Parameterization of a computational physical model for glottal flow using inverse filtering and high-speed videoendoscopy
نویسندگان
چکیده
منابع مشابه
Exploiting glottal formant parameters for glottal inverse filtering and parameterization
It is crucial for many methods of inverse filtering that the time domain information of the glottal source waveform is known, e.g. the location of the instant of glottal closure. It is often the case that this information is unknown and/or cannot be determined due to e.g. recording conditions which can corrupt the phase spectrum. In these scenarios, alternative strategies are required. This pap...
متن کاملExperimental evaluation of inverse filtering using physical systems with known glottal flow and tract characteristics.
The technique presented here uses an impedance head to measure the input impedance spectrum of a physical model of a vocal tract, and then to inject a known glottal flow waveform into the tract. The sound measured outside the mouth is used to evaluate inverse filtering techniques by comparison with the known glottal flow and measured acoustical properties of the tract. The normalized least squa...
متن کاملParameterisation Methods of the Glottal Flow Estimated by Inverse Filtering
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 develop...
متن کاملInvestigating the relationship between glottal area waveform shape and harmonic magnitudes through computational modeling and laryngeal high-speed videoendoscopy
The glottal open quotient (OQ) is often associated with the amplitude of the first source harmonic relative to the second (H1*H2*), which is assumed to be one cause of a change in vocal quality along a breathy-to-pressed continuum. The association between OQ and H1*-H2* was investigated in a group of 5 human subjects and also in a computational voice production simulation. The simulation incorp...
متن کاملGlottal spectrum based inverse filtering
In this paper a new inverse filtering technique for the timedomain estimation of the glottal excitation is presented. This approach uses the DAP modeling for the vocal tract characterization, and a spectral model for the derivative of the glottal flow. This spectral model is based on the spectrum of the KLGLOTT88 model for the glottal source. The proposed procedure removes the glottal source fr...
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ژورنال
عنوان ژورنال: Speech Communication
سال: 2018
ISSN: 0167-6393
DOI: 10.1016/j.specom.2017.11.007