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Super-Wideband Fine Spectrum Quantization for Low-rate High-Quality MDCT Coding Mode of The 3GPP EVS Codec

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Citation Author(s):
Srikanth Nagisetty
Hiroyuki Ehara, Takuya Kawashima, Lasse Laaksonen, Hosang Sung, Kihyun Choo
Submitted by:
Srikanth Nagisetty
Last updated:
23 February 2016 - 1:44pm
Document Type:
Presentation Slides
Document Year:
2015
Event:
GlobalSIP 2015
Presenters:
Srikanth Nagisetty
Categories:
Speech Coding (SPE-CODI)
 

This article presents a low bit-rate super wideband MDCT coder, which is adopted as a part of the recently standardized codec for Enhanced Voice Services. To maximize codec performance at 13.2 kbps, existing algorithms are reviewed and several new tools are introduced into the low bit-rate MDCT coder to improve the performance of the coder while coding music and mixed content. A subjective listening test demonstrates the advantage of the proposed system for 13.2 kbps when compared to AMR-WB+.

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