Adaptive prediction differential-pcm transmission method and...

Details Adaptive prediction differential-pcm transmission method and... Adaptive prediction differential-pcm transmission method and...

H - Electricity

03

M

354/68

H03M 3/04 (2006.01) H04B 1/66 (2006.01) H04B 14/06 (2006.01)

Patent

CA 1155226

ABSTRACT OF THE DISCLOSURE ADAPTIVE PREDICTION DIFFERENTIAL-PCM TRANSMISSION METHOD AND CIRCUIT USING FILTERING BY SUB-BANDS AND SPECTRAL ANALYSIS. Adaptive prediction differential-PCM transmission method of the type comprising a coding operation and a decoding operation in which each adaptive prediction is carried out in adjacent frequency bands on the number of signals obtained by weighting the quantized signal by coefficients obtained by spectral analysis in the quantized signal bands. The circuit for performing this method has a coding circuit and a decoding circuit and each predictor circuit comprises a spectral analyser having a plurality of parallel channels and predictor having the same number of prediction channels in parallel as the analysis circuit has channels. Application of the invention to the telecommunications field in general and telephony in particular.

342579

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