interpolated digital filter coefficient, the timbre of a musical tone signal is controlled.

Abstract: Audio data of a predetermined piece of music is recorded on a compact disc. A sequence of musical tone data is stored in an auto-play memory. Also stored in this auto-play memory are a time control command, an access command and a play command. An instrument controller reads out these commands to surely control the auto-playing and reproduction of data from the compact disc in synchronism.

Abstract: A music emulator for emulating guitar sounds uses non-guitar like devices, as for instance a piano style keyboard, for input. Input from the keyboard within a time window is defined as simultaneous and entered into a note list. A signal is derived from the note list indicative of the chord played on the keyboard. In addition, notes in the note list can be extended to form a full chord whereby as few as three notes constituting a chord input at the keyboard are extended to a greater number of notes as, for instance, the six strings of a guitar. This signal is then outputted at a time rate which is extended with respect to the input time window whereby the output emulates a guitar strum including an arpeggiation or strumming effect of a guitar like sound. Chord extension is achieved by analyzing the notes in the note list as to their pitch and generating further notes which are outside the typical one octave range of a keyboard chord and extend to the typical four octave window of a guitar.

Abstract: A tone generation control unit has four waveform read/write channels for selectively the reading or writing data in a waveform memory. A plurality of waveform signals stored in the waveform memory are converted into analog signals to be subjected to timbre and tone volume control through voltage-controlled filters and voltage-controlled amplifiers before being fed to a mixing adder. An output signal of the mixing adder is converted into a digital signal which is stored in the waveform memory again through processing of the tone generation control unit. The stored converted output from the mixing adder is later used again as a new sound source waveform which is operated on to produce tones.

Abstract: A waveform signal converting apparatus is designed to convert each of instantaneous values of an input waveform signal in accordance with desirable one of plural data conversion functions. Herein, one of plural data conversion functions is selected in response to comparison result of a comparator which compares each of instantaneous values to the reference value. This reference value can be varied in response to the comparison result of comparator and/or a varying tendency of the instantaneous values of the input waveform signal to be increased or decreased. Preferably, there is provided a memory (e.g., ROM) which pre-stores at least one data conversion table for converting the input waveform signal.

Abstract: A musical tone synthesizing apparatus is disclosed wherein an excitation signal corresponding to performance data is generated and supplied to a loop circuit. In the loop circuit, this excitation signal is delayed for at least a fixed time period and a repeatedly circulating muscial tone signal is generated. At the beginning of the generation of this musical tone signal, a initial signal with a frequency which corresponds to the pitch of the generated musical tone is supplied. As a result of this, in the loop circuit, resonant operation is carried out quickly in accordance with the initial signal.

Abstract: An electronic musical instrument is disclosed in which the selection of timbre and rhythm contol functions is simplified, and the number of function switches and control panel surface area can be limited, even when the instrument has a large number of available timbre and rhythm control functions. The invention provides an electronic musical instrument employing various types of musical tone control data which are divided into groups. Additionally, the invention provides an input device which includes a plurality of switches, each switch corresponding to one of the above described groups of musical tone control data. The input device is capable of detecting the operation of the above mentioned switches.

Abstract: The tonality of scale of electronic musical instrument is set by setting a standard sound pitch (sound pitch of "do"). When a tone color is selected, this setting is automatically performed according to this tone color. In the case when the tone color is similar to that of natural musical instrument, setting is executed so that the tonality of pertinent musical instrument is set.

Abstract: The position of a connecting portion between waveforms can be arbitrarily set when a plurality of waveform data is obtained by changing pitch widths of stored external sound waveform data, when a read rate of the waveform data is increased or decreased and the readout waveform data is synthesized, or when the waveform is changed from one waveform to another waveform. In addition, a plurality of loop reproduction cycles can be arbitrarily set when the waveform data is to be read out. In loop reproduction, two items of waveform data having different phases between the preset start and end addresses can be repeatedly read out and synthesized, and their mixing ratios can be changed as a function of time, thereby performing loop reproduction so as not to abruptly change amplitude values of the waveforms.

