Abstract: A modulated electromagnetic musical instrument and sound reproduction system includes an acoustic carrier signal source, a modulation signal source, a linkage element, and an acoustic output. The acoustic carrier signal source is produced electromagnetically or mechanically via human instrument playing. An electromagnetic modulation source mixes with the acoustic carrier signal within a linkage element to produce a nonlinear behavior. This nonlinear behavior's coupled interaction with a physical medium or acoustic body produces sideband frequency components to form unique musical sound outputs and audio effects.

Abstract: An apparatus for microphone positioning includes a spatial power distribution determiner and a spatial information estimator. The spatial power distribution determiner is adapted to determine a spatial power density indicating power values for a plurality of locations of an environment based on sound source information indicating one or more power values and one or more position values of one or more sound sources located in the environment. The spatial information estimator is adapted to estimate acoustic spatial information based on the spatial power density.

Abstract: A synthesizer system includes a CPU and host memory operating a software routine. The software routine stores a first part of each waveform signal in a sample pool of host memory and provides remaining portions of selected musical sounds from the hard drive to a stream cell array without an audio perceivable delay. The synthesizer system utilizes a caching system which allows low cost, high storage devices to be utilized in an audio synthesizer system. MIDI control signals are provided to an audio processor for selecting appropriate digital waveform signals.

Abstract: A method is provided for automatically rearranging a plurality of digital information units (DIU) arbitrarily designated in a first digital information file (DIF), each DIU containing data with artistic structure and characteristics, to create a plurality of second DIF's having different artistic structure and characteristics from the first DIF. The method includes a first process for automatically (1) reordering, (2) repeating, (3) creating alternate sequences of, (4) altering durations of, (5) including and excluding certain ones of, and (6) automatically manipulating the characteristics of the plurality of DIU.

Abstract: The invention provides a performance recording/reproducing apparatus including a playing information recording device, a data discrimination device and a data transfer device. The data discrimination device discriminates a specific channel of playing data, which needs correction or modification from the others all merged on one of the tracks of the playing information recording device. The data transfer device transfers data of the specific channel to another track. The apparatus thus efficiently corrects or modifies only data of the specific channel and accordingly completes recording of performance in a short while.

Abstract: The invention provides performance recording apparatus for separately recording plural event data, each corresponding to an electronic instrument, as plural channels of playing information onto playing information recorder. The apparatus includes channel converter for converting a channel discrimination code of newly received event data into another channel discrimination code, and merger for merging event data with the converted channel discrimination code with other event data which have already been recorded on the playing information recorder. Since any identical channel is not assigned to plural event data corresponding to different electronic instruments, playing information corresponding to plural channels is easily processed and stored on the playing information recorder.

Abstract: A method and apparatus for studying music includes a music analysis system, which in conjunction with a proprietary storage medium, enables the user to comparatively analyze a recorded musical performance alone or in synchronization with a modifiable synthesized version of the same musical performance. The system further provides facilities for defining specific segments of the original and synthesized performances as well as means for re-orchestrating the synthesized performance, adding additional instrumental parts to the synthesized performance, changing the tempo of the synthesized performance on playback, and electronically displaying and/or printing the score of the synthesized performance. The invention further includes a proprietary storage medium containing data representative of the original musical performance, digital data representative of the synthesized performance and timing data. The invention further discloses a method for generating the data stored on the proprietary storage medium.

Abstract: A recording medium playing apparatus comprises a reading device for reading, from an information recording medium on which a sub-program signal carrying a musical instrument play control signal is written in order together with a main program signal, the main program signal and the sub-program signal simultaneously according to an order of writing, a musical instrument play control signal decoding device for decoding a musical instrument play control signal from the sub-program signal and supplying the musical instrument play control signal to electronic musical instruments, and a control device for controlling the operation of the reading device in response to an operational command. The control device is adapted to command the musical instrument play control signal decoding device to transmit a sound generation stop command signal when the content of the operational command is to cause the reading device to perform a reading operation in which the order of reading is different from the order of writing.

Abstract: An electronic musical instrument includes a musical tone information storing device, a plurality of external memory devices, a control unit, a switching unit, and a determining unit. The musical tone information storing device stores musical tone information. The control unit controls information transfer between at least one of the external memory devices and the musical tone information storing device. The switching unit generates a transfer command. The determining unit determines whether an external memory device of the highest priority in accordance with a predetermined priority is in a transfer enable state. The control unit controls information transfer between the external memory device of the highest priority which is selected by the determining unit and the musical tone information storing device.

Abstract: Data for a plurality of musical pieces is preset in a ROM pack and also on a tape recorder. Musical piece data read out from the ROM pack or tape recorder is supplied from a control section to melody generators, a chord generator, a bass generator and a rhythm generator. Melody data, chord data, and rhythm data obtained from these generators are coupled through an amplifier to a loudspeaker.