Abstract: There is provided an electronic musical apparatus that is capable of providing listenable performance by using data reflecting the intention of the user among usable data, as well as a program for electronic music. A tone generator device is capable of sounding musical tones based on data representing preset musical tone control information or user musical tone control information.

Abstract: To a tone generation apparatus is removably attachable a plug-in board for generating a tone on the basis of performance information and extending the tone generating function of the tone generation apparatus. Tone color name information and tone color parameter name information of tone color data possessed by the attached plug-in board is stored in a nonvolatile memory. Thus, any tone color possessed by the plug-in board can be known with reference only to the nonvolatile memory and without a need to refer to the plug-in board. The nonvolatile memory can also store tone color data of a custom voice obtained by editing original tone color data of the plug-in board. With this arrangement, the plug-in board is allowed to obtain the tone color data of the custom voice from the nonvolatile memory, as necessary.

Abstract: A frequency spectrum is detected by analyzing a frequency of a voice waveform corresponding to a voice synthesis unit formed of a phoneme or a phonemic chain. Local peaks are detected on the frequency spectrum, and spectrum distribution regions including the local peaks are designated. For each spectrum distribution region, amplitude spectrum data representing an amplitude spectrum distribution depending on a frequency axis and phase spectrum data representing a phase spectrum distribution depending on the frequency axis are generated. The amplitude spectrum data is adjusted to move the amplitude spectrum distribution represented by the amplitude spectrum data along the frequency axis based on an input note pitch, and the phase spectrum data is adjusted corresponding to the adjustment. Spectrum intensities are adjusted to be along with a spectrum envelope corresponding to a desired tone color. The adjusted amplitude and phase spectrum data are converted into a synthesized voice signal.

Abstract: Multiple kernel-mode audio processing modules or filters are combined to form a module or filter graph. The graph is implemented in kernel-mode, reducing latency and jitter when handling audio data (e.g., MIDI data) by avoiding transfers of the audio data to user-mode applications for processing. A variety of different audio processing modules can be used to provide various pieces of functionality when processing audio data.

Abstract: A music performance data signal contains tone effect control messages to control the tone signal processor for imparting tone effects to the produced musical tones in a high-ranked model of tone producing apparatus in which many and complicated tone effects are available. In order that such a music performance signal can drive a low-ranked model of tone producing apparatus in which a small number of and simple tone effect are available, the tone effect control messages for the high-ranked model are converted to tone effect control messages which can realize similar tone effects as on the high-ranked model. For the tone effects not directly available in the low-ranked model, the tone effect control messages are converted with reference to conversion tables.

Abstract: A digital system and method of operation is provided in which musical notes and melodies are synthesized. The operation done for music synthesis is based on time domain processing of prerecorded waveforms, referred to as analysis waveforms. The computations are done using time-marks, which is a set of digital sample positions of the analysis waveform indicating the starting position of each period of the fundamental frequency or an arbitrary position for non-periodic analysis waveforms. The algorithm defines on a time scale the time-marks of the synthesis waveform. The synthesis is based on making a relation between the analysis time-marks and the synthesis time-marks. The synthesis waveforms are built with the extraction of small portions of signal located at corresponding time-mark positions of the analysis waveform and adding them to the corresponding synthesis time-marks on the synthesis time-scale.

Abstract: There is provided a session apparatus that enables the user to freely start and enjoy a music session with another session apparatus without being restricted by a time the session should be started. A session apparatus is connected to at least one other session apparatus via a communication network in order to perform a music session with the other session apparatus. Reproduction data to be reproduced simultaneously with reproduction data received from the other session apparatuses is generated and transmitted to the other session apparatus. The reproduction data received from the other session apparatus is delayed by a period of time required for the received reproduction data to be reproduced in synchronism with the generated reproduction data, for simultaneous reproduction of the delayed reproduction data and the generated reproduction data.

