Configurable common filterbank processor applicable for...

Details Configurable common filterbank processor applicable for... Configurable common filterbank processor applicable for...

2011-03-29

2011-03-29

Abebe, Daniel D (Department: 2626)

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

C704S219000, C381S022000, C375S241000

Reexamination Certificate

active

07917370

ABSTRACT:
A configurable common filterbank processor applicable for various audio standards and its processing method. Inverse modified discrete cosine transform (IMDCT) and window and overlap-add (WOA) decoding operations required by AC-3 and AAC, and IMDC, WOA, and matrixing decoding operations required by MP3 are divided into several different modes, and a quick algorithm is provided for expediting the operation of these modes, and a hardware architecture is designed universally for these modes, so that the hardware architecture can be applicable for the decoding operations of three different audio standards, respectively AC-3, AAC and MP3, to expand the scope of applicability of a decoder.

REFERENCES:
patent: 5787390 (1998-07-01), Quinquis et al.
patent: 6807524 (2004-10-01), Bessette et al.
patent: 7788107 (2010-08-01), Oh et al.
patent: 7848922 (2010-12-01), Jabri et al.
patent: 2007/0274383 (2007-11-01), Yu et al.

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