.PHO ファイル拡張子

Audio data file used by MBROLA, a speech synthesizer used for generating speech audio in multiple languages; contains a list of phonemes, which are the basic audible units of speech, as well as the duration for each phenome; used for generating .WAV, .MP3, or other audio files with human speech.

注: PHO files themselves are not playable audio files, since they only contain the data required to generate human speech audio when input into MBROLA.