Abstract: An electronic musical instrument is disclosed wherein the musical tone parameter such as the tone volume, tone color, acoustic reverberation, pan-pot and the like can be varied over time. The invention provides an electronic musical instrument including an operational device, a memory, a readout section, a control section and a tone generator. The operational device can be implemented in a stick type operator for example. The operational device generates operational data which vary over time in response to operations applied thereto. The operational data generated by operational device are consecutively stored in the memory. The readout section can be implemented in a CPU for example and consecutively reads out the operational data from the memory. The control section can be implemented in a CPU for example and generates a musical tone parameter which varies over time on the basis of data consecutively read out from the memory.

Abstract: A key assigner, for an electronic musical instrument that has a plurality of oscillators and that employs for the production of a specific timbre only the number of oscillators that is actually required. The key assigner comprises a control for, upon reception of a tone-ON command, assigning timbre generation to the oscillators by control unit, each of which includes the maximum number of oscillators required for timbre generation. Once timbre generation assignments to all the control units have been effected, and a tone-ON command for a timbre that requires fewer oscillators than compose each of the control units is received, the key assignor assigns the timbre generation to an oscillator, of one of the control units, to which timbre generation assignment has not previously been made.

Abstract: An electronic musical instrument, which, in consonance with the state of a local control function, is designed to play music independently or in conjunction with an external device, includes a detector for detecting a depression of a predetermined operation terminal immediately after power switch-on. It further includes an initial setup device for setting the initial state of the local control function in accordance with the data acquired by the detector.

Abstract: An electronic musical instrument has a keyboard and a sound source circuit for manual performance along with automatic accompaniment. A memory is provided for memorizing a plurality of rhythm patterns of the automatic accompaniment such as introduction, normal, fill-in and ending. The memory further stores timbre codes corresponding to the respective rhythm patterns, effective to specify tone color of the manual performance. Selecting switches are manually operated during the manual performance for selecting a desired rhythm pattern. A CPU accesses the memory to retrieve the selected rhythm pattern so as to switch the automatic accompaniment to the selected rhythm pattern. The CPU concurrently controls the sound source circuit to change the tone color of the manual performance according to a particular timbre code associated to the selected rhythm pattern.

Abstract: A computer music playing system of the invention permits setting parameters before playing, sound generation control, musical interval control, and special control during playing by merely operating a hand held type position input device. System operability is good, use efficiency is improved, and the computer can be used even if the user does not know music playing technique and musical theory. A hand held type position input device is provided, and by operating the hand held position input device, various selections and various settings in software are executed. The band members can be set, the playing style can be changed by a combination of the setting of the band members and the selection of the music to be played. The operator of the hand held position input device can participate as a member of the band.

Abstract: A sound processing system comprises a waveform distributor for distributing an input sound waveform, offset devices for executing an offset process for each of the waveforms received from the waveform distribution device, and a multiplication and addition device for multiplying the offset waveforms by predetermined coefficients and then adding the multiplied waveforms. Since the distributed waveforms are offset by the independent offset devices, highly varied sound can be produced by changing the coefficients of the offset devices and the multiplication and addition device, and also by changing these coefficients as time elapses.

Abstract: A MIDI Controller has the capability to automatically randomize, on multiple MIDI channels, four key elements of sound, namely timbre, pitch, volume, and dynamic response, to produce new total sounds. The MIDI Controller includes a user configurable randomizer which can selectively randomize the four key sound elements through processor operators. The randomizer includes a random number generator, the output of which is selectively truncated depending upon the particular element being randomized.

Abstract: An apparatus for forming musical tone signals includes a playing operator and a tone signal synthesizing section for simulating a natural musical instrument, wherein a part of the tone signal synthesizing section, that is a part selectable for tone synthesization with respect to a plurality of tones is provided as connectable from external, and wherein storage means for storing procedure and parameters for synthesizing a musical tone signal is further provided as connectable from external.

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: An automatic playing apparatus which reads tone information from a ROM piece by piece to play a demonstration. The tone information stored in the ROM includes note data for generation of a musical tone as well as data for changing the parameters of music corresponding to the note data. When a demonstration is played, the note data and the data for changing the music parameters stored in the ROM are read out piece by piece, and the associated musical tones are generated accordingly. In this way, the musical piece being automatically played changes with each repetition, so that listeners hear a different version of the piece each time it is re-played.

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.

