Vector Quantization (VQ)
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چکیده
The important point about VQ is that, we require reproduction vectors (instead of reproduction levels) that are known by the encpder and the decoder. The encoder takes an input vector, determines the best representing reproduction vector, and transmits the index of that vector. The decoder takes that index, and forms the reproduction vector because it already knows the reproduction vectors instead of the original. Consider the following figure:
منابع مشابه
Using FFI Interpolator and VQ Quantization for Designing of High Quality 1200 BPS Speech Vocoder
Storaging or transmission of speech signals at very low bit rate is a hot area in the field of speech processing. We used stochastic inter-frame interpolators and vector quantization (VQ) as a new method for developing a high quality 1200 BPS speech vocoder. The objective and subjecgtive test results show that performance of the new vocoder is compairable with 4800 BPS standard vocoders (as CELP).
متن کاملUsing FFI Interpolator and VQ Quantization for Designing of High Quality 1200 BPS Speech Vocoder
Storaging or transmission of speech signals at very low bit rate is a hot area in the field of speech processing. We used stochastic inter-frame interpolators and vector quantization (VQ) as a new method for developing a high quality 1200 BPS speech vocoder. The objective and subjecgtive test results show that performance of the new vocoder is compairable with 4800 BPS standard vocoders (as CELP).
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