noun
phonetic symbols
Technical term in linguistics referring to symbols that represent speech sounds, such as those in the International Phonetic Alphabet (IPA).
音声学では、音標文字を使って発音を正確に表記する。
In phonetics, phonetic symbols are used to accurately transcribe pronunciation.
発音記号 is a more common term for phonetic symbols, especially in language learning contexts, while 音標文字 is a more technical term used in linguistics.
Compound of 音 (sound), 標 (mark/sign), and 文字 (character/script). The exact historical derivation is uncertain, but the term is a calque or translation equivalent of 'phonetic symbol'.