| 1 | Nasal and corresponding same spot plosive, affricate and lateral sound vibrato combination nose crown sound initial consonant (20). | |
| 2 | Lateral sound: A lateral sound requires the air stream coming through the narrow channels on both sides of the tongue rather than through the center of the oral cavity. | |
| 3 | From the statistics got from the acoustic experiment and the phonetic map, the author thinks the voiceless( or unaspirated) of nasal and lateral are two different articulation manners. | |
| 4 | The preface does a brief review of consonants, nasals and laterals, introduces the corpus source and experimental design, voice annotation and data treatment, information of pronunciation partners. |