Adaptive method and apparatus for coding speech

Details Adaptive method and apparatus for coding speech Adaptive method and apparatus for coding speech

G - Physics

10

L

354/47

G10L 21/02 (2006.01) G10L 19/02 (2006.01)

Patent

CA 1301337

85-3-106 CN ADAPTIVE METHOD AND APPARATUS FOR CODING SPEECH 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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