公开(公告)号：US09368103B2

公开(公告)日：2016-06-14

申请号：US14418680

申请日：2013-07-30

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Tomoyasu Nakano ,  Masataka Goto

IPC: G10L25/90 ,  G10L13/02 ,  G10L25/18 ,  G10L25/45 ,  G10L25/15 ,  G10L25/78 ,  G10L21/013 ,  G10L19/022

CPC classification number: G10L13/02 ,  G10L19/022 ,  G10L21/013 ,  G10L25/15 ,  G10L25/18 ,  G10L25/45 ,  G10L25/78 ,  G10L25/90 ,  G10L2025/906

Abstract: For high-accuracy analysis and high-quality synthesis of voice sound (singing and speech), provided herein are a system and a method for estimating from an audio signal spectral envelopes and group delays for sound analysis and synthesis with high accuracy and high temporal resolution. An estimation system of spectral envelopes and group delays includes a fundamental frequency estimation section, an amplitude spectrum acquisition section, a group delay extraction section, a spectral envelope integration section, and a group delay integration section. The spectral envelope integration section sequentially obtains a spectral envelope for sound synthesis by averaging overlapped spectra. The group delay integration section selects from a plurality of group delays a group delay corresponding to the maximum envelope of each frequency component of the spectral envelope and integrates groups delays thus selected to sequentially obtain a group delay for sound synthesis.

Abstract translation: 对于高精度分析和语音（歌唱和语音）的高质量合成，本文提供了一种用于从音频信号估计频谱包络和组延迟的系统和方法，用于具有高精度和高时间分辨率的声音分析和合成 。 频谱包络和组延迟的估计系统包括基频估计部分，幅度频谱获取部分，组延迟提取部分，频谱包络积分部分和组延迟积分部分。 频谱包络积分部分通过平均重叠频谱顺序地获得声音合成的频谱包络。 组延迟积分部从多个组延迟中选择与频谱包络的​​每个频率分量的最大包络相对应的组延迟，并且对由此选择的组延迟进行积分，以顺序地获得用于声音合成的组延迟。