Abstract: A musical tone generating apparatus, to be applied to an electronic musical instrument, provides at least a plurality of channels and a tone-color memory. Each channel contains one tone generator and two or more buffers. The number of the buffers provided in a plurality of channels is set smaller than the number of tone colors stored in the tone-color memory. Each of the buffers stores one tone color, so that the tone generator creates a musical tone signal responsive to the tone color stored in the buffer in accordance with musical tone information given from an external device such as a keyboard. The tone colors to be used in a tune to be performed can be freely assigned to the buffers in advance. Herein, all of the buffers are classified into two or more groups in accordance with a buffer-grouping priority, so that in a plurality of channels, when a musical-tone generation is assigned to a channel, one buffer given a higher priority is selected prior to another buffer.

Abstract: A musical tone generation apparatus is provided with a plurality of tone generation channels, a first memory for storing musical tone parameter including tone color specifying parameter, i.e., tone color name or number of tone color, in units of the tone generation channels, and a second memory for storing tone color parameter data. When tone color change is designated, the first parameter memory outputs tone color specifying parameter to the second parameter memory. In response to this, the second memory outputs the changed tone color parameter data to the tone generation channels to thereby generate tone having new tone color. As a result, tone color change is easily performed.

Abstract: In an apparatus capable of generating a tone by a plurality of different tone generation processing modes, the respective tone generation processing modes are arbitrarily assigned in units of tone generation channels so as to efficiently utilize the tone generation channels. In particular, as one of the tone generation processing modes, a waveform readout processing such as a PCM method is used. As another processing mode, a tone generation processing mode for converting an output obtained by mixing a modulation signal in a carrier signal at an arbitrary ratio in accordance with a predetermined functional relationship to generate a tone signal is used. In this mode, when the mixing ratio is set to be a predetermined value, the tone signal has a sine or cosine wave. Various tones such as a tone including a single sine or cosine wave component, a tone including harmonic components of high orders, and the like can be widely synthesized, and can be desirably assigned to the tone generation channels.

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.

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.

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.

Abstract: A loop circuit including a delay element and an all-pass filter circulates a tone signal. A driving waveform is applied to the loop circuit. The delay element provides a delay time corresponding to the pitch of the circulating tone signal and the all-pass filter is capable of changing the phase of the tone signal corresponding to its frequency. Thus, the resulting musical tone can be controlled in accordance with touch, thereby enabling the simulation of vibration of pitch and the generation of non-harmonic components caused by touch in a natural musical instrument.

Abstract: An automatic performance apparatus for sequentially reading out performance data sequentially stored in a performance data memory to execute automatic performance, detects depression of a step forward key, and generates a tone for a predetermined time T.sub.3 on the basis of performance data in the performance data memory designated by an address pointer. When the step forward key is depressed again within the predetermined Time T.sub.3 from its first depression, the same performance data tone is continuously generated for the predetermined time T.sub.3 from the second depression timing of the step forward key. When the step forward key is continuously depressed for a predetermined time T.sub.2 or more from its first depression timing, the address pointer is stepped up upon each predetermined time T.sub.1 to generate a performance data tone sequentially designated by the address pointer. According to this automatic performance apparatus, automatic performance data can be rapidly edited by simple manipulation.

Abstract: The present invention provides a signal delay circuit for substantially steplessly changing a delay interval. The signal delay circuit is composed essentially of a delay controller, a first delay circuit, and a second delay circuit. The delay controller generates and outputs control data consisting of a real number bearing control information for controlling the delay interval, the real number consists of an integral portion and a fractional portion. The first delay circuit receives an incidental signal, delays the incidental signal for creating a first intermediate signal, and outputs the first intermediate signal, the first intermediate signal being delayed with respect to the incidental signal by an interval which is a product of a predetermined cardinal interval and the integral portion of the real number.

Abstract: An electronic musical instrument for reproducing chords or pure tones in a fixed interval scale, called Modified Eastern Music Tru-Scale Octave Transformation by the inventors, without overtone collision. The instrument includes a memory for storing and reproducing the 24 octave frequency interval system. The inventive instrument reproduces single or multiple notes with an interval system which eliminates dissonance, and allows complete modulation in all key signatures and pure tone relationships without altering the keyboard. The invention also contemplates the use of the Modified Eastern Music Tru-Scale frequencies with all MIDI interface compatible instruments or devices, in conjunction with a suitable frequency generator, or through internal or external memory sources. The invention also can be applied to a fretted stringed musical instrument which provides a novel fretboard for generating overtone collision-free tones with complete modulation of the Modified Eastern Music Tru-Scale Octave Transformation.

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.

Abstract: An electronic musical instrument having a searching function of a tone color is provide with a parameter degree memory and a mouse or the like for designating any desired range of a specified parameter degree. When the searching is executed, the tone color whose parameter's degree is included within the designated range of the specified parameter is found out.

