Arrangement for reducing clipping in a digital conference arrang

Details Arrangement for reducing clipping in a digital conference arrang Arrangement for reducing clipping in a digital conference arrang

1982-05-27

1984-11-13

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

179 18BC, H04M 356

Patent

active

044829973

ABSTRACT:
For use in a multichannel time division multiplexed conference arrangement where the samples in one time frame of simultaneous speakers are summed for distribution to each of the conferees, the disclosed arrangement reduces the amount of speech that is often not heard (clipped) when a conferee first begins to speak. The arrangement features a delay unit which stores all the speech samples from one time frame for a period of time greater than the processing time required to detect and determine whether to include speech samples from a new speaker in the distributed sample. By first storing the samples from one time frame and then summing the stored samples, any samples from a new speaker may be included in the resulting output sample to reduce speech clipping.

REFERENCES:
patent: 3883697 (1975-05-01), Brown
patent: 4000377 (1976-12-01), Sharret
patent: 4387457 (1983-06-01), Munter
"TASI-E Communications System", R. L. Easton, P. T. Hutchison, R. W. Kolor, R. C. Mondello, R. W. Muise, International Conf. on Comm., pp. 49.3.1-49.3.5.

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