Proceedings ArticleDOI
A novel scheme for SVAC audio encoder
Ruo Shu,Shuyan Ding,Shibao Li,Jianhang Liu +3 more
- pp 531-534
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TLDR
A novel scheme is proposed in which speech coding module based on Algebraic Code Excited Linear Prediction (ACELP) is removed completely and speech waveforms can be reconstructed from MFCCs in decoding and this greatly simplifies the structure of SVAC.Abstract:
In the audio encoder of Surveillance Video and Audio Coding (SVAC), both audio signals and MEL-frequency cepstral coefficients (MFCCs) are coded and this leads to high computational complexity. This paper proposes a novel scheme for SVAC in which speech coding module based on Algebraic Code Excited Linear Prediction (ACELP) is removed completely and speech waveforms can be reconstructed from MFCCs in decoding. The novel scheme greatly simplifies the structure of SVAC and also has a high performance for decoded speech signals in quality evaluation.read more
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Low Bit-Rate Speech Coding Through Quantization of Mel-Frequency Cepstral Coefficients
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Proceedings ArticleDOI
Hybrid Scalar/Vector Quantization of Mel-Frequency Cepstral Coefficients for Low Bit-Rate Coding of Speech
TL;DR: The results show perceptual evaluation of speech quality (PESQ) of the MFCC-based codec matches the state-of-the-art MELPe codec at 600 bps and exceeds the CELP codec at 2000 -- 4000 bps coding rates.