Ravi K. Chivukula

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In this paper, an efficient algorithm for implementing MDCT/IMDCT of lengths 5 2 m N = ⋅ (2 m ≥) is presented. Transforms for such lengths are of interest for speech and audio coding applications, such as recently issued and/or emerging standards G.729.1, G.EV-VBR, and EVRC-WB. In our design we utilize a mapping of MDCT of size N into N/2-point DCT-IV and(More)
The MPEG committee has completed development of a new audio coding standard called "MPEG-4 advanced audio coding-enhanced low delay" (AAC-ELD). AAC-ELD uses low delay spectral band replication (LD-SBR) technology together with a low delay time domain alias cancellation (LD TDAC) filterbank in the encoder to achieve both high coding efficiency and low(More)
The MPEG committee has recently finished development of a new audio coding standard " MPEG-4 Advanced Audio Coding-Enhanced Low Delay " (AAC-ELD). AAC-ELD is targeted towards high quality, full-duplex communication applications such as audio and video conferencing. AAC-ELD uses Spectral Band Replication (SBR) technology together with a low delay AAC core(More)
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