Progressive to lossless embedded audio coder (PLEAC) with...

Details Progressive to lossless embedded audio coder (PLEAC) with... Progressive to lossless embedded audio coder (PLEAC) with...

2008-07-01

2008-07-01

Hudspeth, David (Department: 2626)

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

C704S503000, C704S200100, C704S203000, C704S205000

Reexamination Certificate

active

07395210

ABSTRACT:
A system and method for lossless and/or progressive to lossless data coding (e.g., audio and/or image) is provided. The system and method employ a multiple factorization reversible transform component that provides quantized coefficients based, at least in part, upon a multiple factorization reversible transform. The multiple factorization reversible transform component can employ an N-point modulated lapped transform in accordance with one aspect of the present invention. The multiple factorization reversible transform component can comprise a modulation stage, a pre-FFT rotation stage, a complex FFT stage and a post-FFT rotation stage.

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