Speech coding transmission equipment

Details Speech coding transmission equipment Speech coding transmission equipment

1988-02-18

1989-12-26

Kemeny, Emanuel S.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381 40, G10L 500

Patent

active

048903256

ABSTRACT:
Speech is data-compressed and coded for transmission using TDHC (Time Domain Harmonic Compression) for the voiced signal, and decimated sampling for the unvoiced signal. Features include voiced/unvoiced detection, pitch period detection, border detection, coding by ADPCM, and optimum quantization coding. Reception involves decoding and data-reconstruction.

REFERENCES:
patent: 4475227 (1984-10-01), Belfield
patent: 4550425 (1985-10-01), Anderson et al.
patent: 4622680 (1986-11-01), Zinser

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