On the Physiology of Voice Production in South-Siberian Throat Singing: Analysis of Acoustic and Electrophysiological Evidences

Acknowledgements
Preface
Overview
Symbols, Abbreviations and Transliteration
INTRODUCTION
	Subject Context
	Throat Singing (ThS)
	Overtone Singing (OtS)
	Theoretical Context Of Voice Description
		Perspectives, Layers and Definitions
		Principles of Phonation
		Voice Production -- Source and Vocal Tract
		Voice Quality (VQ)
	Research Goals
SUBJECT
	Physiological & Acoustical Correlates of ThS Phonatory Qualities
		Styles in South-Siberian Throat Singing -- Ethnomusicological vs. Phonetic Perspective
		Physiological Phonetics of Throat Singing
		Voice Sources in Throat Singing
		Vocal Tract in Throat Singing
	Specific Anatomy of Certain Laryngeal Structures
		Basic Functional Anatomy of the Larynx
		Ventricular Fold and Ventricular Voice
		Aryepiglottic Fold (plica aryepiglottica)
		Aryepiglottic Sphincter (AES)
	Physical Examination of the Lower Vocal Tract in Throat Singing
		Preliminary Laryngoscopic Examination of Throat Singing
		Additional Recordings of Fibre Endoscopic Examination of Throat Singing
	Vocal Tract Shape Investigations -- Articulation of ``Reinforced Harmonics'' in Throat Singing
		Observable Techniques or Methods of ``Overtone Articulation''
		Phonation Modes and Articulation Types in Throat Singing
		Physical Observations on Singers
		Investigations using X-ray Videofluoroscopy
		Investigations using Ultrasound
		MRI Investigation
	Discussion of VPTs and Laryngeal Settings in Throat Singing
		Posterior-Anterior Compression, Supraglottal Constriction
		Ventricular Fold Mechanism (VTF) -- Medial Compression of Supraglottal Constriction
		Double Source Phonation or Diplophonic Phonation
		Discussion of Vocal Tract Articulation
	HYPOTHESES & Expectations
METHOD -- Physioacoustical Analysis of Voice Production in ThS
	Preliminary Considerations -- Why do we need field data of ThS?
	Specific Non-Invasive Methodology for Voice Investigation in Field Work
		Field Work within Voice Research
		Field Conditions in Southern Siberia
		Invasivity, Manageability, and Costs
		3-Channel-Recording of Voice, EGG, and Subglottal Pressure (Inverse Filtering)
		Subject Recruitment
		Subject Tasks and Raw Data Corpus Description
	Voice (Source) Analysis Design
		Preparation and Data Pre-Analysis
		Physio-Acoustic Analysis Methods
RESULTS
	Analysis and Findings in the Voice Signal (Vx)
		Vx-signal Corpus Description
		Vx Waveform Shapes and Patterns
		Vx Waveform Perturbations
		Formants, Bandwidths and Reinforced Harmonics
		Glottal Characteristics in the spectra (H1-H2, H1-A1, H1-A3 etc.)
		Average Spectral Characteristics
		Findings in Inverse Filtering Curves
	Analysis and Findings for Lx
		Sub-Corpus Description
		Findings in EGG and DEGG Wave Shapes (incl. Gx)
		Periods Obtained by Lx Measurement
		Jitter of the Lx Signal
		Shimmer of the Lx Signal
		EGG Quotients -- Analysis and Findings
	Analysis and Findings for the Subglottal Pressure Wave Signal (Sx)
		Sub-Corpus Description
		Coordination of Vx, Lx and Sx
		Sx vs. Vx Waveform Comparison
		Spectral Analysis of Sx
	Additional Observations
		Air Flow in Different VPT
		Aryepiglottic Sphincter Constriction (MV  AESV) in Lx
		Variations in kargyraa (VTF-V, AEF-VF, etc.)
	DISCUSSION
		Interrelations and Correlations Between Measures
		Possible Voice Production Types
		Similarities to Other Pathological and Non-pathological Voice Patterns
SUMMARY
	Macrostructure and Microstructure of ThS
	Are Throat Singers High-Risk Vocal Performers?
	Perspectives
TABLES, DIAGRAMs & SCRIPTS
	Tables
		Descriptive Statistics
		Normal Distribution Tests
		Nonparametric Rank Test
		Tables of Correlation Analysis
	Diagrams and Plots
		Descriptive Plots and Diagrams
		Spectra and Spectrograms
		Waveform and Waterfall Plots
	Scripts
		Script 1: Formants, Bandwidths, Harmonics
		Script 2: Obtaining Jitter, Shimmer, HNR, NHR, etc.
		Script 3: Vx, Lx, Inverse Filtering of Vx, EGG-Quotients
		Script 4: Cascading Waveforms
REFERENCES
	Glossary
	Analysed Recordings
		Audio-CDs
		Broadcasts [B] & Documentaries[F]
		Field Recordings [FR] and Archive Material [AR]
	Subjects
	Bibliography