Paper Info
Title
Dual-Mode Avq Coding Based On Spectral Masking And Sparseness Detection For Itu-T G.711.1/G.722 Super-Wideband Extensions
Abstract
ITU-T Recommendations G.711.1 Annex D and G.722 Annex B, which are super-wideband (50-14,000 Hz) extensions to G.711.1 and G.722, have been recently standardized. This paper introduces a new coding method proposed and employed in the above ITU-T standards. The proposed coding method employs an adaptive spectral masking of the algebraic vector quantization (AVQ) for MDCT-domain non-sparse signals. The adaptive spectral masking is switched on and off based on MDCT-domain sparseness analysis. When the target MDCT coefficients are categorized as non-sparse, masking level of the target MDCT coefficients is adaptively controlled using spectral envelope information. The performance of the proposed method as a part of the ITU-T G.711.1 Annex D is evaluated in comparison with the ordinary AVQ. Subjective listening test results show that the proposed method improves the sound quality more than 0.1 points with a five grade scale in average of speech, music and mixed content, and the significance of the improvement is validated.
Year
Venue
Keywords
2011
12TH ANNUAL CONFERENCE OF THE INTERNATIONAL SPEECH COMMUNICATION ASSOCIATION 2011 (INTERSPEECH 2011), VOLS 1-5
speech and audio coding, Standardization, ITU-T G.711.1 Annex D, ITU-T G.722 Annex B, super-wideband extension, algebraic vector quantization
Field
DocType
Citations 
Wideband,Masking (art),Pattern recognition,Computer science,Speech recognition,Coding (social sciences),Artificial intelligence,G.722
Conference
0
PageRank 
References 
Authors
0.34
1
5
Name
Order
Citations
PageRank
Masahiro Fukui14214.57
Shigeaki Sasaki2112.54
Yusuke Hiwasaki35211.63
Sachiko Kurihara4153.38
Yoichi Haneda59720.16