Amplitude enhanced sampled clipped speech encoder and decoder

Details Amplitude enhanced sampled clipped speech encoder and decoder Amplitude enhanced sampled clipped speech encoder and decoder

1985-11-14

1992-08-04

Stephan, Steven L.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

370 691, 375 25, H04N 712, H04B 700

Patent

active

051366525

ABSTRACT:
An encoder and a decoder is provided with each being usable independently of each other for improving the dynamic range of clipped speech digital systems by providing amplitude components to the clipped digital signal. The encoder processes an audio input signal along two signal paths, the first signal path including a clipper and digitizer means for forming a digitized clipped signal. The second signal path includes a rectifier, envelope detector and digitizing means for forming a digitized signal having amplitude components. Both digitized signals may then be transmitted to the decoder for reconstruction or stored for reconstruction at a later time.

REFERENCES:
patent: 3974336 (1976-08-01), O'Brien
patent: 4015088 (1977-03-01), Dubnowski et al.
patent: 4047108 (1977-09-01), Bijker et al.
patent: 4070550 (1978-01-01), Miller, Jr. et al.
patent: 4271332 (1981-06-01), Anderson
patent: 4477925 (1984-10-01), Avery et al.

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