Abstract: An electronic musical instrument for generating musical tone signal including a performance data generating part or generating performance data such as key-on, key-code and key-touch. The instrument also includes a control circuit for generating musical tone control data such as envelope rate data, envelope level data and initial phase data according to the performance data. Further, the control circuit adopts the time-sharing technology for generating plural musical tone signal, so that this instrument is comparatively simple at its circuit configuration compared with the prior art.

Abstract: The electronic musical instrument has synthesis means operative according to given tone control parameters for effecting a musical tone synthesis to generate a musical tone. Register means is provided for registering first data of a lower class and second data of an upper class in hierarchical data structure so as to constitute the tone control parameters. The first data is effective, at least, to define a timbre of a musical tone to be generated. The second data designates a plurality of the first data, effective to control the musical tone synthesis according to different timbres which are defined by the plurality of the first data. Edit means is provided for revising selectively the registered first data. Display means is provided for selectively indicating the second data which is associated to the first data to be revised in order for management of the hierarchical data structure.

Abstract: An electronic musical instrument utilizes a memory unit containing sampled values of waveforms stored in separately addressable memory locations. A first waveform address bus and a second waveform data bus are both connected to the unit. A counter is connected at its output to the first bus and is connected at its input to both a third address bus and a fourth system data bus. Sampled values of waveforms are supplied to the third and fourth buses. Waveform data is read out of the second bus. An arrangement including a central processing unit, a random access memory and a read only memory is connected to the third and fourth buses. This arrangement together with the counter determines, according to the stored sampled values, the sequence in which the individual memory locations and the sound information stored in the locations should be read.

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.

Abstract: A musical tone synthesizing apparatus generates musical tones by simulating the tone generation construction of a plucked-stringed instrument or percussion type stringed instrument. The apparatus has a plurality of closed loop circuits which simulate each tone generating element of the instrument, an excitation circuit which creates an excitation signal corresponding to the excitation given to the plurality of tone generating elements in response to the operation of a tone generating operator or the operational information of the tone generating operator, and a memory which stores a non-linear relation between the tone generating elements and the tone generating operator such as a hammer. The excitation signal is supplied to each of the closed loop circuits and circulates around each closed loop circuit and is delayed by means of a delay circuit having delay interval, and is fed back into the excitation circuit as the state of the tone generating elements.

Abstract: A musical tone waveform signal generating apparatus in which a waveform signal is circulated to generate a musical tone waveform signal. The apparatus includes an excitation portion for mixing an excitation control signal with the waveform signal and for non-linearly converting the mixed waveform signal and a signal transmission portion coupled with the excitation portion to feed back the converted waveform signal to the excitation portion with delay of a predetermined time for causing on the converted waveform signal a resonance frequency corresponding with a pitch of a musical tone to be generated.

Abstract: A musical tone waveform signal forming apparatus having a modulation function comprises a delay loop system including a delay circuit and a filter, a excitation signal input section, a control member and a filter characteristic control circuit. The excitation signal input to the delay loop system circulate therein, so that a musical tone signal is formed. The control member instructs modulation of a musical tone signal. The filter characteristic control circuit changes with time the characteristics of the filter in accordance with an output from the control member. So that pitch modulation accompanied with tone color modulation is effected.

Abstract: In order to simplify the input operations for the simulation of the non-electronic musical instrument such as the wind instrument, input values are visually displayed on a display screen of a display unit. Herein, by operating an input device such as a keyboard, a mouse, a light pen and the like, a tube shape, position and size of a tone hole of the wind instrument is visually drawn on the display screen in accordance with the predetermined plotting programs. In order to simplify calculations required for the computer simulation, the tube shape of the wind instrument, such as a conical shape, is divided into plural portions, each of which is simulated by another simple shape, such as a cylindrical shape. Then, parameters defining the simulated shape of each portion of the tube shape are generated in accordance with the predetermined algorithm, and these parameters are memorized in a memory.

Abstract: Header control data for setting various characteristics of an automatic performance tone such as tone color, tone volume, tempo, effect and the like are stored in a header portion of a memory. The header control data are loaded into a buffer register, and various characteristics of an automatic performance tone to be generated are established on the basis of the header control data stored in the buffer register. In response to activation of a changing operator, the header control data in the buffer register are changed and a hence various characteristics of the automatic performance tone to be generated are changed. When the data in the buffer register is changed during an automatic performance, the header control data stored in the memory is changed in correspondence to the change.

Abstract: An electronic musical instrument having a manipulator which includes a hand manipulator and manipulation region capable of setting a reference point and/or reference axis, adapted for generating the musical tones of a rubbed string instrument. The distance from the reference point to the position of performance manipulation and/or the angle between the line connecting the reference point with position of performance manipulation and the reference axis may be calculated to produce parameters for controlling the musical tone signal, such as the bow pressure and the direction of the bow movement.

