Enhancement method for a coarse quantizer in the ATRAC

Details Enhancement method for a coarse quantizer in the ATRAC Enhancement method for a coarse quantizer in the ATRAC

1993-12-06

1998-03-31

MacDonald, Allen R.

395 243, G10L 302

Patent

active

057347921

ABSTRACT:
A method for enhancing a block companding uniform midtread quantizer in the ATRAC (Adaptive Transform Acoustic Coding) for the quantization of digital audio signals, wherein the audio signals are represented by a plurality of frames of quantized spectral components. The method includes modifying all spectral sample values in a defined frequency interval by a constant factor, calculating a scale factor for the frequency interval from a maximum spectral sample value, and quantizing all the spectral samples in the modified frequency interval with a modified quantizer.

REFERENCES:
patent: 4964166 (1990-10-01), Wilson
patent: 5264846 (1993-11-01), Oikawa
patent: 5471558 (1995-11-01), Tsutsui
Chapter 10 of the Mini Disc System Description by Sony (1991).
Patent Abstrat of Japan, vol. 16, No. 412 (E-1256) to Kenji et al., dated Aug. 31, 1992 (relating to Japanese Patent Appl. No. 04-137,822 published May 12, 1992).

Affiliated with

Also associated with

Rating

Enhancement method for a coarse quantizer in the ATRAC does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Enhancement method for a coarse quantizer in the ATRAC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhancement method for a coarse quantizer in the ATRAC will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-58801