Codec system and method

Details Codec system and method Codec system and method

2007-07-03

2007-07-03

Jeanglaude, Jean Bruner (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

C341S200000, C370S522000

Reexamination Certificate

active

10943112

ABSTRACT:
A sound codec including a compression portion and a decompression portion. The compression portion separates the incoming sound packet bandwidth into frequency sub-bands using a bank of infinite impulse response (IIR) filters. In accordance with the invention, the lower frequency signals are divided into more sub-bands than the higher frequency signals. Once the signals are divided into sub-bands, each sub-band signal is quantized. The resulting signals of all of the quantized sub-bands are then sent out over a communications link along with the filter state at the end of each sound packet. The decompression portion recombines the individual sub-band signals together (using a bank of infinite impulse response (IIR) filters) to form the audio data using the filter states to configure the reconstruction.

REFERENCES:
patent: 4455649 (1984-06-01), Esteban et al.
patent: 5913186 (1999-06-01), Byrnes et al.
patent: 5987181 (1999-11-01), Makiyama et al.
patent: 6215907 (2001-04-01), Kumar et al.
patent: 6441764 (2002-08-01), Barron et al.

Affiliated with

Also associated with

Rating

Codec system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Codec system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Codec system and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3756598