LIST OF TABLES
1.1   Languages spoken in Bhutan                                    7
2.1   Consonant phonemes (Mazaudon 1985)                            16
2.2   Consonant phonemes (Mazaudon & Michailovsky 1988)             17
2.3   Consonant phonemes (Van Driem 1992)                           18
2.4   Consonant phonemes (Watters 2002)                             19
2.5   Dzongkha consonant phonemes                                   23
2.6   Formant (F1, F2 and F3) frequencies for Dzongkha vowels       34
2.7   Classification of Dzongkha vowels                             36
2.8   Dzongkha vowel length contrast in open monosyllabic words     37
2.9   Dzongkha vowel length contrast in closed monosyllabic words   37
2.10 Dzongkha vowel nasalization contrast                           38
2.11 length contrast in nasalized vowels                            38
2.12 Dzongkha diphthongs                                            39
2.13 Dzongkha vowel phonemes                                        40
3.1   English voiced stop phonation                                 49
3.2   Hindi breathy stop phonation                                  50
3.3   Creaky nasal phonation in Kwakw'a1a                           51
3.4   Glottal stop contrast in Lawa                                 51
3.5   Glottal stop contrast in Ao                                   51
3.6   Tense stop contrast in Korean                                 52
3.7   Stop inventories of some modem Tibeto-Burman languages        56
3.8   Average VOT values of stop phonation types                    60
3.9   Average stop burst energy of Dzongkha stops                   63
3.10 Mean closure duration of stops                                 66
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3.11 Manipulated FO of Dzongkha stops                                 78
3.12 Interaction of acoustic correlates for Dzongkha stops            93
3. I 3 Dzongkha fricative duration                                    101
3.14 Comparison of acoustic cues in Dzongkha and Korean               108
4.1   Phonemic contrast of sonorants in Dzongkha, Mizo and Tenyidie   117
4.2   Typology of nasals and laterals in Tibeto-Burrnan languages     122
4.3   Nasal duration in Dzongkha                                      129
4.4   Nasal duration in Mizo                                          133
4.5   Mean duration of laterals in Dzongkha                           138
4.6   Duration of laterals in Mizo                                    141
5.1   Significance of phonetic pitch contour                          183
5.2   Vowel length of 'quarrel', 'east', 'paddy' and 'summer'         188
5.3   Pitch height significance in the high register                  191
5.4   Pitch height significance in the low register                   193
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