Abstract
The glottal function was obtained through the use of a reflectionless tube. This tube acted as a pseudoinfinite termination of the vocal tract. Male and female speakers phonated a neutral vowel while target matching to a 125- and 210-Hz tone, respectively. The glottal waveform was digitized at 1 000 samples per second with a resolution of 12 bits. Each cycle was partitioned at an interpolated zero-crossing. This procedure provided an accurate determination of the period of each glottal pulse. The spectral content of each individual cycle was determined by discrete Fourier analysis. The amplitude and phase of the first 20 harmonics were determined for each cycle. These harmonics were utilized to determine separate perturbation values, as well as an overall amplitude measure. The data showed a systematic change in the spectral character of the sustained vowel source signal. Spectral perturbation analysis may be a more inclusive measure of waveshape changes than jitter or shimmer.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
