A fundamental frequency estimation method for noisy speech based on instantaneous amplitude and frequency
A fundamental frequency estimation method for noisy speech based on instantaneous amplitude and frequency
复制标题
一种基于瞬时幅值和频率的含噪语音基频估计方法
DOI：
10.21437/eurospeech.2001-575
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
M. Akagi
中科院分区：
文献类型：
--
作者：
Y. Ishimoto;M. Unoki;M. Akagi
本文提出了一种鲁棒准确的含噪语音F0估计方法。该方法采用两种不同的原理：(1)基于瞬时振幅的周期性和谐波性的F0估计，用于噪声环境下的鲁棒估计；(2)基于瞬时频率稳定性的F0估计，用于精确估计。该方法还采用带可控通带的梳状滤波器将两种估计方法结合起来。通过仿真对噪声环境下真实语音的F0s进行了估计，并与其他方法进行了比较。结果表明，该方法不仅能够以与仅使用瞬时频率的方法相似的精度估计干净语音的F0s，而且与倒谱法等其他方法相比，对含噪语音的F0s也具有鲁棒性。
This paper proposes a robust and accurate F0 estimation method for noisy speech. This method uses two different principles: (1) an F0 estimation based on periodicity and harmonicity of instantaneous amplitude for a robust estimation in noisy environments, and (2) an F0 estimation based on stability of instantaneous frequency as an accurate estimation method. The proposed method also uses a comb filter with controllable pass-bands to combine the two estimation methods. Simulations were carried out to estimate F0s from real speech in noisy environments and to compare the proposed method with other meth-ods. The results showed that this method can not only estimate F0s for clean speech with similar accuracy as the method us-ing only instantaneous frequency but also robustly estimate F0s from noisy speech in comparison with the other methods such as the cepstrum method.