Method and structure for synchronizing multiple, independently g

Details Method and structure for synchronizing multiple, independently g Method and structure for synchronizing multiple, independently g

1991-04-03

1993-09-14

Dwyer, James L.

Electrical audio signal processing systems and devices

Noise or distortion suppression

Interpolation

375106, H04B 1500, H04L 700

Patent

active

052456676

ABSTRACT:
A method for synchronizing multiple digital signals is disclosed herein which synchronizes samples of audio information generated by independent digital audio sources to a single master sampling clock reference. An interpolation filter associated with each independent digital audio source determines an interpolated audio sample based on audio samples from the associated digital audio source and based on a ratio between the master sampling rate and the sampling rate of the associated digital audio source. This ratio is derived from averaging a code indicating the number of samples received from an associated one of the independent digital audio sources during each master sampling clock period. The interpolation filter for each of the independent digital audio sources uses this ratio in combination with the audio samples to output an interpolated sample at each master sampling clock reference signal. Using this method, any number of independent digital audio sources may have their outputs interpolated with the above-described interpolation filter, and the interpolation filters will output interpolated samples which are synchronous with one another.

REFERENCES:
patent: 4202018 (1980-05-01), Stockham, Jr.
patent: 4473850 (1984-09-01), Foerster
patent: 4758907 (1988-07-01), Okamoto
patent: 4763206 (1988-08-01), Takahashi
patent: 4827490 (1989-05-01), Guerin
patent: 4856030 (1989-08-01), Batzer et al.
patent: 4864526 (1989-09-01), Dyer
"AES Recommended Practice for Digital Audio Engineering-Serial Transmission Format for Linearly Represented Digital Audio Data," J. Audio Eng. Soc., vol. 33, No. 12, Dec. 1985, pp. 976-984.
Julius O. Smith and Phil Gossett, "A Flexible Sampling-Rate Conversion Method", IEEE, 1984, pp. 19.4.1-19.4.4.

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