Abstract: The invention describes an apparatus for software or hardware emulation of acoustic feedback effects. The invention comprises an analog to digital interface (200) for the input, whose output is summed (202) with a feedback of this digital signal passing through an amplifier model (204), a room acoustics model (206) and a string model (210). The summed signal (202) is converted from digital to analog (205) and can then be connected to a standard amplifier. The room acoustic model comprises a volume control (208) where the degree of feedback is controlled, while the string model contains a model (212) of which harmonics to feed back, and finally an algorithm (214) that decides which fundamental frequencies that the incoming digital signal contains.

Abstract: A digital piano apparatus includes an input unit including a plurality of keys and a plurality of pedals, a sound source unit, a sound field synthesizing unit, and a speaker unit. The sound field synthesizing unit includes virtual sound source spot signal generating means for generating a plurality of virtual sound source spot signals of a number equivalent to the number of output channels in the speaker unit, the plurality of virtual sound source spot signals being used for forming reproduced sound fields of a grand piano on the basis of a plurality of tone signals supplied from the sound source unit; mixing means for mixing each virtual sound source spot signal with the remaining virtual sound source spot signals; and sound effect means for applying a sound effect by signal processing using impulse responses to the virtual sound source spot signals.

Abstract: The disclosure pertains to a scratch effect controller for use by a disk jockey, wherein at least one electromagnet creates the slippage tension or friction effect between the user manipulated disc, which includes a vinyl-like surface thereby simulating a vinyl record, and the rotatable or fixed platter. The strength of the electromagnet is variable so as to create a variable slippage tension or friction effect.

Abstract: An automatic performance data processing apparatus which makes it possible to simply convert a plurality of automatic performance data into digital audio data in a batch. Each of a plurality of automatic performance data in an order designated by a playlist data stored in a storage device is sequentially reproduced. Audio signals generated by a tone generator that is supplied with tone generator driving events that occur in response to reproduction of each automatic performance data and that generates audio signals based on the supplied tone generator driving events are digitally recorded. The digitally recorded audio signals are stored in a storage medium as digital audio data.

Abstract: The proposed invention is a portable multi-sound effect system providing a novel and unique solution for processing the electrical audio signals created by a guitar. The innovation according to the present invention is by attaching a signal processing unit along with a touch-sensitive dynamic control unit upon the front panel of the guitar's body for controlling and processing electrical signals produced by an amplified guitar, e.g. electric, bass, acoustic or classic guitar.

Abstract: The disclosure presented here involves an effect device that can easily connect with other effect devices in parallel. A preferred embodiment of this device is equipped with a number of components including an effect add means that adds effects, a mixing means that mixes the musical signals, a mode switching means that configures the operation from parallel mode to serial mode, and a phase reversal means that reverses the phase of the musical sound signals. Various combinations using the above means are possible and are presented in this disclosure. The output terminal outputs the musical sound signals that were selected, mixed, and or treated by the enabled features of the underlying embodiments.

Abstract: As the user executes a performance on a preliminary or trial basis, performance data based on the user's performance are evaluated, a performance tendency of the user is extracted as a result of the extraction, and then, performance tendency information, indicative of the extracted performance tendency, is generated. Psychological state, such as a mood or feeling, of the user is detected from the performance tendency, and feeling information, indicative of the detected psychological state, is generated. Then, tone color control information corresponding to the generated feeling information is acquired from a storage section, such as a “mood/feeling” vs. tone color control” correspondence table, the acquired tone color control information is delivered to a tone generator, and desired tone color parameters are set on the basis of the tone color control information.

Abstract: Some embodiments of the invention provide a computer system for processing an audio track. This system includes at least one DSP for processing the audio track. It also includes an application for editing the audio track. To process audio data in a first interval of the audio track, the application first asks and obtains from the DSP an impulse response parameter related to the DSP's processing of audio data. From the received impulse response parameter, the application identifies a second audio-track interval that is before the first interval. To process audio data in the first interval, the application then directs the DSP to process audio data within the first and second intervals.

