the paper by Plumpe says: alpha=factor that determines ratio of Ee to peak height of the GFW. However, the alpha turns negative and is very small to model the open phase in GFW.
Also wo=pi/tg, where tg=time elapsed between zero crossing and Te, i.e., (Te-zcr), but this too doesnt model the Glottal flow well.
Hi, Tanvina! I advise you to see Fant (1960, 1979) papers. They give you more information about GFW modeling. These papers are available at KTH site.
Best regards!
The german PhD Thesis from my colleague is to my knowledge covering exactly this topic. However, it is in german, but you may be able to get some information from it using google translate or similar (e.g. the name of the work was correctly translated by google as: "Simultaneous inverse filtering and estimation of the glottal flow of acoustic voice signals")
Simultane Inversfilterung und Schätzung des glottalen Flusses aus akustischen Stimmsignalen
Fröhlich, Matthias
Doctoral thesis
Date of Examination: 1999-11-01
Date of issue: 2001-11-07
Advisor: Schroeder, M. R. Prof. Dr.
Referee: Ronneberger, Dirk Prof. Dr.
(pdf file is attached)
Dirk Michaelis, thank you for your efforts.. However, it seems a tough task to read the thesis in German. I'll try tough.
Antonio Pessott, I have been going through Fant's work, however, I think i am missing something. The model parameter is not being estimated properly.
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