Abstract: An electronic stringed instrument employs a plurality of sensors or monitors for instrument performance. Preferred sensors or monitors include a detector for detecting that a string of the instrument is vibrated, an apparatus for evaluating a string-vibration strength or a string touch, an apparatus for discriminating a fret operation position on a fingerboard or a fundamental frequency of a vibration of the vibrated string, a tremolo arm sensor, and a string-bending sensor. These performance input parameters are assigned to various control functions for musical tones generated by a sound source and/or various control functions for effects added to these musical tones by an effector. The function assignment is preferably programmable. In an operation, a music control apparatus controls the sound source and/or effector in response to a performance monitor so that musical tones for the strings can be distinguished from each other or effects for the musical tones can be distinguished from each other.

Abstract: A musical tone generator includes first and second tone generator units respectively having a plurality of musical tone generation channels, a designating device for designating tone colors of musical tones, and a CPU for enabling respective tone generation channels to be selectively assigned with different tone colors. The usage of the plural tone generator units is also controlled by discriminating whether or not the input performance data can be processed by the first tone generator unit. When the CPU determines that the input performance data can be processed by the first tone generator unit, it controls musical tone production in the first tone generator unit based on the performance data. When the CPU determines that the input performance data cannot be processed by the first tone generator unit, it controls musical tone production in the second tone generator unit based on the performance data.

Abstract: A system and method for translating MIDI files is used with a sequencer and synthesizer. When a MIDI file is imported into a system, the file is scanned and voice assignment information extracted. This information is stored in a converted file. If desired, the extracted information can be stored using MIDI system exclusives. This allows either any original program change information, or the extracted information, to be used during a performance of the converted MIDI file.

Abstract: When picking of a string is performed, the vibration of the string is detected accurately and quickly. When a fret operation position is changed during generation of a musical tone caused by the string picking, the pitch of the musical tone is changed to the one corresponding to the new fret operation position without generating a new musical tone. When the same string is stroked successively, the succeeding musical tone is generated while keeping the reverberation of the previous musical tone. The musical tone once generated will be stopped from being generated upon elapse of a predetermined time from the beginning of the tone generation, irrespective of the type of its timbre. When a fret operation state is changed to an open-string operation state after the string picking, the generation of the musical tone being generated stops at that timing.

Abstract: The musical tone synthesizing apparatus simulating the wind instrument synthesizes a musical tone signal to thereby generate a musical tone corresponding to the wind instrument tone. Herein, the musical tone synthesizing apparatus contains one or more stages each including a bi-directional transmission circuit and a junction. In each stage, the progressive wave signal is delayed by the predetermined delay time and transmitted to the junction. The junction multiplies the signal by first coefficient, whereby the result of multiplication is transmitted to the next stage. The junction also multiplies the progressive wave signal by second coefficient, whereby the result of multiplication is fed back to the prior stage. The first and second coefficients are changed over according to an operation of a tone hole to be provided in the wind instrument. Thus, the musical tone of the wind instrument can be simulated with simple circuit or software.

Abstract: The musical tone generating apparatus includes at least a waveform memory for storing waveform data, a stereophonic effect giving portion, left and right sound systems. The stereophonic effect giving portion gives stereophonic effect to the waveform data read from the waveform memory so that the left and right sound systems can generate left and right musical tones respectively based on the same waveform data outputted from the stereophonic effect giving portion. This stereophonic effect giving portion includes at least one digital filter whose filter coefficient can be adequately selected. This digital filter filters out the waveform data, and then the filtered waveform data are supplied to one of the left and right sound systems so that frequency characteristic of the left musical tone will be different from that of the right musical tone. Meanwhile, two digital filters can be provided at both inputs of the left and right sound systems.

Abstract: An electronic musical instrument shaped like an electric guitar sounds individual notes that are synthesized to sound like an electric guitar. These notes may either be selected randomly selected by a player or from segments of prearranged musical tracks. The instrument provides for maintaining the tempo of manually played or preprogrammed notes, synchronizing the transitions between sequentially selected musical tracks, overlaying manual notes on the tracks, and a number of electric guitar-like sound effects including vibrato, chorus, overdrive, slurs and soft picks.