Abstract: On the basis of performance event information, at least two notes to be sounded in succession or in an overlapping relation to each other are detected, and a tone pitch difference between the detected at least two notes is detected. Tone pitch difference limitation ranges are set in corresponding relation to various rendition styles. Rendition style to be imparted to the notes to be sounded in succession or in an overlapping relation is designated, and a comparison is made between a tone pitch difference limitation range corresponding to the designated rendition style and the detected tone pitch difference, so as determine whether the designated rendition style is applicable or not. In this way, whether the designated rendition style is to be applied or not is automatically controlled in accordance with the tone pitch difference of the at least two notes to be imparted with the rendition style.

Abstract: A tone control device applied to an electronic wind instrument realizes an octave-changeover-blowing technique in which the same note is produced with different octaves respectively by use of the same fingering state, thus increasing controllable ranges with regard to the tone volume, tone color, and tone pitch. A plurality of flow sensors are arranged in proximity to an edge with which a jet flow caused by blowing air into a blow hole of a lip plate collides within a tube of a wind instrument controller simulating an air-reed instrument. The flow sensors are horizontally arranged to detect a jet width, thus controlling the tone volume; and the flow sensors are vertically arranged to detect a jet eccentricity or a jet thickness, thus controlling the tone color. Ascending or descending of the tone pitch by octaves is controlled by use of the flow sensor and a jet length sensor.

Abstract: There is provided a procedure for generating tone-generation controlling key-on and key-off signals, which is applicable to either a first-type key operation detection device that, in response to depressing operation of a key, generates detection signals in correspondence with at least predetermined upper and lower positions or a second-type key operation detection device that, in response to depressing operation of a key, not only generates detection signals in correspondence with at least predetermined upper and lower positions but also generates a detection signal of an intermediate position unobtainable by the first-type key operation detection device. On the basis of the detection signals received from the key operation detection device applied, a first key-on signal is generated when a key has reached the lower position from the upper position.

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: The disclosure presented here involves an effect device that can easily connect with other effect devices in parallel. A preferred embodiment of this device is equipped with a number of components including an effect add means that adds effects, a mixing means that mixes the musical signals, a mode switching means that configures the operation from parallel mode to serial mode, and a phase reversal means that reverses the phase of the musical sound signals. Various combinations using the above means are possible and are presented in this disclosure. The output terminal outputs the musical sound signals that were selected, mixed, and or treated by the enabled features of the underlying embodiments.

Abstract: An Interactive Performance Interface for use with an audio system uses at least one performance mode to provide access to control rate and audio rate signals activated by interaction rate signals synthesized by interactive control envelopes. Audio signals, control rate signals, interactive envelopes and performance modes are all selectable and may be user-activated with user controls that change function according to a hierarchy of conditional latches.

Abstract: Filtering is performed on original waveform to remove components of a predetermined frequency band from the waveform, and dividing positions of the original waveform data are determined on the basis of envelope levels of the filtered waveform. The dividing positions may be determined on the basis of differentiation of an envelope of the filtered waveform. Rise positions in the original waveform data are detected, and one rise position may be selected from among one or more rise positions detected within a predetermined range of the original waveform and extracted as a dividing position of the original waveform. Presumed beat positions in the original waveform may be detected, and rise positions of the original waveform may be detected within predetermined ranges corresponding to the presumed beat positions.

Abstract: There is provided a music reproduction system which enables music editing and acoustic effect application by simple operations, for realizing a desired musical concept in an operator's mind. An operating terminal that can be carried by an operator generates motion information in response to motion of the operator carrying the operating terminal unit. Music data of a piece of music to be reproduced is edited based on the generated motion information. The motion information includes peak information indicative of magnitude of the motion. When a peak value indicated by the peak information exceeds predetermined first and second threshold values, music reproduction control information is generated based on the peak information, and when the peak value indicated by the peak information is larger than the first threshold value and smaller than the second threshold value, acoustic effect control information is generated based on the peak information.

