Thesis Title: Identification of Control Parameters In An Articulatory Vocal Tract Model With Applications To the Synthesis of Singing
Outlines, notes, thoughts, on Perry Cook's disseration on Singing Synthesis in 1991.
"The synthesis fo singing is investigated using an articulatory model which simulates the human vocal tract as a network of digital filter simulations of acoustic tubes"
(Love that succient definition).
Presents methods for finding vocal tract shapes.
A "new method for adaptively tracking vocal tract shape" from an input signal.
Glottal signal information is explored as well.
Some choice bits.
"flexible synthesis of music"
digital filters simulate the "solutions of wave equations inside acoustic tubes"
"perturbations in the source signal are the primary focus of the experimental research presented in this dissertation"
"computers most easily make irritating and boring sounds"
"such systems sound like machines imitating speech"
Part 1: Synthesis of the Singing Voice
There are many differences between speech and singing. A bullet list of about 10 such differences are presented, with source citations.
TODO Fourier Model of Speech and Singing
TODO Formant Based Models
TODO Source/Filter Models
TODO Derivation of a Digital Simulation of the Acoustic Tube
TODO The Periodic Glottal Source
TODO Sources of Noise in the Vocal Tract
TODO Identification of Filter and Source Control Parameters
Part 2: Identification of Glottal Source Deviations
TODO Pitch Deviation in the Voice Source
TODO A Study of Singer Jitter and Drift
TODO Rules for synthesis of Jitter and Drift
TODO Spectral Deviation in the Voice
TODO Pulsed Noise in the Glottis
TODO Methods of Extract of Non-Periodic Part of Glottal Waveform
TODO Methods for Analysis
TODO Extensions and Similar Methods
TODO Male Singing Voice Extraction and Analysis Examples
TODO A study of the noise characteristics of singers
TODO Subharmonics in the Singing Voice
TODO Use of Noise Residual for Vocal Tract Filter Identification
TODO Pulsed Noise in Other Musical Systems
Part 3: Software Systems For Singing Synthesis
The Synthesis Model
The meat of this is a block diagram on page 123. There are some words which accompany this. Might be worth including here.
TODO The SPASM system
TODO The Singer Software Synthesis System
Part 4: Conclusions and Suggestions for Future Research
TBD. May read this bit first, actually.