Measurement of the Glottal Pulses
M. M. Sondhi · The Journal of the Acoustical Society of America · 1974
The glottal pulse shape is usually estimated either by inverse-filtering the speech wave or by taking a motion picture of the vocal cord vibration. We present a much simpler alternative based on the following idea: The effect of the vocal tract resonances on the glottal pulse is considerably reduced by speaking into a reflectionless uniform tube. If, in addition, the tract is held in a neutral position, the effect is almost entirely eliminated and the glottal pulse may be recorded by a microphone in the uniform tube. A number of examples are presented of glottal pulses recorded in this manner. Results of spectral analysis of these pulses are also presented.