FastMPEG: Time-scale modification of bit-compressed audio information

被引：0
|
作者：
Covell, M
Slaney, M
Rothstein, A
机构：
来源：
2001 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS I-VI, PROCEEDINGS: VOL I: SPEECH PROCESSING 1; VOL II: SPEECH PROCESSING 2 IND TECHNOL TRACK DESIGN & IMPLEMENTATION OF SIGNAL PROCESSING SYSTEMS NEURALNETWORKS FOR SIGNAL PROCESSING; VOL III: IMAGE & MULTIDIMENSIONAL SIGNAL PROCESSING MULTIMEDIA SIGNAL PROCESSING - VOL IV: SIGNAL PROCESSING FOR COMMUNICATIONS; VOL V: SIGNAL PROCESSING EDUCATION SENSOR ARRAY & MULTICHANNEL SIGNAL PROCESSING AUDIO & ELECTROACOUSTICS; VOL VI: SIGNAL PROCESSING THEORY & METHODS STUDENT FORUM | 2001年
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D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
This paper describes techniques to change the playback speed of MPEG-compressed audio, without first decompressing the audio file. There are two primary contributions in this paper. 1) We describe three techniques to perform time-scale modification in the maximally decimated domain. 2) We show how to infer the output of the auditory masking model on the new audio stream, using the information in the original file. This new FastMPEG algorithm is more than an order of magnitude more efficient than decompressing the audio, performing time-scale modification in the conventional time-domain, and recompressing. Samples of our results can be found at http://www.slancy.org/covell/Fast-MPEG/.
引用
收藏
页码：3261 / 3264
页数：4
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