Adaptive selection of lag-window shape for linear predictive analysis in the 3GPP EVS codec

Kamamoto, Yutaka; Moriya, Takehiro; Harada, Noboru

doi:10.1109/globalsip.2015.7418244

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…The results of the evaluations indicated that EVS outperformed conventional speech and audio coding schemes in terms of quality [5]. NTT used a similar procedure to conduct listening tests on Japanese materials [6]. The results of the tests confirmed the superiority of EVS over the coding schemes for conventional mobile communications systems.…”

Section: Gpp Evs Codec For Mobile Communicationsmentioning

confidence: 91%

Transmission of High-quality Sound via Networks Using Speech/Audio Codecs

Kamamoto,

Moriya,

Harada

2016

NTT Technical Review

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This article describes two recent advances in speech and audio codecs. One is EVS (Enhanced Voice Service), the new standard by 3GPP (3rd Generation Partnership Project) for speech codecs, which is capable of transmitting speech signals, music, and even the ambient sound on the speaker's side. This codec has been adopted in a new VoLTE (voice over Long-Term Evolution) service with enhanced highdefinition voice (HD+), which provides us with clearer and more natural conversations than conventional telephony services such as with fixed-line/land-line and 3G mobile phones. The other is MPEG-4 Audio Lossless Coding (ALS) standardized by the Moving Picture Experts Group (MPEG), which makes it possible to transmit studio-quality audio content to the home. ALS is expected to be used by some broadcasters, including IPTV (Internet protocol television) companies, in their broadcasts in the near future.

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Section: Gpp Evs Codec For Mobile Communicationsmentioning

confidence: 91%

Transmission of High-quality Sound via Networks Using Speech/Audio Codecs

Kamamoto,

Moriya,

Harada

2016

NTT Technical Review

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Progress in Speech and Audio Coding

Moriya

Kamamoto

Harada

et al. 2017

IEICE Fundamentals Review

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Progress in speech and audio coding is presented, focusing on the technology of linear predictive coding (LPC), which has played important roles in various processing schemes for speech and audio signals in general. From the first, LPC has been used for speech synthesis and telephone bandwidth speech coding, since it was found to be well suited to represent the characteristics of the vocal tract. In contrast, typical audio coding schemes have not used LPC. However, because of the needs of a low bitrate and the unification of speech and audio coding, LPC has come to be used for representing spectral information in audio coding as well. In line with this trend, two new standard coding schemes are introduced: audio lossless coding, MPEG-4 ALS, for digital broadcasting, and 3GPP EVS for recent cellular telephones.

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Adaptive selection of lag-window shape for linear predictive analysis in the 3GPP EVS codec

Cited by 2 publications

References 13 publications

Transmission of High-quality Sound via Networks Using Speech/Audio Codecs

Transmission of High-quality Sound via Networks Using Speech/Audio Codecs

Progress in Speech and Audio Coding

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