Decoder of adaptive differential pulse code modulation

H - Electricity – 03 – M

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H03M 7/38 (2006.01) G06T 9/00 (2006.01) H03M 3/04 (2006.01) H03M 7/00 (2006.01)

Patent

CA 1216069

ABSTRACT A transcoder for transcoding adaptive differential pulse code modulation ("ADPCM") signals to pulse code modulation ("PCM") signals without cummulative transcoding noises even if mutual transcoding between ADPCM signals and non-linear PCM signals is repeatedly conducted, utilizing a prediction signal, and means to select an appropriate output PCM signal by a comparison process.

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