Abstract: When picking of a string is performed, the vibration of the string is detected accurately and quickly. When a fret operation position is changed during generation of a musical tone caused by the string picking, the pitch of the musical tone is changed to the one corresponding to the new fret operation position without generating a new musical tone. When the same string is stroked successively, the succeeding musical tone is generated while keeping the reverberation of the previous musical tone. The musical tone once generated will be stopped from being generated upon elapse of a predetermined time from the beginning of the tone generation, irrespective of the type of its timbre. When a fret operation state is changed to an open-string operation state after the string picking, the generation of the musical tone being generated stops at that timing.

Abstract: The position of a connecting portion between waveforms can be arbitrarily set when a plurality of waveform data is obtained by changing pitch widths of stored external sound waveform data, when a read rate of the waveform data is increased or decreased and the readout waveform data is synthesized, or when the waveform is changed from one waveform to another waveform. In addition, a plurality of loop reproduction cycles can be arbitrarily set when the waveform data is to be read out. In loop reproduction, two items of waveform data having different phases between the preset start and end addresses can be repeatedly read out and synthesized, and their mixing ratios can be changed as a function of time, thereby performing loop reproduction so as not to abruptly change amplitude values of the waveforms.

Abstract: The present invention provides an apparatus for generating musical sound control parameters. The musical sound control parameters are supplied to a musical sound generating apparatus for using them to generate musical sound by the musical sound generating apparatus. The apparatus is essentially composed of (a) timbre selecting operators; (b) timbre parameter generators for supplying timbre parameters corresponding to timbre selected by the timbre selecting operators to said music sound generating apparatus (c) effect control operators; and (d) effect control parameter generators for supplying plural effect control parameters varying in response to the timber selected by said timbre selecting operators and also varying in response to the operating situation of the effect control operators.

Abstract: A musical-tone-signal-generating apparatus which determines the current tone-color-designation state on the basis of the operation of one or more tone-color-selection switches, reads from a memory tone-color-control information that specifies the tone colors corresponding to the current tone-color-designation state, and controls the generation of musical-tone signals on the basis of the tone-color-control information. The tone-color-control information includes various data necessary for generating one or more tone colors selected by the tone-color-selection switches. Thus, the apparatus can generate a plurality of tone colors simultaneously with a simple configuration.

Abstract: A waveform data looping system has waveform data sampled for a predetermined time period and stored in a first memory. Data read-out is started at a looping start point in the time period and, after a readout at an end point is completed, the readout is again started at the starting point, repeatedly. The system includes a processing device for dividing the data stored in the first memory into two sections at an intermedial point of the predetermined time period, multiplying the data in the preceding section such that a data value at the start point is 0% and that at the intermedial point is 100% and that between the start and the intermedial points varies between 0% and 100% and the data in the subsequent section such that the data at the intermedial is 100% and that at the end point is 0% and that between the intermedial and end points varies between 100% and 0%, and adding the multiplied preceding data section and the multiplied subsequent data section.

Abstract: An electronic musical instrument includes a first tone generator for generating a musical tone in response to each depression of key on an accompaniment keyboard and a second tone generator for generating a musical tone in accordance with the musical performance data read from the memory. In a specific mode, the player can cause the first tone generator to generate a musical tone through the accompaniment keyboard with the accompaniment being automatically played. In a mode for recording an accompaniment of a music into the memory in a step manner, a chord is detected from keys depressed on the accompaniment keyboard, and data representative of the detected chord is written into the memory together with data representative of a note-length designated by note-length selection switches. In a mode for recording an accompaniment in real time, each time keys are depressed, the chord data of the depressed keys is written into the memory together with the contents of a tempo clock counter.

Abstract: An electronic tone generator in which a plurality of types of scale data and tone-length data are stored in an associative arrangement at predetermined addresses in a single storage device. The plurality of types of scale data read from the single storage device are input to corresponding waveform generators, where melody-waveform signals are generated. The melody-waveform signals generated in the respective waveform generators are mixed and synthesized by a mixer before being output from an output device. The waveform generators are adapted to switch envelope waveforms generated by envelope-waveform generators of a digital circuit configuration with waveform signals corresponding to the scale data, thereby obtaining melody-waveform signals.

