The effect of phase information in speech enhancement and speech recognition
The effect of phase information in speech enhancement and speech recognition
复制标题
相位信息在语音增强和语音识别中的作用
DOI：
10.1109/isspa.2012.6310533
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
H. Sameti
中科院分区：
文献类型：
--
作者：
Mahsa Sadat Elyasi Langarani;H. Veisi;H. Sameti
大多数语音增强方法在谱域中进行噪声去除，并从估计的干净语音的幅度和含噪语音的相位构建增强的语音信号。在本文中，我们表明，通过将相位信息的增强过程中，语音信号的质量和可懂度的改善。本文采用最小均方误差短时谱幅度和MMSE对数谱幅度方法对语音信号进行幅度谱估计。通过进行六类实验，结果表明，通过考虑相位信息，整体SNR和PESQ措施得到改善。在其他实验中，语音增强系统的结果被馈送到语音识别系统中，并且示出通过结合准确的相位信息，语音信号的可懂度得到改善。
The majority of speech enhancement methods perform noise removal in spectral domain and construct the enhanced speech signal from the estimated magnitude of clean speech and the phase of the noisy speech. In this paper, we show that by incorporating the phase information in the enhancement process, the quality and intelligibility of speech signal are improved. In our investigations, the minimum mean-square error short-time spectral amplitude and MMSE log-spectral amplitude methods are used to estimate the magnitude spectrum of speech signal. By conducting six classes of experiments, it is shown that by taking the phase information into account, overall SNR and PESQ measures are improved. In other experiments, the results of speech enhancement system are fed into a speech recognition system and it is shown that by incorporating accurate phase information, the intelligibility of the speech signal is improved.
DOI：
10.1109/tassp.1984.1164453
发表时间：
1984-01-01
期刊：
IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING
影响因子：
--
作者：
EPHRAIM, Y;MALAH, D
通讯作者：
MALAH, D