Zexin Liu — accepted AI-conference papers

2015

Advances in low bitrate time-frequency coding

Tommy Vaillancourt, Vladimir Malenovsky, Redwan Salami, Zexin Liu, Lei Miao, Jon Gibbs +1

ICASSP 2015accepted

In this paper a novel technique is presented to efficiently mix traditional ACELP time domain coding with a frequency domain coding model to improve the quality of generic audio signals coded at low bitrates without additional delay. The paper discusses how to integrate parts of a traditional Algebr…

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2015

Low bit rate high-quality MDCT audio coding of the 3GPP EVS standard

Srikanth Nagisetty, Zongxian Liu, Takuya Kawashima, Hiroyuki Ehara, Xuan Zhou, Bin Wang +9

ICASSP 2015accepted

This paper presents a low bit-rate MDCT coder, which is adopted as a part of the recently standardized codec for Enhanced Voice Services. To maximize codec performance for NB to SWB input signals for low bit-rates (7.2 to 16.4 kbps), new adaptive bit-allocation and spectrum quantization schemes, whi…

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