Multiplexed predictive coding of speech

Author

Andersen, Søren Vang ; Kubin, Gernot

Author_Institution

Dept. of Speech, Music, & Hearing, R. Inst. of Technol., Stockholm, Sweden

Volume

2

fYear

2001

fDate

2001

Firstpage

741

Abstract

We present a novel method for predictive coding with application to transmission of speech over packet-switched networks. Our method uses multiplexing to distribute a part of the information about a segment of each speech signal in several data packets while keeping the data packet rate and payload for that part of the information unchanged. We investigate three multiplexing schemes: a packet hopping, a Hadamard multiplexing, and an extension of the Hadamard multiplexing that exploits a nonlinear preprocessing and estimation method. We show by means of formal AB-preference tests that multiplexed predictive coding can lead to coders that are more robust to packet losses than scalar quantization and packet loss concealment according to the G.711 standard

Keywords

adaptive codes; filtering theory; integrated voice/data communication; nonlinear estimation; packet switching; prediction theory; quantisation (signal); speech coding; G.711 standard; Hadamard multiplexing; IP traffic; coding algorithms; data packet rate; estimation method; extended Hadamard multiplexing; filter-bank coders; formal AB-preference tests; multiplexed predictive speech coding; nonlinear estimation; nonlinear preprocessing; packet hopping; packet loss concealment; packet-switched networks; perceptual weighting; prediction synthesis filter; scalar predictive speech coders; scalar quantization; segmental signal-to-noise ratio; speech signal segment; speech transmission; transmission errors; Degradation; Payloads; Predictive coding; Propagation losses; Protocols; Quantization; Robustness; Signal processing; Speech coding; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on

Conference_Location

Salt Lake City, UT

ISSN

1520-6149

Print_ISBN

0-7803-7041-4

Type

conf

DOI

10.1109/ICASSP.2001.941021

Filename

941021