Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1985-11-14
1988-12-06
Wong, Peter S.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 39, 381 50, 3645135, G10L 500
Patent
active
047900164
ABSTRACT:
In a speech coding system, scale factors are generated and encoded for each of a plurality of subbands of a Fourier transform spectrum of speech. Based on those scale factors, the spectrum is equalized. Coefficients of a limited number of subbands determined by the scale factors are encoded. The number of bits used to encode each coefficient of each transmitted subband is determined by the scale factor for each subband. At the receiver, coefficients of subbands which are not transmitted are approximated by means of a list replication technique.
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Mazor Baruch
Veeneman Dale E.
GTE Laboratories Incorporated
Wong Peter S.
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