Abstract: This invention provides a system for customizing musical instrument signal processing enabling users to produce different tonal characteristics in created musical pieces. In order to create such tonal characteristics, a new mathematical model of tonal characteristics may be digitally created based on two or more initial mathematical models of tonal characteristics. After simulating a first and second initial mathematical models of tonal characteristics, the new mathematical model is created by interpolating one or more coefficients of the first and second initial mathematical models. The new mathematical model may also adjust a control parameter where the control parameter may exist between two values. When the control parameter is the first value, the new mathematical model is the first initial mathematical model. When the control parameter is the second value, the new mathematical model may be the second initial mathematical model.

Abstract: A music information processing means comprises a music editing means for assigning an arbitrary sound pattern selected from a plurality of sound patterns in a sound buffer to at least one track, a sound presentation trial processing means for outputting the sound pattern assigned to the track on a speaker of a display monitor via SPU when a control input of the user satisfies a predetermined condition, and an audio data processing means for registering audio data extracted from audio data introduced from a music CD (Compact Disc) or the like loaded in an optical disk drive as one of the sound patterns in a sound pattern file in the sound buffer.

Abstract: Multiple channels simultaneously provide multiple, modified digital audio signals, respectively, based on the same digital audio input signal. Each channel has a respective nonlinear effects section to apply a nonlinear transfer function, such as one that emulates a vacuum tube guitar amplifier, based on the input signal. In addition, a respective audio effects section is provided in each channel to apply an audio effect, such as a linear audio effect, based on the input signal. This audio effect is set in each channel by a controller. In another embodiment, multi-tracker (e.g., double tracker) functionality is provided by the multiple channels wherein at least one of the delay effect, pitch shift, and gain change in a channel is automatically changed as a function of the input signal.

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: Method for electronically reproducing the sound of an acoustic accordion, that is provided with a number of keys/buttons, which can be pressed individually so as to excite a corresponding number of reeds that are coupled with every single key/button; for electronically reproducing the sound generated by pressing each key/button, the sounds that are characteristic of each reed that is coupled with a key/button are generated individually and electronically.

Abstract: Reverberation characteristics of an original sound field and a reproduction sound field are measured and a difference between the reverberation characteristics is obtained. A reflected sound pattern added to reproduction sound is calculated so that the reverberation characteristics of the reproduction sound field approximate to the reverberation characteristics of the original sound field from the difference between the reverberation characteristics and is added and reproduced in the reproduction sound field. A frequency is divided into predetermined bands and a reflected sound pattern to be added is obtained similarly in the respective bands and is added to the corresponding frequency band of the reproduction sound and reproduced. Measurement of the reverberation characteristics is obtained by inputting an impulse signal to a speaker and collecting a generated sound wave by a microphone provided in a position corresponding to the head of a listener and analyzing the sound wave by an analyzer.

Abstract: A vibration signal (e.g. a human voice) is generated at a desired pitch corresponding to a tone pitch of a musical tone desired to be generated, and is input via a microphone. The pitch of the input vibration signal and an amplitude (volume) level thereof are detected. When an amplitude level equal to or greater than a predetermined threshold level has been detected but the pitch has not been detected yet, an instruction of generation of a noise tone is issued thereby to generate the noise tone. Thereafter, when a certain pitch is detected, a musical tone is generated at a pitch determined according to the detected pitch. In this way, a noise tone is generated during a delay in pitch detection, and a delay in response at the start of sounding is absorbed.

Abstract: Multiple channels simultaneously provide multiple, modified digital audio signals, respectively, based on the same digital audio input signal. Each channel has a respective nonlinear effects section to apply a nonlinear transfer function, such as one that emulates a vacuum tube guitar amplifier, based on the input signal. In addition, a respective audio effects section is provided in each channel to apply an audio effect, such as a linear audio effect, based on the input signal. This audio effect is set in each channel by a controller. In another embodiment, multi-tracker (e.g., double tracker) functionality is provided by the multiple channels wherein at least one of the delay effect, pitch shift, and gain change in a channel is automatically changed as a function of the input signal.