Abstract: A computer-readable medium stores a data structure that encodes an audio performance for interactive playback. The data structure includes a virtual instrument pool, which encodes an interactive part of the audio performance. Audio content of the interactive part is encoded at least in a sequence of synthesizer control data. Each datum in the synthesizer control data specifies a digital sample of the audio content to be played back. The data structure also includes a global accompaniment pool, which encodes non-interactive portions of the audio performance. The global accompaniment pool includes timing information to synchronize the playback of the audio performance.

Abstract: A musical tone generation apparatus is basically configured by a main sound source device installing an extension board. Herein, the main sound source device is configured by a CPU, memories, operators, a music synthesizer, a mixer, an effector and a sound system, while the extension board is configured by fabricating a CPU (or sequencer), memories and a music synthesizer (or effector). When the extension board is installed in the main sound source device, function setting data regarding new functions installed on the extension board is automatically transferred to the main sound source device so that a user is capable of adequately setting and controlling the new functions by using the operators. If the extension board corresponds to a tone color extension board that provides extended tone colors which differ from preset tone colors being installed in the main sound source device in advance, the main sound source device is capable of generating musical tones using the extended tone colors.

Abstract: A method of generating musical tones and a storage medium storing a program for executing the method are provided. Musical piece data is decomposed into phrases, the musical piece data being formed of pieces of performance data arranged in the order of performance. The pieces of performance data of the musical piece data are analyzed for each of the phrases obtained by the decomposing step. Tone color control data is prepared for each of the phrases according to results of the analyzing. The pieces of performance data of the musical piece data are reproduced by sequentially reading the pieces of performance data at timing at which the pieces of performance data are to be performed to the order of performance.

Abstract: This invention provides a signal processing and signal synthesis technique from a family of signal processing and signal synthesis techniques designed to readily interwork or be used individually in creating new forms of rich musical timbres. A real-time controllable mix of a plurality of multiple output frequency-reduced signals and the cross-products of these signals provides rich animated harmonically partitioned spectra. Mixing parameters may be recalled from stored program control or modulated in real-time by arbitrary control signals, including envelope generators, low-frequency oscillators, and those derived from an original input signal, and specifically including the amplitude of an original input signal. The real-time controllable mix may have multiple outputs and be subjected to further signal processing and multiple-channel amplification.

Abstract: A server stores audio and coordinated video digital files in a library, and upon requests supplies individual files to multiple dedicates processors under sole control of the server. Music files have separate vocal and specific instrument channels. The processor supplies single channels to amplifiers and speakers having controlled frequency ranges capable of reproducing only the frequencies on the individual channels. Images from the video files are projected on screens around and above an audience seated on swivel chairs. Coordinated sounds emanate from speakers distributed over the screens. Bus-like wiring extends, from the processor. Individual speaker wires connect to ends of bundled conductors.

Abstract: A method is provided for generating synthetic audio signals with a synthesizer by generating a synthesizer output signal with a low sampling rate of the synthesizer. Because of the low sampling rate, missing high-frequency components of the synthesizer output signal are generated by adding a high-frequency signal. An amplitude-modulated high-frequency signal is preferred, and the amplitude-modulated signal S and synthesizer output signal are converted to a higher sampling rate.

Abstract: Tone generator LSI generates a subframe start signal to be interruptively given to a microprogram, by which the microprogram is activated to issue an interrupt signal to a device driver. In response to the interrupt signal, the device driver prepares control data for use in a next frame. The microprogram receives control data from a RAM at the beginning of each frame and calculates control data for individual samples of the frame on the basis of the received control data as well as control data generated for the last sample of an immediately preceding frame, so as to create a plurality of samples of tone data for each subframe. The thus-created tone data are temporarily written into a buffer and then read out from the buffer in accordance with predetermined clock pulses.

