Parameterisation Methods of the Glottal Flow Estimated by Inverse Filtering
نویسنده
چکیده
Estimation of the source of voiced speech, the glottal volume velocity waveform, with inverse filtering involves usually a parameterisation stage, where the obtained flow waveforms are expressed in numerical forms. This stage of the voice source analysis, the parameterisation of the glottal flow, is discussed in the present paper. The paper aims to give a review on the different methods developed for the parameterisation and it discusses how these parameters have reflected function of the voice source in various voice production studies.
منابع مشابه
Voice source analysis using biomechanical modeling and glottal inverse filtering
This paper studies the use of glottal inverse filtering together with a biomechanical model of the vocal folds to simulate the glottal flow waveform. The glottal flow waveform is first estimated by inverse filtering the acoustic speech pressure signal of natural speech. The estimated glottal flow is used as a template in an optimization process which searches for a set of parameters for a deter...
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Glottal flows and sound pressure waveforms of four different fundamental frequencies were generated using a computational model of vocal fold vibration and acoustic wave propagation in order to evaluate the performance of an inverse filtering method. Four time-based parameters of the glottal flow were used in order to assess the accuracy of the inverse filtering technique. The results show that...
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SUMMARY Inverse filtering (IF) is a common method used to estimate the source of voiced speech, the glottal flow. This investigation aims to compare two IF methods: one manual and the other semiautomatic. Glottal flows were estimated from speech pressure waveforms of six female and seven male subjects producing sustained vole /a/ in breathy, normal, and pressed phonation. The closing phase char...
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