Music – Instruments – Electrical musical tone generation
Patent
1992-12-15
1995-05-23
Kuntz, Curtis
Music
Instruments
Electrical musical tone generation
84633, G10H 700
Patent
active
054183219
ABSTRACT:
An audio channel system provides an analog signal corresponding to a sound waveform in a computer system. The audio channel system includes a plurality of audio channels. Each audio channel contains a predetermined number of audio data samples for producing a particular sound waveform. A plurality of volume bits define a volume level of each audio data sample to be played. An audio processor processes the sound waveforms of each audio channel. The audio processor acts as a shared processing element which receives the audio data samples from each audio channel. The audio processor divides the audio data samples into a plurality of data such that the plurality of data for each audio data sample is pipelined through the audio processor in a serial manner. The plurality of data for each audio data sample for each audio channel is in various processing stages at any given time. The audio processor combines the data samples and volume bits to produce an audio output signal for each audio channel to produce a total audio output signal.
REFERENCES:
patent: 4338674 (1982-07-01), Hamada
patent: 5038661 (1991-08-01), Kaneko
Horowitz and Hill, Art of Electronics, pp. 416-419 (Analog-Digital Conversion), 1980.
Amiga Hardware Reference Manual, Chapters 5, 8, pp. 131-164, (Audio Hardware), pp. 215-227 (Interface Hardware), 1986.
Mano, Computers System Architecture, 2nd Ed., pp. 366-367, (hardware implementation of signed 2's complement numbers), pp. 372-375, (Booth's Multiplication Algorithm), 1982.
Keller Glenn J.
McDonald Timothy J.
Redfield James
Schmid Robert S.
Commodore Electronics Limited
Kuntz Curtis
Lee Ping W.
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