Abstract: An audio processing apparatus is constructed for generating an auxiliary audio signal based on an original audio signal and mixing the auxiliary audio signal to the original audio signal. In the apparatus, a control section designates a pitch of the auxiliary audio signal. A processing section processes the original audio signal under control of the control section to generate the auxiliary audio signal having the designated pitch, and applies a first effect to the generated auxiliary audio signal. An effector section applies a second effect different from the first effect to the original audio signal. An output section outputs the original audio signal applied with the second effect concurrently with the auxiliary audio signal applied with the first effect. The control section may control the processing section to alter the first effect dependently on a difference between a pitch of the original audio signal and the designated pitch of the auxiliary audio signal.

Abstract: Prior art synthesizers often select a small interval d to detune. For example, if the nominal oscillator frequency was 1000 Hz, then applying a detune parameter of 10 cent would result in a detuned oscillator frequency of 1006 Hz. However, at the next octave, the nominal frequency would be 2000 Hz with the detuned oscillator frequency of 2012 Hz. Accordingly, a detuned oscillator has a frequency deviation which is proportional to its nominal frequency. Hence, when mixing detuned oscillators, the resulting signal has a beat frequency which varies with the pitch and doubles with each octave.

Abstract: An oscillator for digital music synthesis that provides a smooth waveform that is rich in harmonic content and whose shape is continuously and dynamically variable over a wide range of harmonically rich shapes. The oscillator is efficient in that it generates the shapes in a time consonant with sampling rates commonly used in music synthesis, and is generally free of discontinuities which would otherwise create audible alias components on subsequent signal processing.

Abstract: A music apparatus is constructed for processing a music tone signal in response to a clock signal at each sampling period. In the music apparatus, a clock generator generates the clock signal. A signal processor is operable in synchronization to the clock signal for time-divisionally processing a plurality of music tone signals through a plurality of channels within one sampling period. A clock controller is operative during a supply duration allocated within one sampling period for supplying the clock signal to the signal processor from the clock generator to thereby operate the signal processor, and is operative during other than the supply duration within one sampling period for stopping the supplying of the clock signal to the signal processor to thereby suspend the signal processor.

Abstract: This invention provides a signal processing and signal synthesis technique from a family of signal processing and signal synthesis techniques designed to readily interwork or be used individually in creating new forms of rich musical timbres. Synthetic hysteresis waveshaping is used to create naturally appealing dynamic spectral variations from an input signal of varying amplitude and waveshape. Waveshaping curves, waveshaping parameters, hysteresis characteristics and hysteresis parameters may be recalled from stored program control or modulated in real-time by arbitrary control signals, including those derived from the original input signal. The invention may be used individually or in conjunction with other signal processing and signal synthesis techniques in creating new forms of rich musical timbres. The invention may also be used in spatially-distributed timbre construction.

Abstract: A quadratic phase interpolation method for synthesis of musical tones incorporates both phase and frequency measurements at the boundaries of a data frame using a weighted least square algorithm approach. The approach assumes that the true frequency and phase at the two ends of a data frame conform to a quadratic phase model and that exact match between measured phase and frequency with the quadratic model is not necessary because of the noise in the measurements.

Abstract: A method and apparatus are disclosed to permit real time, distributed performance by multiple musicians at remote locations. The latency of the communication channel is transferred to the behavior of the local instrument so that a natural accommodation is made by the musician. This allows musical events that actually occur simultaneously at remote locations to be played together at each location, though not necessarily simultaneously at all locations. This allows locations having low latency connections to retain some of their advantage. The amount of induced latency can be overridden by each musician.

Abstract: A range control system includes an input section for inputting a singing voice, a fundamental frequency extracting section for extracting a fundamental frequency of the inputted voice, and a pitch control section for performing a pitch control of the inputted voice so as to match the extracted fundamental frequency with a given frequency. The system further includes a formant extracting section for extracting a formant of the inputted voice, and a formant filter section for performing a filter operation relative to the pitch-controlled voice so that the pitch-controlled voice has a characteristic of the extracted formant. The system further includes an input loudness detecting section for detecting a first loudness of the inputted voice, and a loudness control section for controlling a second loudness of the voice subjected to the filter operation to match with the first loudness.