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: A digital processing system for monitoring sound effects produced by codecs during a signal processing session is provided. The digital processing system comprises, a sound source for producing signals for processing, a sound monitor having at least two channels for monitoring sound quality of the sound source, a sound recorder for recording the sound source, a playback device for playing a recorded file of sound produced by the sound source, a codec simulator for simulating sound effects produced by codecs, a plurality of codecs for compressing and decompressing sound files and a control interface for sampling, adjusting, and implementing an optimum codec based on monitoring of sound effects produced by codec simulation. A user controlling the system may monitor sound variances produced by any one of the plurality of codecs affecting the quality of sound from the sound source during signal processing of the source sound without interruption of the signal-processing session.

Abstract: Score of a given music piece is visually shown on a display. When a particular style of rendition is to be imparted to a desired note on the musical score, a user selects a desired one of style-of-rendition icons and designates a desired note location on the musical score as a pasting location of the selected style-of-rendition icon. Thus, the selected style-of-rendition icon is shown on the display in corresponding relation to the designated pasting location. The style-of-rendition icons are appropriately associated with sets of style-of-rendition parameters, so that performance data, i.e., tonal characteristics of the note, corresponding to the pasted location of the style-of-rendition icon is controlled, in accordance with the style-of-rendition parameters corresponding to the pasted style-of-rendition icon on the musical score, to thereby achieve a performance in the style of rendition corresponding to the pasted icon.

Abstract: A musical data performance system comprises a first changing pattern generator that generates a first changing pattern by combining a plurality of note lengths and an effect giving device that gives an effect to a tone signal in accordance with the generated first changing pattern.

Abstract: A sound effects controller for controlling operation of at least one sound processing device includes an output connection for coupling at least one output of at least one sound processing device and a selection switch for selectively activating the at least one sound processing device. An additional switch is further included between the output connection and the selection switch for transferring the activated output of at least one sound processing device to the output connection. The sound effects controller may also include a device so that selections of different sound processing devices can be queued to enable ready selection of such different devices.

Abstract: This invention provides a system for customizing musical instrument signal processing enabling users to produce different tonal characteristics in created musical pieces. In order to create such tonal characteristics, a new mathematical model of tonal characteristics may be digitally created based on two or more initial mathematical models of tonal characteristics. After simulating a first and second initial mathematical models of tonal characteristics, the new mathematical model is created by interpolating one or more coefficients of the first and second initial mathematical models. The new mathematical model may also adjust a control parameter where the control parameter may exist between two values. When the control parameter is the first value, the new mathematical model is the first initial mathematical model. When the control parameter is the second value, the new mathematical model may be the second initial mathematical model.

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 plurality of audio signal delays, each with high resonance positive feedback, distortion characteristics, and selectable delay times corresponding to a desired resonant frequency, provide twang and resonance synthesis for moments of sparkle or vibrantly-responsive ongoing backdrops. The selectable delay times may match a musical scale or other resonant frequency distribution. Delay, feedback, and signal processing characteristics and 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.

Abstract: A reverberation generation processor. The reverberation generation processor generates a specific auditory signal according to a predetermined virtual environment having characteristics of spatial dimension, sound reflection, and decline. The natural sequence generator generates a natural sequence having a predetermined number of items according to the characteristics of the virtual environment. The sequence adjusting device adjusts gains of the items and a time scale between the items of the natural sequence and outputs an audio signal. The filter processor filters a predetermined frequency band of the audio signal according to the characteristics of the virtual environment and divides the filtered audio signal into a high frequency audio signal and a low frequency audio signal. The high frequency reverberation generator transforms the high frequency audio signal to a high frequency reverberation signal.

Abstract: A method for processing an audio signal is provided that includes receiving an audio signal and integrating the audio signal with a selected one of a plurality of sound effects. The method also includes generating an output that reflects the integration of the audio signal and the selected sound effect. The output may then be communicated to a next destination.

Abstract: This invention provides a system for customizing musical instrument signal processing enabling users to produce different tonal characteristics in created musical pieces. In order to create such tonal characteristics, a new mathematical model of tonal characteristics may be digitally created based on two or more initial mathematical models of tonal characteristics. After simulating a first and second initial mathematical models of tonal characteristics, the new mathematical model is created by interpolating one or more coefficients of the first and second initial mathematical models. The new mathematical model may also adjust a control parameter where the control parameter may exist between two values. When the control parameter is the first value, the new mathematical model is the first initial mathematical model. When the control parameter is the second value, the new mathematical model may be the second initial mathematical model.

