- 语音学 yǔyīnxué phoneticsthe study of the sounds of human speech, including their production and classification; phonology
- 发音学 fāyīnxué phoneticsthe study of the production and classification of speech sounds
- 国际语音学字母 guójìyǔyīnxuézìmǔ International Phonetic Alphabetsystem of phonetic notation based on the Latin alphabet to represent the sounds of spoken languages
- 万国语音学字母 wànguóyǔyīnxuézìmǔ International Phonetic Alphabetsystem of phonetic notation based on the Latin alphabet to represent the sounds of spoken languages
- 音学五书 yīnxuéwǔshū Five Books on PhonologyMajor Qing dynasty phonology work by [[顾炎武|顧炎武|gu4 yan2 wu3]] in thirty-eight volumes; it established the foundation for ancient Chinese phonology studies by analyzing the rhyme systems of the "Classic of Poetry" and "I Ching" while correcting the "Tang Rhymes".
- 实验语音学 shíyànyǔyīnxué experimental phoneticsScientific study of the physical and physiological properties of speech sounds using laboratory experiments and specialized instruments; specialized equipment; founded in the late 19th century, it is used to analyze phonetic details that cannot be distinguished by hearing alone, such as the difference between voiced and voiceless sounds.