SPAC(自己相関関数を利用した音声処理方式)の雑音低減の効果

概要

論文の詳細を見る
Noise stripping of speech signal is an important topic for maintaining the stable speech communication circuit. SPAC(Speech Processing system by use of Auto Correlation function)skillfully utilizing the nature of correlation function is considered effective for this purpose. This paper treats at the signal to noise ratio from -10 to 10dB. A simulation of SPAC reveals that the noise level reduction and improvement in the signal to noise ratio are successfully made. The quality of speech processed by SPAC is evaluated by hearing tests such as a pair comparison test, an opinion test of five categories and a syllable articulation test. It is shown that SPAC is subjectively effective for noise level reduction though no improvement in the articulation score is achieved.
社団法人日本音響学会の論文
1979-07-01