Systems and methods for low bit rate audio coders

Details Systems and methods for low bit rate audio coders Systems and methods for low bit rate audio coders

2004-02-06

2009-12-29

Dorvil, Richemond (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S201000, C704S203000, C704S205000, C704S500000

Reexamination Certificate

active

07640157

ABSTRACT:
A technique to enhance audio quality of a quantized audio signal when a perceptual audio coder is operating at low bit rates. The perceptual audio coder uses a modified two-loop quantization technique that maintains audio quality at medium to high bit rates while eliminating artifacts at low bit rates. The perceptual audio coder saves vanishing bands by stealing bits from surviving bands to reduce artifacts at low bit rates.

REFERENCES:
patent: 6438525 (2002-08-01), Park
patent: 2003/0115041 (2003-06-01), Chen et al.
patent: 2004/0002859 (2004-01-01), Liu et al.
patent: 2004/0196913 (2004-10-01), Chakravarthy et al.

Affiliated with

Also associated with

Rating

Systems and methods for low bit rate audio coders does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Systems and methods for low bit rate audio coders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Systems and methods for low bit rate audio coders will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4108869