Method and system for reduction of quantization-induced...

Details Method and system for reduction of quantization-induced... Method and system for reduction of quantization-induced...

2005-04-26

2005-04-26

McFadden, Susan (Department: 2655)

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

C704S222000, C704S230000

Reexamination Certificate

active

06885993

ABSTRACT:
Compressing the digitized time-domain continuous input signal typically includes formatting the input signal into a plurality of time-domain blocks having boundaries, forming an overlapping time-domain block by prepending a fraction of a previous time-domain block to a current time-domain block, transforming each overlapping time-domain block to a transform domain block including a plurality of coefficients, partitioning the coefficients of each transform domain block into signal coefficients and residue coefficients, quantizing the signal coefficients for each transformed domain block and generating signal quantization indices indicative of such quantization, modeling the residue coefficients for each transform domain block as stochastic noise and generating residue quantization indices indicative of such quantization, and formatting the signal quantization indices and the residue quantization indices for each transform domain block as an output bit-stream. The continuous data may include audio data.

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