Vocal tremor analysis with the Vocal Demodulator.
Vocal tremor analysis with the Vocal Demodulator.
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使用声音解调器进行声音震颤分析。
DOI：
10.1044/jshr.3503.562
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
Ramig,LO
中科院分区：
文献类型：
--
作者：
Winholtz,WS;Ramig,LO
发声颤动的声学分析对发声障碍的研究具有重要的定量和诊断作用。本文介绍了一种新的发声震颤分析装置。声音解调器产生幅度和频率解调的输出，并测量持续发声中低频颤动分量的频率和水平(百分比)。一个标准的麦克风被用来转换输入到解调器的语音信号。输入基频范围为70~1200赫兹，幅频解调的频率响应为2.5~25赫兹。实时显示五个参数：FO、调幅频率、调幅电平、调频频率和调频电平。验证、校准和可靠性数据来自具有调制的合成测试信号，以及来自声音颤动受试者、产生颤音的受试者和正常嗓音受试者的发声。对该装置的研究和临床应用提出了建议。
Acoustic analysis of vocal tremor has the potential to make significant quantitative and diagnostic contributions to the study of vocal disorders. This paper presents a new device for analysis of vocal tremor. The Vocal Demodulator produces amplitude- and frequency-demodulated outputs and measures the frequency and level (percent) of low-frequency tremor components in sustained phonation. A standard microphone is used to transduce the voice signal for input to the demodulator. The input fundamental frequency (Fo) range is 70–1200 Hz, and frequency response of the amplitude and frequency demodulation is 2.5–25 Hz. Five parameters are displayed in real time: Fo, amplitude-modulation frequency, amplitude-modulation level, frequency-modulation frequency, and frequency-modulation level. Validation, calibration, and reliability data from synthesized test signals with modulation, as well as phonation from subjects with vocal tremor, subjects producing vibrato, and subjects with normal voice are presented. Research and clinical applications of this device are suggested.