Abstract: Disclosed is a musical tone signal generating apparatus for an electronic musical instrument. When waveforms are switched to change a tone color in correspondence with a change in pitch, waveforms are switched not simultaneously with a change in pitch but when waveform data corresponding to a loop end address is read out, and a peak value of the waveform falls within a predetermined range or a zero-crossing point is detected, thereby smoothly switching waveforms. The pitch is also changed at the above-mentioned timing to prevent generation of an unnecessary tone color upon switching. Furthermore, waveforms are switched by cross-fade control to more smoothly switch output waveforms.

Abstract: A recording media playing apparatus including tonal response control circuit configured to control the tone of reproduced sounds, by controlling signal levels of frequency components in a plurality of frequency bands, which are set to divide the frequency range of audio signals read out from the recording media, to designated variation ratios.

Abstract: An electronic musical instrument includes a converting device for converting performance information into musical tone control data to generate a musical tone based on conversion data, a storage device for storing the performance information, and an analyzing device for analyzing the performance information to convert the conversion data into adjusted musical tone control data. Accordingly, the performance information is converted into the adjusted musical tone control data based on the conversion data, so that the adjusted musical tone control data automatically generates a suitable magnitude of volume for every player.

Abstract: A preselector for a musical instrument includes a memory that stores data for controlling sound parameters emitted by the musical instrument when read from memory in response to actuation of a finger or pedal bar switch. For each independent parameter to be controlled, there is a set of lighted momentary push-button switches that determines the magnitude of that parameter. These values are written into the memory during a first mode at an address determined by the number of depressions of any actuating bar, such as a finger bar or toe bar. The lights behind the switches indicate the magnitude of the parameter. Alternatively, a variable potential converted to a digital signal by an analog-to-digital converter can be used to define the magnitude of the parameter. Just before performance after the values of all the parameters have been written into the memory in the sequence in which they are to be used, an address counter is reset to its initial value.

Abstract: An electronic musical instrument can execute a musical performance with two timbres mixed together by operating a single key, for example. Of the two timbres, a master timbre is set in normal mode and is stored in a first memory, while a slave timbre is selected in tone mix mode and is stored in a second memory. Each timbre can be altered as desired. To alter the master timbre, timbre switches are operated after the mode is temporarily changed to normal mode. To alter the slave timbre, the timbre switches are operated in tone mix mode. When the tone mix mode is set, this electronic musical instrument can permit a player to easily alter tone parameters such as the volume, pitch and attack delay time of each timbre.

Abstract: An electronic material instrument includes a tone generator for synthesizing tones by using a number of time-division multiplexed (TDM) modules, an input unit for programming a connection configuration (tone synthesis algorithm) for the modules of each module pair, and a processing unit for converting the input program into control data for each module and transferring the control data to the tone generator. In one embodiment, each module pair is selectively operative in an addition mode, a phase mode or a ring modulation mode, independently of the modes selected for the other module pairs. It is thus possible to attain a tone synthesis desired by the user, and to make the best use of the capacity of the tone generator.

Abstract: A plurality of waveforms are time-divisionally obtained from a waveform generator in one sampling period under the control of a controller. The sampling period is equally divided into a plurality of module periods. Each module period is also divided to correspond to the number of waves which are obtained time-divisionally. The waveform generator includes a selector which uses waveform data produced in a preceding module in the sampling period as that for waveform generation in the following module.

Abstract: A musical tone generating apparatus includes a position information generating device to generate musical instrument position information (PS) as plane coordinates values. This information (PS) is stored in a memory device, or selectively determined by a manual operation. The apparatus also includes an information converting device to convert information (PS) into musical tone parameter control information (PD). This control information (PD) controls musical tone source signals (S11, S12, and S13) to generate a sound field corresponding to the position of musical instruments arranged on a stage.This enables an operator to verify the musical instrument positions on a stage, thereby providing a feeling of being at a live performance.

