Title :
MPEG-4 parametric audio coding and its implementation
Author_Institution :
Dept. of Electr. Eng., Tulsa Univ., OK
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;
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
DOI :
10.1109/IECON.1999.816496
