Patent ID: 6778956
Filing Date: 2004-08-17
Classification: G10L

Abstract:
A voice recording-reproducing system comprising:means of sampling voice signals on the basis of a preset sampling frequency; frame waveform storage means of storing a plurality of sample data in succession as one frame waveform; codebook storage means of storing a codebook for sorting standard patterns of the frame waveforms in order of power, and cataloging sets of the standard pattern as sorted and a pattern number, a selection range size for selecting a frame waveform from the codebook, and an offset amount of a selection range, from the leading edge of the codebook; waveform selection means of selecting a code pattern most similar to an input frame waveform among code patterns cataloged in the codebook storage means; means of converting a code number corresponding to the code pattern selected by the waveform selection means into an analog value, and recording the analog value in an analog flash memory; and code pattern selection range alteration means of renewing the offset amount of the selection range, on the basis of a code number resulting from encoding of a preceding frame.