Abstract: A musical sound generator combines a software processing and a hardware processing. A sub CPU210 generates musical note data based on the musical score data 340. Main CPU110 refers to a sound source file, converts musical note data and generates PCM data. A sound processor 210 converts the musical note data at a sound synthesis circuit 221 to generate PCM data. D/A converter 222 converts the PCM data into analog signals. The speaker 300 receives the signals and emits the sound.

Abstract: A method of generating musical tones and a storage medium storing a program for executing the method are provided. Musical piece data is decomposed into phrases, the musical piece data being formed of pieces of performance data arranged in the order of performance. The pieces of performance data of the musical piece data are analyzed for each of the phrases obtained by the decomposing step. Tone color control data is prepared for each of the phrases according to results of the analyzing. The pieces of performance data of the musical piece data are reproduced by sequentially reading the pieces of performance data at timing at which the pieces of performance data are to be performed to the order of performance.

Abstract: There are provided a power line spectrum extractor for extracting power line spectra of a waveform to be processed; a level interpolation controller for performing level interpolation control on the power line spectra at every unit of a certain frequency, which is not higher than half a sampling frequency; and a cepstrum analyzer for performing Fast Fourier Transformation on the power spectra subjected to the level interpolation control and performing Inverse Fast Fourier Transformation on values found by performing level setting with a specified coefficient.

Abstract: A system and a method of measuring, decomposing, processing and uniquely recombining forces and vibrations acting on stringed musical instruments (SMI). The system utilizes a digital signal processor and reproduces the musical sound characteristics of an acoustic instrument into high fidelity electrical signals for amplification, processing and/or filtering and reproduction of musical sounds by uniquely exploiting, through measurements and subsequent signal processing, the vector nature of string excitation forces (SEF) and body vibrations of stringed musical instruments. A signal processing system of the current invention also utilizes a plurality of sensors, each responsive to at least one of force, displacement, velocity or acceleration indicative of the vibrational energy of the strings, to produce a sensor signal vector, which is then processed and transformed by a plurality of re-creation filters into a transformed signal vector, and then resynthesized into an output signal.

Abstract: There are provided a musical tone-generating apparatus and a musical tone-generating method which make it possible to distribute tone generation loads evenly between a plurality of musical tone-generating sections, even if musical tones designated for tone generation are more concentrated in some specific tone ranges,, to thereby reduce a tone generation load applied to each of the musical tone-generating sections, and a storage medium storing a program for executing the musical tone-generating method. Performance information is supplied which simultaneously instructs a start of generation of musical tones corresponding to each of a plurality of tone pitches. Each of a plurality of tone generators generates musical tones of at least one pitch name independently of each other, all of the tone generators being capable of generating musical tones of all pitch names.

Abstract: Data to be used for generating tone waveform data corresponding to a partial time section of a tone are stored in a basic file or expansion file. In a wave part area of each of the files, there are stored wave part data to be used for generating tone waveform data corresponding to a partial time section of a tone, and the wave part data includes information designating several groups of template data indicative of variations, in the partial time section, of a plurality of tone factors, such as a waveform template, pitch template, amplitude template, spectrum template and time template. Each of the expansion files contains data representative of differences from data stored in the corresponding basic file. The data are stored in such a manner as to avoid overlapping data storage, in order to minimize the total quantity of data.

Abstract: The present invention is directed to a musical sound modification apparatus and method whereby natural musical instrument sounds are analyzed to extract time variant information of pitch, amplitude and timbre, as Musical Sound Modification Data, which are stored in a temporary memory area as pitch Template, amplitude Template and timbre Template for each of attack part, sustain part and release part of a musical sound. Musical Sound Modification Data for one musical note is formed by selectively joining each Template of attack part, sustain part and release part, and for each of pitch, amplitude and timbre, and is pasted to a series of musical note data in music data. At music reproduction by the music data, the generated musical sound gives a “realistic feeling” to human ear owing to supplied time variant characteristics, because each of pitch, amplitude and timbre of the musical sounds corresponding to the musical note data is modified by said Musical Sound Modification Data.