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 auto-play electronic musical instrument stores note data of phrase tones for one bar corresponding to each of a plurality of keys of two octaves together with auto-accompaniment pattern data. Every time a key is operated, an adlib play is made by playing back corresponding phrase tones. When a key operation is interrupted during the adlib play, specific phrase tone are repetitively and automatically played back, thereby preventing a play from being interrupted halfway. The electronic musical instrument also stores fixed phrases such as introduction, fill-in, ending phrases, and the like, which are required according to the flow of a play. When one of the fixed phrases is played back by a selection button while the specific phrase is repetitively played back, the repetitive playback operation of the specific phrase is restarted when the playback operation of the fixed phrase ends. As a result, a user can play similar to a professional artist even with one finger in this key-on phrase play mode.

Abstract: In a parameter setting system for setting tone characters for producing musical tones in an electronic musical instrument, with respect to a plurality of tone characters having the same values as to a certain parameter, one group is made up with these plural tone characters, and parameters are stored in every group, whereby a required memory size is reduced. Further, respective tone characters are classified into a plurality of groups, and parameter setting and changing operations are executed in every group, whereby these operations are simplified.

Abstract: An envelope waveform generation apparatus which generates an envelope waveform consisting of a plurality of segments in order to control a musical tone signal, having a touch data detection device, which detects touch data corresponding to the relative strength of a generated musical tone, a memory device, which stores a plurality of control mode patterns comprising data showing whether each segment of this envelope waveform is to be controlled by means of this touch data, a selection device, which selects from among the plurality of control mode patterns stored in the memory device, and a touch data supplementing device, which controls each segment of the envelope waveform by means of the touch data, when the data in the control mode pattern selected by the selection device show the each segment is to be controlled.

Abstract: An electronic musical instrument including a keyboard, a CPU and a sound source. The keyboard designates a pitch of a musical tone. The CPU detects common pitch data of one of predetermined series of pitch data or interval between predetermined two pitches, when a plurality of pitches are designated by the keyboard. The predetermined series of pitch data are stored in a memory in units of pitches which can be designated by the keyboard. The sound source outputs a musical tone signal having a pitch designated by the keyboard and musical tone signals having pitches indicated by the common pitch data detected by the CPU or having pitches corresponding to the interval detected by the CPU.

Abstract: A device for generating a waveform of a musical tone, which comprises a waveform data memory for storing data representing the waveforms of a plurality of musical tones, a waveform data selector for selecting any combination of more than two waveform data stored in the waveform data memory, a sound emission instructing unit for issuing an instruction for emitting a musical tone, a waveform data reading unit for reading out the waveform data selected by the waveform data selector from the waveform data memory in a reading step of a processing program common to the musical tones, in response to an instruction issued by the sound emission instructing unit by effecting a time sharing processing, and a synthesizing unit for accumulating and synthesizing the waveform data read out by the waveform data reading unit.

Abstract: A musical tone synthesizing apparatus which synthesizes a musical tone signal in response to the wind instrument, brass instrument and the like provides an excitation circuit and a resonance circuit. The excitation circuit simulates the operations of the reed, mouth-piece and the like, while the resonance circuit which operates as the bi-directional transmission path simulates the resonance tube. The excitation signal generated from the excitation circuit is transmitted through the resonance circuit consisting of delay circuits and junction circuits. Thereafter, the transmitted signal is reflected by the terminal portion, and the reflected signal is transmitted through the resonance circuit and then fed back to the excitation circuit. Thus, the excitation signal is circulated in the loop consisting of the excitation circuit and resonance circuit. Based on the signal picked up from this loop, it is possible to obtain the synthesized musical tone signal which simulates the wind instrument tone and the like.

Abstract: An electronic music system which imitates acoustic instruments addresses the problem wherein the audio spectrum of a a recorded note is entirely shifted in pitch by transposition. The consequence of this is that unnatural formant shifts occur, resulting in the phenomenon known in the industry as "munchkinization." The present invention eliminates munchkinization, thus allowing a substantially wider transposition range for a single recording. Also, the present invention allows even shorter recordings to be used for still further memory improvements. An analysis stage separates and stores the formant and excitation components of sounds from an instrument. On playback, either the formant component or the excitation component may be manipulated.