Abstract: An electronic musical instrument having a keyboard, includes a plurality of keys, a plurality of musical tone signal generation systems, a touch detector for producing touch data representing a key touch accompanied by a key depression, a panel operation unit for setting a touch sensitivity representing a sensitivity with respect to a key touch for each of the musical tone signal generation systems, and a register unit for modifying the touch data in accordance with the touch sensitivity corresponding to each of the musical tone signal generation systems. Different tone groups are assigned to the musical tone signal generation systems, and a musical tone signal which has a tone color belonging to the corresponding musical tone group and a pitch corresponding to a key depression is produced from each of the musical tone signal generation systems. Each musical tone group includes at least two tone colors having a common attribute.

Abstract: A sound field control device is capable of producing a sound field effect tone which has a tonal effect providing a listener with a feeling of presence and includes a sound field effect tone generation circuit for generating a sound field effect tone on the basis of sound field information supplied from a source. The sound field effect tone is sounded simultaneously with reproduction of the source signal and a reproduced sound field produced on the basis of the source signal is controlled by this sound field effect tone. In one aspect of the invention, the sound field effect tone generation circuit includes a convolution operation circuit which subjects a signal derived from left and right signals from the source signal to convolution operation with sound field data derived on the basis of the sound field information from the source signal.

Abstract: A sound source package having a sound generation circuit and a memory storing a timbre editing program used for editing the timbre parameters can be connected to an electronic musical instrument. The electronic musical instrument reads out the timbre editing program from the sound source package. A user can edit the timbre of the musical sound to be generated from the sound source package by operating operation switches of the electronic musical instrument in accordance with the timbre editing program supplied from the sound source package.

Abstract: An electronic musical instrument extracts a pitch from an input waveform signal by a pitch extracting circuit, and directs a sound source circuit to generate a musical tone at the pitch based on the extracted pitch. The sound source circuit electronically generates musical tones at the pitches according to the performance. The pitch extracting circuit obtains fundamental period of the input waveform signal by detecting the time interval (t1) between these first two zero-cross points after two positive peak points of the input waveform signal are detected, by detecting a time interval (t2) between first two zero-cross points after two negative peak points of the input signal waveform are detected, or by detecting both the time intervals (t1, t2).

Abstract: Waveform data is read out from a memory which stores the waveform data at a rate corresponding to a designated pitch. The readout data is supplied to digital filters, and two or more different filtering operations are executed in the digital filters. Two or more waveform data obtained as a filtering result are synthesized at a rate determined in response to a breath input signal output from a breath sensor, and the synthesized data is output as a musical tone waveform signal. The filter performs the filtering operation while a cut-off frequency is changed in response to the breath input signal.

Abstract: During percussion performance, percussion data corresponding to states of percussion sequentially detected by percussion-detection section and tone pitch data corresponding to the sequentially struck percussion members are stored. The stored percussion data and tone pitch data are sequentially read out to generate musical tones, each having a tone pitch corresponding to the tone pitch data, in accordance with the percussion data. Parameters of musical tones to be generated or being generated are controlled in accordance with instructions of a parameter indication section provided on a striking member.

Abstract: A musical tone control apparatus comprises a main unit and at least one detector for detecting movement of player's finger, hand and the like. The main unit can be mounted on a player's wrist by use of a belt. When plural detectors are provided for detecting movements of player's fingers, tone color, tone pitch of musical tone or key-on timing is controlled based on combination of bent fingers. In order to detect bending of each finger, a joint switch is provided for each finger. In order to prevent deviation of key-on signals, a comparator is further used for comparing the predetermined threshold value with detection value corresponding to the bending of each finger so that the key-on signal is generated when the detection value exceeds the threshold value.

Abstract: An electronic musical instrument includes a plurality of address generators for producing address signals corresponding to different tones each varying at a rate synchronous with the frequency of each of the different tones, a waveform memory device including a plurality of addresses for storing at respective addresses a plurality of waveform sample values that constitute a waveform, a circuit for sequentially supplying one after another of the address signals to the waveform memory device to read out the waveform in different rates in a time division multiplexed manner for different tones, and musical tone forming circuits for forming musical tones in accordance with the time division multiplexed waveform outputs of the waveform memory device.