Abstract: Musical instruments that generate notes according to sounds (e.g., vocal sounds) and manually selected scales are provided. Vocal sounds of the user are analyzed to select a note that will be generated in a scale selected by the user. The user can enter the scale or scale constraints by depressing a chord on a keyboard and the vocal sounds can be analyzed to determine which note on the selected scale is closest in pitch to the vocal sounds. Additionally, the generated notes can be augmented in other ways including having the onset and/or offset of the note generated adjusted to correspond to an identified rhythm in the ambient sounds.

Abstract: A software based digital wavetable synthesizer receives musical data from an external source and generates a plurality of digital sample values corresponding to the musical source. The musical source may be a synthesized music source or an actual instrument. In an exemplary embodiment, a sample for each semi-tone for the musical instrument is sampled and stored. A subsequent process analyzes the sampled and selects a single cycle representing that musical instrument at each of the semi-tones. The data is subsequently normalized such that each cycle begins with a zero value and the normalized data is stored in a data structure along with labels indicative of the musical instrument and the musical note. In subsequent use, the user can create synthesized music by selecting the desired instrument and notes. Additional musical rules, such as rules associated with Indian classical music, may be applied to specify the synthesis process.

Abstract: A tone generation device includes a computation unit which consists of multiple computation devices, a sheet music data analysis unit which reads data from a sheet music data holding unit and a waveform data holding unit and computes the sum total of the amount of processing based on this data. The tone generation device further includes a computation processing allocation instruction unit, a computation unit processing procedure holding unit and a processing routine holding unit. Based on the computed sum total of the amount of processing, the computation unit processing allocation instruction unit determines the amount of processing for each computation device so that it is an amount of processing that matches the capacity of each computation device, and sets a processing procedure in accordance with the determined amounts of processing. The set processing procedure is held in the computation unit processing procedure holding unit.

Abstract: The present invention describes a device and methods for synthesizing a musical audio signal. The invention includes a device for storing a collection of sound segments taken from idiomatic musical performances. Some of these sound segments include transitions between musical notes such as the slur from the end of one note to the beginning of the next. Much of the complexity and expressivity in musical phrasing is associated with the complex behavior of these transition segments. The invention further includes a device for generating a sequence of sound segments in response to an input control sequence—e.g. a MIDI sequence. The sound segments are associated with musical gesture types. The gesture types include attack, release, transition, and sustain. The sound segments are further associated with musical gesture subtypes. Large upward slur, small upward slur, large downward slur, and small downward slur are examples of subtypes of the transition gesture type.

Abstract: A musical sound signal generation apparatus for producing a sound corresponding to an operated key can produce a sound of a newly-operated key even if all the musical sound signal generation means for generating a musical sound signal are in use. On producing the new sound, the apparatus prevents the players and the audience from having a sense of incongruity derived from the change in sound production. Especially, when a chord has been produced, it can maintain the state of chord production normally.

Abstract: A plurality of different fluctuation data are added to a plurality of sound signals, and the plurality of sound signals are synthesized to form a tone. Thus, different fluctuations are added to the sound signals or to part sounds of the sound signals, enabling the fluctuation to be controlled for each of the components of the tone.

Abstract: A music apparatus is constructed for receiving an input signal composed of either of a voice signal and a tone signal and for processing the input signal based on a timbre change command signal to generate at least one channel of an output signal. In the music apparatus, a reference pitch designation section designates a reference pitch. An output signal generation section receives the input signal, the timbre change command signal and the reference pitch designated by the reference pitch designation section for changing a timbre of the input signal in accordance with the timbre change command signal, and for changing a pitch of the input signal above or below the reference pitch in accordance with the timbre change command signal, thereby generating the output signal having the changed timbre and the changed pitch.

