差分計算を用いた骨伝導音の明瞭化における量子化サイズの検討

抄録

This paper investigates the effects of quantization size for sound quality improvement on body-conducted speech using difference calculation. In former research, we proposed and evaluated that the sound quality improvement method using difference calculation and noise reduction method for body-conducted speech. However, the performance depends on the quantization size, because of the dynamic range of the sound. It was confirmed to achieve higher SNR than speech when quantization size was used by 16 bit and 24 bit.