ITU-T G.EV-VBR baseline codec

Jelinek, Milan; Vaillancourt, Tommy; Ertan, Ali Erdem; Stachurski, Jacek; Rämö, Anssi; Laaksonen, Laura; Gibbs, Jon; Bruhn, Stefan

doi:10.1109/icassp.2008.4518718

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Cited by 11 publications

(1 citation statement)

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“…However, the original EV-VBR baseline codec [6], which is closer to the development configuration used in this work, has a total algorithmic delay of 54.75 ms. This difference is mainly due to the window length used in the overlap-add operation in the transform coder.…”

Section: Codec Overviewmentioning

confidence: 99%

Scalable superwideband extension for wideband coding

Tammi

Laaksonen

Rämö

et al. 2009

2009 IEEE International Conference on Acoustics, Speech and Signal Processing

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Recent trends in speech and audio codec standardization include scalability and extending the signal bandwidth beyond wideband (WB) to superwideband (SWB). In this paper we introduce a SWB extension for the ITU-T G.718 WB codec. In the SWB extension the high frequency content is generated utilizing the quantized MDCT domain coefficients of the WB core, which enables low additional delay. The proposed implementation is scalable with 4 kbps layers. In the first layer two different coding modes are used depending on the input signal type. The proposed SWB extension is evaluated with listening tests and complexity analysis.

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Section: Codec Overviewmentioning

confidence: 99%