Patent
1994-02-07
1997-04-15
Hafiz, Tariq R.
395 21, 395 22, G10L 302, G10L 900
Patent
active
056218516
ABSTRACT:
During expansion of differential pulse code modulation PCM data into (PCM) data, particularly for speech data in data processing, the range of oscillation of the PCM data can be centered about an amplitude level when each current PCM value has a small value .DELTA. subtracted from it or added to it when respectively positive or negative to obtain a corrected current PCM sample value. Even if manipulation involved in data editing, such as division or connection, of differential or expanded PCM data has been performed or if an error has occurred during transmission of differential PCM data to produce an offset, such offset can be quickly corrected during the expansion.
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Mizuno Yoshihiro
Moriya Toshio
Satoyama Motoaki
Yanagi Kunihiro
Hafiz Tariq R.
Hitachi , Ltd.
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