Abstract: A series of delay circuits are provided which receive tone signal sample data of plural channels supplied on a time shared basis, hold plural tone signal sample data of each channel and hold these plural sample data while sequentially delaying them. The series of delay circuits are connected in an endless manner to form a circulating loop and plural data selection circuits are provided at predetermined delay stages. Each data selection circuit performs a selection control as to whether new tone signal sample data should be loaded in the delay circuit loop or data in the delay circuit should be circulated. Tone signal sample data which are provided sequentially from the delay circuit loop after delay are sequentially operated with filter coefficients of plural orders and results of the operation are accumulated to obtain a filter operation output.

Abstract: A musical tone control apparatus includes a sound source having a delay feedback synthesis circuit for forming musical tone signal by performing arithmetic processing of musical tone control data on the basis of a nonlinear table, a coordinate designation device capable of designating an arbitrary position and outputting a coordinate position corresponding to the designated position, a coordinate display device for displaying the coordinate position outputted by the coordinate designation device, and a table forming unit for forming the nonlinear table on the basis of the coordinate position outputted by the coordinate designation device.

Abstract: Respecting plural accompaniment patterns belonging to a common accompaniment style, an order is predetermined in which accompaniment patterns are sequentially changed. For example, this order may be predetermined to be an order in which a change of the accompaniment patterns can accomplish a more natural change in an accompaniment tone. Data indicative of a performance state on a keyboard is compared with a predetermined reference value. Whenever a comparison condition is satisfied, change of the accompaniment patterns is effected in the predetermined order. Data related to a changed-over accompaniment pattern is read out from a memory, based on which data an automatic accompaniment tone is generated. There may be a plurality of the predetermined orders. One order may be such that the accompaniment patterns are changed to allow an automatic accompaniment tone to achieve a progressively flourishing mood and another order may be such that brings an effect opposite to that achieved by the one order.

Abstract: An automatic musical editing apparatus is presented which permits easy and efficient alterations of tone generation timing while listening to a musical score. The apparatus employs a CPU 1 which controls the overall function of the apparatus according to the steps stored in memories, and interfaces with the various sections through a bus B. The RAM memories are used to store rhythm pattern data, including a header region HD for storing temporary data, followed by a duration data to specify the generation timing for the first tone DU1, followed by an event data IV1 to specify the first tone. The remaining tones are stored in the same alternating pattern of timings and corresponding tones. The end of the rhythm pattern is indicated by the end data ED.

Abstract: An electronic musical instrument capable of generating a musical tone sounded from a string instrument played with bow provides a memory and a bowing control for inputting bowing operation information indicative of a bowing direction, i.e., up-bow and down-bow. The memory pre-stores musical tone waveform data representative of musical tone waveforms generated by playing the string instrument with bow. Then, by reading out the musical tone waveform data by the speed corresponding to pitch information, a musical tone signal corresponding to the read musical tone waveform data is to be generated. Based on the bowing direction, the tone color of the musical tone signal is to be controlled.

Abstract: An instrument for storing musical playing data includes tone color assignment switch for assigning each of the designated tone colors to each of the recording tracks and record control device for recording the musical playing data into the recording tracks simultaneously with the assigned tone color thereto (DUAL mode). Also the record control device can be a device for recording the musical playing data into the recording track, with the assigned tone color thereto, to which the tone range, for example the left side tone range or the right side tone range of a keyboard, including the tone pitch of the musical playing data is preliminarily assigned (SPLIT mode). As a plurality of recording tracks are used in recording with the both modes, it allows a player to edit the data easily.

Abstract: A control value output apparatus for controlling a controllable value such as a tone volume value which can be continuously changed upon operation of an operation member of an operation unit for supplying a control value, comprises an output unit for holding a control value. A data source supplies a predetermined or preset control value to the output unit. The control value held in the output unit and the control value supplied from the operation unit are compared and when a coincidence output is generated, the output unit holds the control value from the operation unit in place of the presently held control value, and the output control value follows an operation position of the operation member.

Abstract: An electronic musical instrument has a plurality of oscillators. Each oscillator reads out segments of a waveform stored in memory using a random selection method. In one method the loop or start address is selected at random and the selection of a new address may be one cycle from the loop address or may be a repeat of the prior end address. In another method, both the loop and end addresses are randomly selected. Further, the end address is repeated a number of times determined randomly within a defined range of numbers.

Abstract: A tone generation system includes one or more digital waveguide networks coupled to one or more junctions, one of which receives a control signal for controlling tone generation. The control signal initiates and interacts with a wave signal propagating through the waveguide networks to form a tone signal. A non-linear junction may be employed which receives a signal from a waveguide, converts it in accordance with a non-linear function based upon the value of the control signal and provides it back to the waveguide. A tone signal whose pitch is determined by the wave transmission characteristics of the waveguide network is thereby produced.