Abstract: Plural part playback channels each play back music performance signals of respectively assigned performance parts selectively in an enhanced mode or in an unenhanced mode. When an enhanced mode is designated for a particular channel 2 (at time A), the channel 2 plays back the music performance signals in a prominent manner and channels 1, 3-6 plays back in a suppressed manner. The tone volume of the channels 1, 3-6 in the suppressed manner is set by manipulating the contrast dial CD. Where the enhanced mode is set for plural channels 2 and 6 (between time C and time D), manipulation of an enhanced mode clear switch SC (at time D) causes cancellation of the prominent manner of playback at the channels 2 and 6 as well as the suppressed manner of playback at the channels 1, 3-5.

Abstract: A display 21 for setting atone control parameter is disposed on an operation panel of an electronic musical instrument. Function and subfunction operator groups 23, 24 are arranged in parallel in two rows along a longer side of display 21. Function operator group 23 corresponds to each function in the first hierarchy, and subfunction operator group 24 corresponds to each subfunction in the second hierarchy that is designated for each function in the first hierarchy. Display 21 displays a tone control parameter that is to be set by the operation of a parameter setting operator group 25 and the characters representing each function and each subfunction of the function and subfunction operator groups 23, 24. By operation of each operator group 23, 24, the functions and the subfunctions are switched hierarchy by hierarchy, whereby a desired tone control parameter can be easily set to be a desired value or can be easily changed.

Abstract: Style-of-rendition identification information representing a style of rendition of a performance tone is received, and reference is made to a predetermined table on the basis of the received style-of-rendition identification information to thereby obtain, from the table, style-of-rendition module data corresponding to the received style-of-rendition identification information. Waveform is produced on the basis of the obtained style-of-rendition module data. The style-of-rendition module data is data representing behavior of a waveform to be produced in accordance with a style of rendition and may include data representing characteristic behavior of vectors that control the waveform to be reproduced. The behavior of the waveform can be defined by various waveform factors. The vectors include, for example, vectors of various fundamental waveform factors for producing the waveform, such as a waveform shape, pitch, amplitude and time axis.

Abstract: Resonance is realized at a desired plurality of tone pitches even after the musical tone signals of a plurality of channels have been synthesized; synthesized musical tone signals are successively delayed, the musical tone signals that are successively delayed are weighted, synthesized and output; the delayed, weighted, synthesized and outputted musical tone signals are fed back, and a series of successive delays, weights, synthesizes and outputs by the feed back are repeated and thus resonance characteristics is imparted; the amount of weighting the musical tone signals successively delayed is determined based upon a relationship among the delay feedback period, the period of sampling the generated musical tone signals and the tone pitch period of the resonance sound imparted with resonance characteristics, and a frequency of the resonance characteristics are determined; Therefore, the resonance characteristics are added at a desired tone pitch after the plurality of musical tone signals are synthesized into

Abstract: A musical data performance system comprises a first changing pattern generator that generates a first changing pattern by combining a plurality of note lengths and an effect giving device that gives an effect to a tone signal in accordance with the generated first changing pattern.

Abstract: The characteristic value detection section 311 detects a characteristic value concerning input musical data. The detected characteristic value is converted by a genre information determination section 312 to genre information representing a genre of the contents of the input musical data. Based on the genre information, the parameter determination section 313 determines an acoustic processing parameter which is used for adjusting the tone of the output from the acoustic processing section 314. In accordance with the acoustic processing parameter as determined, the acoustic processing section 314 applies predetermined acoustic processing to the input musical data. The musical data having been subjected to the predetermined acoustic processing is reproduced by a reproduction section 315. Thus, the musical signal processing device makes it possible to obtain a tone which is adapted to the contents of the input musical data.

