Method and apparatus for digital signal compression without...

Details Method and apparatus for digital signal compression without... Method and apparatus for digital signal compression without...

1998-10-13

2001-02-06

{haeck over (S)}mits, T{overscore (a)}livaldis I. (Department: 2741)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S504000, C379S088100

Reexamination Certificate

active

06185525

ABSTRACT:

FIELD OF THE INVENTION
The present invention is directed to digital signal compression, and more particularly to a decoder or vocoder capable of compressing digital signals that are parametrically modeled and encoded.
BACKGROUND OF THE INVENTION
Mobile communication products continue to push the envelope in size and capabilities. Memory optimization of stored digital data is therefore vital in addressing the current and future demands of users of such products. Voice, video and multimedia signals are memory intensive. Compression schemes for such signals can become quite complex with resulting uncompressed signals that fall below acceptable standards in intelligibility or uncompressed data lengths that are still too large to provide a significant advantage in memory space savings. Thus, what is needed is a compression scheme for a stored digital signal that simply reduces the size of the stored digital signal while maintaining intelligibility and a significant savings in memory space in an uncompressed mode.


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