SUPER-WIDEBAND BANDWIDTH EXTENSION FOR SPEECH IN THE 3GPP EVS CODEC

被引：0

作者：

Atti, Venkatraman ^{[1
]}

Krishnan, Venkatesh ^{[1
]}

Dewasurendra, Duminda ^{[1
]}

Chebiyyam, Venkata ^{[1
]}

Subasingha, Shaminda ^{[1
]}

Sinder, Daniel J. ^{[1
]}

Rajendran, Vivek ^{[1
]}

Varga, Imre ^{[1
]}

Gibbs, Jon ^{[2
]}

Miao, Lei ^{[2
]}

Grancharov, Volodya ^{[3
]}

Pobloth, Harald ^{[3
]}

机构：

[1] Qualcomm Technol Inc, San Diego, CA 92121 USA

[2] Huawei Technol Co Ltd, Shenzhen, Peoples R China

[3] Ericsson AB, Stockholm, Sweden

来源：

2015 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP) | 2015年

关键词：

3GPP EVS codec; low bitrate bandwidth extension; super-wideband; harmonic nonlinear extension; temporal envelope modulation; AUDIO CODING STANDARD;

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

This paper describes the time-domain bandwidth extension (TBE) framework employed to code wideband and super-wideband speech in the newly standardized 3GPP EVS codec. The TBE algorithm uses a nonlinear harmonic modeling technique that incorporates principles of time-domain envelope-modulated noise mixing. At 13.2 kbps, the super-wideband coding of speech uses as low as 1.55 kbps for encoding the spectral content from 6.4-14.4 kHz. Subjective evaluation results from ITU-T P.800 Mean Opinion Score (MOS) tests are provided, showing significantly improved quality compared to the other standardized SWB codecs under both clean speech and speech with background noise.

引用

页码：5927 / 5931

页数：5

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