Method for encoding digital audio signals and apparatus thereof

Details Method for encoding digital audio signals and apparatus thereof Method for encoding digital audio signals and apparatus thereof

1994-12-21

1997-09-30

Chin, Stephen

Pulse or digital communications

Pulse code modulation

Correcting or reducing quantizing errors

375241, 341200, 348398, 348405, 348418, 348422, 395 221, 395 238, 395 239, H04B 1404

Patent

active

056732899

ABSTRACT:
A method and an apparatus for encoding a digital audio signal are provided. The method comprises the steps of: mapping the digital audio signal into a plurality of sub-bands and outputting the mapped sub-band signals; allocating a number of bits to each sub-band signal according to human psychoacoustic properties, on the basis of the mapped sub-band signals; compensating each sub-band signal by receiving a transmitted previous quantized error, quantizing the compensated sub-band signals according to the corresponding allocated bit number, and transferring the current quantized error to the next quantization; and forming a transmit bit stream in frame units from the quantized data. Therefore, the quantized error generated during encoding of the audio signal is can be minimized.

REFERENCES:
patent: 5471558 (1995-11-01), Tsutsui
patent: 5490170 (1996-02-01), Akagiri et al.
patent: 5508949 (1996-04-01), Konstantinides

Affiliated with

Also associated with

Rating

Method for encoding digital audio signals and apparatus thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for encoding digital audio signals and apparatus thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for encoding digital audio signals and apparatus thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2262551