Abstract: Control data are extracted from tone waveforms obtained by actually playing acoustic musical instruments in various styles of rendition, and a plurality of these control data are stored in memory to provide databases. Automatic or manual music performance data are supplied in real or non-real time. Desired one or more notes are selected from among the supplied music performance data, and a desired style of rendition is selected in corresponding relation to the selected notes. Then, one or more control data corresponding to the selected style of rendition are read out from the memory so that generation of a tone corresponding to the selected notes can be controlled in accordance with the read-out control data. In this way, characteristics of the selected style of rendition can be imparted to any particular note or notes included in the music performance data. The control data are stored in the memory in association with partial sounding segments such as an attack, body and release.

Abstract: A self-contained audio effects processor has a handheld joystick from which both position-dependent and state-dependent effects are effectuated by means of motion of the joystick as well as by actuation of one or more buttons on the joystick. The position-dependent effects control the degree to which an effect is produced, e.g., the amount of intentional distortion applied to a signal, the amount of pitch-shift, etc.; these effects are produced primarily by selective directional motion of the joystick by the user. The state-dependent effects define the particular effect to be imparted to a signal being processed or produced in the processor, e.g., distortion, pitch-shift, etc.; these effects are selected largely by one more or buttons on the joystick which are preferably accessible from the same hand that grips the stick, thus providing a natural and convenient “feel” that many users have already become accustomed to from electronic game-playing.

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 performance data editing system is actualized by a computer system (or electronic musical instrument) which is equipped with a display and a mouse. The system initially provides a score window containing various types of execution icon layers onto which execution icons are attached and arranged in conformity with a progression of a musical tune on a screen of the display. The system provides an icon modify window that allows the user to modify parameters of a specific icon which is selected from among the execution icons attached onto the score window by double clicks of the mouse. Herein, the score window shows a part of a musical score (or a staff notation with notes), while the icon modify window shows an edited portion of the musical score by magnification, wherein a range of execution-related data being edited on the icon modify window is automatically indicated on the musical score of the score window.

Abstract: An acoustic signal producing apparatus wherein various musical effects are applied to a musical tone signal and an acoustic signal respectively produced at an internal tone generator and supplied from an external device such as a microphone, an electronic musical instrument or the like in such a manner that an applying state of the musical effects can be changed in accordance with various effect control parameters applied thereto.

Abstract: A mount by which a component is non-destructively mounted on a musical instrument includes a receptacle and one or more abutment members, such as resilient clips, which do not screw into the instrument but engage the instrument to hold the mount on the instrument. A component is secured to the mount to install the component on the instrument. One such component provides digital control of an analog tone adjustment circuit. The digital control can include selectable preset conditions. Another such component provides on-board effects processing, such as a chorus effect. An output electrical coupling is provided with a switch used to energize the circuit of the component with which it is used.

Abstract: Non-looped continuous sound made up of random sequencing of digital sound segments is generated by taking several short segments of an otherwise continuous sound and forming independent records of those short segments. The stored segments are re-assembled into a sound sequence of arbitrary length based on selecting the next sound segment according to some statistical algorithm. The selected algorithm may be simply a random or pseudo-random selection, or it may provide a probability weighting to emphasize some sound records over others, or some combination of factors also affected by external stimuli such as light, heat or operator input. Apparatus for generating random sequenced digital sound are disclosed. Another aspect of the invention is logical sequence sound in which the selection of sound segments proceeds according to a logical sequence which is programmable.

Abstract: A tone to which resonance characteristics have been added to is repetitively delayed so as to reverberate. The delay of the tone is determined based on the resonance characteristics, and a modified tone in which the reverberation and resonance characteristics are related to one another is generated.

Abstract: There are provided a tone source for generating tone signals in plural channels independently and effect impartment sections, provided in corresponding relations to the channels, for imparting individual effects to the tone signals of the channels generated by the tone source. Each of the effect impartment sections, in accordance with tone control information unique to the tone signal of the corresponding channel, controls a parameter of the effect to be imparted. In a case where any of the effect impartment sections uses a signal delaying memory to impart an effect, when a damping (or truncating process) is performed in any of the channels, the storage area to be used for the channel is switched to another unused storage area so as to prevent any preceding tone's is delayed signal from being undesirably mixed into the signal of a new tone.