ITU-T G.719: A new low-complexity full-band (20 kHZ) audio coding standard for high-quality conversational applications

Author

Xie, Minjie ; Chu, Peter ; Taleb, Anisse ; Briand, Manuel

Author_Institution

Polycom, Inc., Burlington, MA, USA

fYear

2009

fDate

18-21 Oct. 2009

Firstpage

265

Lastpage

268

Abstract

This paper describes a new low-complexity full-band (20 kHz) audio coding algorithm which has been recently standardized by ITU-T as Recommendation G.719. The algorithm is designed to provide 20 Hz - 20 kHz audio bandwidth using a 48 kHz sample rate, operating at 32 - 128 kbps. This codec features very high audio quality and low computational complexity and is suitable for use in applications such as videoconferencing, teleconferencing, and streaming audio over the Internet. Subjective test results from the optimization/characterization phase of G.719 are also presented in the paper.

Keywords

audio coding; computational complexity; telecommunication standards; ITU-T G.719; Internet; Recommendation G.719; audio bandwidth; audio streaming; bandwidth 20 Hz to 20 kHz; bit rate 32 kbit/s to 128 kbit/s; high audio quality; high-quality conversational application; low computational complexity; low-complexity full-band audio coding standard; teleconferencing; videoconferencing; Acoustic signal processing; Audio coding; Bandwidth; Codecs; Computational complexity; Conferences; Quantization; Signal processing algorithms; Teleconferencing; Testing; Audio coding; adaptive time-frequency transform; fast lattice vector quantization; full-band; low complexity;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Signal Processing to Audio and Acoustics, 2009. WASPAA '09. IEEE Workshop on

Conference_Location

New Paltz, NY

ISSN

1931-1168

Print_ISBN

978-1-4244-3678-1

Electronic_ISBN

1931-1168

Type

conf

DOI

10.1109/ASPAA.2009.5346487

Filename

5346487