Fast convergence method for bit allocation stage of MPEG...

Details Fast convergence method for bit allocation stage of MPEG... Fast convergence method for bit allocation stage of MPEG...

2006-02-14

2006-02-14

Young, W. R. (Department: 2655)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Psychoacoustic

C704S230000, C704S229000

Reexamination Certificate

active

06999919

ABSTRACT:
A method for an improved QSS (bit allocator) algorithm is disclosed. The disclosed method is capable of greatly improving determination time; thereby, improving the efficiency of converting a signal from an audio format to an MP3 format. The starting point of the QSS determination for a present frame (N) is the QSS of a previous frame (N−1). This starting point provides for improved efficiency for determining actual QSS of frame N as QSS[N−1] will be closer to QSS[N] than an arbitrary starting point. Thus, fewer iterations are required to determine QSS[N] as compared to conventional encoders. The algorithm of the present is more efficient than conventional methods in that it makes use of the fact that audio signal statistics usually do not change abruptly during the period of one audio frame to another.

REFERENCES:
patent: 5164828 (1992-11-01), Tahara et al.
patent: 5625746 (1997-04-01), Lim
patent: 5627938 (1997-05-01), Johnston
patent: 5682463 (1997-10-01), Allen et al.
patent: 5805222 (1998-09-01), Nakagawa et al.
patent: 5978762 (1999-11-01), Smyth et al.
patent: 5990957 (1999-11-01), Ryoo
patent: 6185253 (2001-02-01), Pauls
patent: 6363338 (2002-03-01), Ubale et al.
patent: 6725192 (2004-04-01), Araki
Nakajima et al., “MPEG audio bit rate scaling on coded data domain,” Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, May 1998, vol. 6, pp. 3669-3672, no day.
Aggarwal et al., “Trellis-based optimization of MPEG-4 advanced audio coding,” Proceedings 2000 IEEE Workshop on Speech Coding, Sep. 2000, pp. 142-144, no day.

Affiliated with

Also associated with

Rating

Fast convergence method for bit allocation stage of MPEG... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fast convergence method for bit allocation stage of MPEG..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fast convergence method for bit allocation stage of MPEG... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3692890