Cross spectral measurement of head related speech transfer functions using speaker’s own voice
Cross spectral measurement of head related speech transfer functions using speaker’s own voice
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使用说话者自己的声音进行头部相关语音传递函数的交叉频谱测量
DOI：
10.1121/1.4779377
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
Hideki Kawahara
中科院分区：
文献类型：
--
作者：
Masumi Nukina;Hideki Kawahara
交叉频谱方法被应用于使用说话人自己的语音来测量头部周围的声压变化。这些变化被表示为从嘴部参考点到一组测量点的传递函数。初步测试表明，元音的颜色有系统性的频率响应变化。这种元音颜色依赖关系在J.L.弗拉纳根对语音辐射特性的经典测量中没有被复制。然而，考虑到很大(有时超过20分贝)的变化量，它不太可能被忽略。引入了一套校准和归一化过程，以减少由于背景噪声、房间声学、语音频谱中的零点而产生的伪影。还使用头部和躯干模拟器进行了一系列基于M序列的传递函数测量，以评估交叉光谱测量中的固有误差。结果表明，用该方法进行交叉光谱测量的标准误差较小。
A cross spectrum method is applied to measure sound pressure variations around the head using the speaker’s own speech sounds. The variations are represented as transfer functions from the mouth reference point to a set of measuring points. Preliminary tests indicated that there are systematic frequency response variations depending on vowel colors. This vowel color dependency was not replicated in the classical measurement of speech radiation characteristics by J. L. Flanagan. However, taking into account the large (sometimes exceeding 20 dB) amount of variations, it is not likely to be negligible. A set of calibration and normalization procedures were introduced to reduce artifacts due to background noise, room acoustics, zeros in the speech spectra. A series of M‐sequence based transfer function measurements were also conducted using a head and torso simulator to evaluate intrinsic errors in the cross spectral measurements. It was found that the standard errors in the cross spectral measurements using ...