Audio data processing apparatus

Details Audio data processing apparatus Audio data processing apparatus

1996-03-07

1998-10-20

Isen, Forester W.

Electrical audio signal processing systems and devices

Noise or distortion suppression

Interpolation

381119, H04B 1500

Patent

active

058258990

ABSTRACT:
A data processing circuit inputs and connects a plurality of digital audio input channels in parallel, time-divisionally individually processes data of each input channel at every period Tu that is determined by a standardized united sampling frequency 44.1 kHz, thereafter, performs a designated mixing, and outputs mixed data from a D/A converter 44 to a line. When the united sampling frequency 44.1 kHz and a sound source sampling frequency of audio data differ, an interpolating process is executed.

REFERENCES:
patent: 4628789 (1986-12-01), Fujimori
patent: 4719833 (1988-01-01), Katoh et al.
patent: 5416264 (1995-05-01), Toda et al.
patent: 5621805 (1997-04-01), Loh et al.
JEE Journal of Electronic Engineering, vol. 28 (1991), Tokyo JP, pp. 38-42, Teruo Fujino & Yohei Takane, Digital Mixing Console Meets Professional Mixing Needs.
Journal of the Audio Engineering Society, 1979 Oct., vol. 27, No. 10, New York, US, pp. 793-803, G.W. McNally, Microprocessor Mixing and Processing of Digital Audio Signals.

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