The ISO/IEC MPEG-4 Audio standard includes the TwinVQ encoding tool. This tool is suitable for low-bit-rate general audio coding, but drawback is the computational complexity of the encoder. To develop a faster TwinVQ encoder, new fast vector quantization algorithms - area localized pre-selection and hit zone masking - are introduced. These algorithms exploit pre- and main-selection procedure scheme of the conjugate structure vector quantization which is used in the TwinVQ. The improvement is evaluated by measuring the encoding speed and the sound quality of reproduction.
|ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
|Published - 2001
|2001 IEEE International Conference on Acoustics, Speech, and Signal Processing - Salt Lake, UT, United States
継続期間: 2001 5月 7 → 2001 5月 11
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