A new inverse-filtering technique for deriving the glottal air flow waveform during voicing.
A new inverse-filtering technique for deriving the glottal air flow waveform during voicing.
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一种新的逆滤波技术，用于导出发声期间的声门气流波形。
DOI：
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发表时间：
1970
影响因子：
2.4
通讯作者：
M. Rothenberg
中科院分区：
文献类型：
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作者：
M. Rothenberg
描述了一种用于通过对嘴部处的体积速度波形进行逆滤波来导出浊音语音期间声门处的体积速度波形的方法。与以前使用的反向滤波辐射声压技术不同，该方法提供的信号精确到零频率，不易受低频噪声影响，并且易于通过恒定气流进行幅度校准。主要的限制是需要一个传感器，将测量体积速度在口具有足够的保真度。在这项工作中，体积速度记录从一个专门设计的圆周通风丝网呼吸速度描记器面具，提供了1/2毫秒的时间分辨率，没有严重的语音失真。记录两名成年男性受试者的反向滤波体积速度，用于在模态寄存器中发声。文中给出了典型的结果，表明声门波形随基频、声门下压和声窗尺寸的变化而变化的方式。
A method is described for deriving the volume velocity waveform at the glottis during voiced speech by inverse‐filtering the volume velocity waveform at the mouth. Unlike the previously used technique of inverse‐filtering radiated acoustic pressure, this method provides a signal that is accurate down to zero frequency, not susceptible to low‐frequency noise, and easily calibrated in amplitude by a constant air flow. The primary limitation is the need for a transducer that will measure volume velocity at the mouth with adequate fidelity. In this work, volume velocity was recorded from a specially designed circumferentially vented wire screen pneumotachograph mask which provided a time resolution of 1/2 msec, without serious speech distortion. Inverse‐filtered volume velocity was recorded with two adult male subjects for voicing in the modal register. Typical results are shown which indicate the way in which the glottal waveform varied with changes of fundamental frequency, subglottal pressure, and a dimens...