Method and device for compressing signals of plural channels

Details Method and device for compressing signals of plural channels Method and device for compressing signals of plural channels

1989-11-01

1992-12-01

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84622, 341122, 341143, 341200, 36471502, 375 27, G10H 106, G10H 702

Patent

active

051681161

ABSTRACT:
When analog signals of two or more channels are converted to digital signals, a differential signal of at least two of these channels (A and B) is taken out. The signal of either channel A or B or the sum signal of these signals and the above-mentioned differential signal are quantized by binary-coding with n and m bits (n>m), respectively. The quantization is also performed by sampling with the sampling frequency f1 and f2 (f1>f2). As a result the memory capacity is saved and the transmission speed is improved.

REFERENCES:
patent: 4099122 (1978-07-01), van Buul
patent: 4754258 (1988-06-01), Nakamura et al.
patent: 4797653 (1989-01-01), Takayama
patent: 4905562 (1990-03-01), Beacham
patent: 4916996 (1990-04-01), Suzuki et al.
patent: 4992889 (1991-02-01), Yamagami et al.
Vail, Mark, "Yamaha TX16W 12-Bit Sampler", Keyboard Report, Jun. 1988.

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