MPEG-4 parametric audio coding and its implementation

Author

Heng-Ming Tai

Author_Institution

Dept. of Electr. Eng., Tulsa Univ., OK

Volume

2

fYear

1999

fDate

1999

Firstpage

762

Abstract

Audio coding at very low bit rates requires very efficient evaluation of characteristics of the signal sources and of perceptual properties of the human ear. MPEG-4 aims to provide an audio-visual coding standard for very low bit rate channel, such as those found in Internet, mobile, and multimedia applications. MPEG-4 audio coding schemes consist of the parametric, CELP and time/frequency coding algorithms. This paper describes the parametric audio coding scheme and its implementation on a DSP

Keywords

audio coding; codecs; digital signal processing chips; CELP coding algorithms; DSP; HILN decoder; Internet; MPEG-4 parametric audio coding; audio-visual coding standard; harmonic and individual line plus noise decoder; human ear; mobile applications; multimedia applications; parametric audio coding scheme; parametric coding algorithms; perceptual properties; signal sources; time/frequency coding algorithms; very low bit rate channel; very low bit rates; Audio coding; Bit rate; Decoding; Digital signal processing; Frequency; Internet; MPEG 4 Standard; Scalability; Speech coding; Speech synthesis;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 1999. IECON '99 Proceedings. The 25th Annual Conference of the IEEE

Conference_Location

San Jose, CA

Print_ISBN

0-7803-5735-3

Type

conf

DOI

10.1109/IECON.1999.816496

Filename

816496