Abstract: A musical sound generator combines a software processing and a hardware processing. A sub CPU210 generates musical note data based on the musical score data 340. Main CPU110 refers to a sound source file, converts musical note data and generates PCM data. A sound processor 210 converts the musical note data at a sound synthesis circuit 221 to generate PCM data. D/A converter 222 converts the PCM data into analog signals. The speaker 300 receives the signals and emits the sound.

Abstract: A musical tone synthesizing apparatus and method are provided to enable automatic addition of parts in response to addition of extended tone colors. Herein, prescribed tone colors are set to the tone-generation instructors, which are respectively assigned to performance inputs for inputting performance data from designated devices such as a keyboard, a sequencer and other MIDI instruments or devices. The tone-generation instructors produce output performance data based on which a tone generator generates corresponding musical tone signals. Addition of the extended tone colors can be actualized by installation of an extended board into an extended slot. Upon detection of the addition of the extended tone colors at a start of system, the apparatus automatically extends tone-generation instructors so that a user is capable of selecting the extended tone colors for the extended tone generation instructors, respectively.

Abstract: A pitch shifter capable of shifting an acoustic signal in pitch to an arbitrary level with a high degree of accuracy without any change in reproduction time, and also sufficiently reducing high-frequency distortion without being increased in size or speeded-up is provided. Stored in a filter coefficient string storage 6, four filter coefficient strings corresponding to four sub-filters produced through polyphase decomposition of a low-pass filter for 4-fold oversampling. Filter coefficient string selectors 5a and 5b select, based on the first and second bits of the decimal part of each of read addresses generated by the read address generators 4a and 4b, respectively, any one of the four filter coefficient strings stored in the filter coefficient string storage 6. Filter operation units 2a and 2b receive paired sound data strings, and carry out a filter operation by using the filter coefficient strings selected by the filter coefficient string selector 5a and 5b, respectively.

Abstract: An electric musical instrument is provided, which enables rich and diverse expressions to be achieved in musical performance. A driving member drives a tone generating source. A driving member-side signal generator obtains a signal from the driving member and outputs the obtained signal. A musical tone signal generator generates a musical tone signal using the signal output by the driving member-side signal generator and outputs the generated musical tone signal. In another aspect of the invention, a tone generating source-side signal generator obtains a tone generating source-side signal from the tone generating source and outputs the obtained signal, and a driving member-side signal generator obtains a driving member-side signal from the driving member and outputs the obtained signal. A modulation device frequency-modulates one of the tone generating source-side signal and the driving member side signal with the other signal. The modulated signal is output from the modulation device as a sound.

Abstract: A tone synthesis system employs digital filtering methods to enable the practical usage of unstable filter elements in a real-time synthesis model. Truncated infinite impulse response (TIIR) filters are used to approximate portions of the reflection impulse response of an acoustic horn such as a trumpet bell. Methods for resetting filter state enable the use of internal unstable filter poles. Similar state resetting methods enable the use of unstable one-pole filters in the scattering junction formed between two conical acoustic bores. High quality tone synthesis can be achieved without the necessity of a complicated filter representing large sections of the bore of a woodwind instrument.

Abstract: Data to be used for generating tone waveform data corresponding to a partial time section of a tone are stored in a basic file or expansion file. In a wave part area of each of the files, there are stored wave part data to be used for generating tone waveform data corresponding to a partial time section of a tone, and the wave part data includes information designating several groups of template data indicative of variations, in the partial time section, of a plurality of tone factors, such as a waveform template, pitch template, amplitude template, spectrum template and time template. Each of the expansion files contains data representative of differences from data stored in the corresponding basic file. The data are stored in such a manner as to avoid overlapping data storage, in order to minimize the total quantity of data.

Abstract: A method is designed for controlling a plurality of tone generating drivers by an integrating driver installed in an operating system to generate music tones according to performance data created by a music application software. In the method, the performance data created by the music application software is inputted into the integrating driver through an application program interface provided by the operating system. The performance data is distributed from the integrating driver to one or more of the tone generating drivers provisionally registered to the integrating driver. The registered tone generating driver is operated to generate waveform data of a music tone at a specific sampling frequency based on the distributed performance data. The waveform data is streamed back from the registered tone generating driver to the integrating driver. The specific sampling frequency of the streamed waveform data is converted into a common sampling frequency by the integrating driver.

