Accurate spectral envelope estimation for articulation-to-speech synthesis
Accurate spectral envelope estimation for articulation-to-speech synthesis
复制标题
用于发音合成的准确频谱包络估计
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
Simon King
中科院分区：
文献类型：
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作者：
Y. Shiga;Simon King
本文介绍了一种新颖的发音声学映射，其中基于倒谱估计详细的频谱包络，包括在传统语音合成中为了消除语音的音调分量而被丢弃的高频元素。对于这种估计，该方法处理多个有声语音频谱的谐波，以便可以在不同的基音频率处获得多组谐波以形成频谱包络。实验结果表明，当倒谱阶数为48-64时，该方法以最高的精度估计频谱包络，这表明需要更高阶的系数来表示反映真实声道响应的详细包络。
This paper introduces a novel articulatory-acoustic mapping in which detailed spectral envelopes are estimated based on the cepstrum, inclusive of the high-quefrency elements which are discarded in conventional speech synthesis to eliminate the pitch component of speech. For this estimation, the method deals with the harmonics of multiple voiced-speech spectra so that several sets of harmonics can be obtained at various pitch frequencies to form a spectral envelope. The experimental result shows that the method estimates spectral envelopes with the highest accuracy when the cepstral order is 48-64, which suggests that the higherorder coefficients are required to represent detailed envelopes reflecting the real vocal-tract responses.