音声学. The physical properties of the sounds of Japanese. Divided into articulatory phonetics (how the sounds are produced physically), auditory phonetics (the physical sounds we're able to hear physically), and acoustic phonetics (the measurement and analysis of the sound waves produced in human speech). Please put phonetic transcriptions in [square brackets].
Phonetics describes the physical properties of a language's sounds. Distinguished from phonology, or "phonemics", which is concerned with the underlying abstract mental representation of sounds.