Digital audio signal coding method through allocation of quantiz

Details Digital audio signal coding method through allocation of quantiz Digital audio signal coding method through allocation of quantiz

1992-07-30

1994-10-04

MacDonald, Allen R.

395 239, G10L 900

Patent

active

053533755

ABSTRACT:
Disclosed is an invention concerning a quantization bit number allocating section for sub-band coding, wherein data important for human auditory sense are efficiently coded within a limited coding bit capacity to provide a high-quality digital audio signal. The quantization bit number allocating section comprises a level calculating section, a logarithm calculating section, an index calculating section, a quantization bit number calculating section, a logarithm weighting table, and a sub-band weighting table, wherein the quantization bit number is determined every prescribed time according to human auditory sense and the characteristic of an input digital audio signal.

REFERENCES:
patent: 4622680 (1986-11-01), Zinser
patent: 4941152 (1990-07-01), Medan
patent: 4956871 (1990-09-01), Swaminathan
patent: 4972484 (1990-11-01), Theile et al.
Y. Mahieux and J. P. Petit, "Transform Coding of Audio Signals at 64 KBIT/S", IEEE Global Telecommunications Conference, vol. 1, pp. 518-522 (Dec. 1990).

Affiliated with

Also associated with

Rating

Digital audio signal coding method through allocation of quantiz does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital audio signal coding method through allocation of quantiz, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital audio signal coding method through allocation of quantiz will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-588122