Enhancing source coding systems by adaptive transposition

Details Enhancing source coding systems by adaptive transposition Enhancing source coding systems by adaptive transposition

2007-08-21

2007-08-21

Azad, Abul K. (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S228000

Reexamination Certificate

active

10022526

ABSTRACT:
The present invention relates to a new method for enhancement of source coding systems using high-frequency reconstruction. The invention teaches that tonal signals can be classified as either pulse-train-like or non-pulse-train-like. Relying on this classification, significant improvements on the perceived audio quality can be obtained by adaptive switching of transposers. The invention shows that the so-switched transposers must have fundamental differences in their characteristics.

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