Implementing an audio multipoint processor on DSP array

Author

Haojun, Ai ; Ruiming, Hu

Author_Institution

Multimedia Network Commun. Eng. Inst., Wuhan Univ., China

fYear

2001

fDate

2001

Firstpage

441

Lastpage

444

Abstract

ITU-T H.323 covers the technical requirements for multimedia communications systems in those situations where the underlying transport is a packet based network. The multipoint control unit (MCU) provides the capability for three or more terminals and gateways to participate in a multipoint conference. The Multipoint processor (MP) provides for the centralized processing of audio, video, and/or data streams in a multipoint conference. The MP provides for the mixing, switching, or other processing of media streams under the control of the multipoint controller (MC). The authors have designed an audio MP based on DSP array for a multipoint conference. Many DSPs work in parallel, implementing a multichannel G.723.1 CODEC, so that many remote terminals can access the videoconference through a narrow-band network. It is a cost efficient solution

Keywords

array signal processing; audio signal processing; digital signal processing chips; multimedia communication; speech codecs; teleconferencing; DSP array; audio MP; audio multipoint processor; media streams; multichannel G.723.1 CODEC; multimedia communication; multipoint conference; multipoint control unit; multipoint controller; narrow-band network; narrow-band network. It is a cost efficient solution; packet based network; videoconference; Bit rate; Communication system control; Digital signal processing; Linear code; Local area networks; Multimedia communication; Multimedia systems; Speech; Streaming media; Videoconference;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Multimedia, Video and Speech Processing, 2001. Proceedings of 2001 International Symposium on

Conference_Location

Hong Kong

Print_ISBN

962-85766-2-3

Type

conf

DOI

10.1109/ISIMP.2001.925428

Filename

925428