Abstract: A musical instrument having a signal output function 1 for outputting a given signal in response to a user command, and a mode managing function 2 for managing process modes of an electronic keyboard and compulsorily finishing an arbitrary process mode of the electronic keyboard when the signal is outputted by the signal output function 1, and for changing to a tone color selection mode after the compulsory finish for setting a tone color of the electronic keyboard to a given tone color. Even during each of the process modes, the tone color of the electronic musical instrument can be compulsorily set to a given one.

Abstract: A synthesized strong hit waveform data is generated by synthesizing a strong hit amplitude component separated from a strong hit waveform data generated based on tone of a strong play and a weak hit phase component separated from a weak hit waveform data generated based on tone of a weak play. This synthesized strong hit waveform data is stored in a memory together with a weak hit waveform data. A musical tone signal is generated by interpolating the weak hit waveform data and the synthesized strong hit waveform data read out from the memory, in response to a signal supplied from external portion.

Abstract: In a tone color map generating section, a tone color parameter and the effective time for making the tone color map effective are extracted from an SMF stored in a MIDI file database, and the tone color parameter is stored in a tone color map database. When a demand processing section receives a playback start position for starting the playback of the SMF, a read processing section reads the tone color parameter stored in the tone color map database in accordance with the playback start position, and generates time information indicating time to set the tone color parameter in a MIDI device. A sending circuit sends the tone color parameter together with the corresponding time information, and then sends a MIDI signal from the playback start position thereafter, stored in the MIDI file database.

Abstract: For a given tone generating channel, tone waveform sample data corresponding to a plurality of sampling cycles (e.g., 100 samples) are arithmetically formed collectively. Once performance information such as MIDI event data is supplied to a tone generator MIDI driver from an application program such as a MIDI sequencer, the MIDI driver, in response to an input MIDI signal, assigns new tone generation to a designated tone generating channel of a tone generator task, and prepares tone controlling parameters to be set in the designated channel. The tone generator task arithmetically forms tone waveform data by use of the tone controlling parameters and passes the tone waveform data to a CODEC circuit functioning as an A/D converter. The program and a general-purpose operating system are sequenced and executed by a preemptive multitask management program. In this way, it is possible to reduce overheads involved in arithmetically forming tone waveform samples.

Abstract: A MIDI-compatible gesture synthesizer is provided for use with a conventional music synthesizer to create musically realistically sounding gestures. The gesture synthesizer is responsive to one or more user controllable input signals, and includes several transfer function models that may be user-selected. One transfer function models properties of muscles using Hill's force-velocity equation to describe the non-linearity of muscle activation. A second transfer function models the cyclic oscillation produced by opposing effects of two force sources representing the cyclic oppositional action of muscle systems. A third transfer function emulates the response of muscles to internal electrical impulses. A fourth transfer function provides a model representing and altering virtual trajectory of gestures. A fifth transfer function models visco-elastic properties of muscle response to simulated loads.

Abstract: A musical tone generating apparatus includes a position information generating device to generate musical instrument position information (PS) as plane coordinates coordinate 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 converter 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: A network system is constructed for operating a music apparatus having a function as an electronic musical instrument under control by a local terminal which is communicable with a host computer through a network. In the system, the host computer is installed with a capability utilized to compute data effective to extent the function of the electronic musical instrument. The local terminal is connectable to the host computer through the network to remotely control the capability of the host computer so as to compute the data prepared for the music apparatus. The local terminal downloads the computed data from the host computer into the music apparatus through the local terminal. The music apparatus operates according to the downloaded data to extend its own function as the electronic musical instrument. Further, the capability itself can be transferred from the host computer to the music apparatus through the local terminal.