A stand-alone DSP-based real time implementation of the MPEG audio layer 2 algorithm

Author

Hong-Beng Yak ; Sua-Hong Neo ; Brefort, Andrea ; Rosinski, Klaus

Author_Institution

Asia Matsushita Elect. Pte Ltd., A/V Inf. Res. Centre, Singapore

fYear

1992

fDate

16-20 Nov 1992

Firstpage

770

Abstract

Presents a stand-alone real time DSP-based implementation of the ISO/MPEG (International Standards Organization/Moving Pictures Experts Group) audio layer 2 algorithm. Employing the AT&T DSP32C floating-point digital signal processor for the real time implementation, two DSPs are needed for the encoder and 1 DSP is needed for the decoder. The MPEG audio layer 2 algorithm can process audio signals up to 20 kHz bandwidth depending on the sampling frequency. At a total bitrate of 256 kbit/s per stereophonic channel (a compression ratio of 6 times), the quality demonstrated by the MPEG layer 2 audio algorithm is excellent

Keywords

audio signals; digital signal processing chips; real-time systems; telecommunication standards; 20 kHz; AT&T; DSP; DSP32C floating-point digital signal processor; ISO; MPEG; audio layer 2 algorithm; audio signals; bandwidth; compression ratio; decoder; encoder; real time implementation; stereophonic channel; Bandwidth; Decoding; Digital signal processing; Digital signal processors; ISO standards; MPEG standards; Signal processing; Signal processing algorithms; Signal sampling; Transform coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Singapore ICCS/ISITA '92. 'Communications on the Move'

Print_ISBN

0-7803-0803-4

Type

conf

DOI

10.1109/ICCS.1992.255159

Filename

255159