Disclosed is a system for automatic time alignment of a music audio signal and song lyrics that can increase alignment precision over that of the past. A fricative-free segment extraction unit (4) extracts segments in which there are no fricatives from the music audio signal. An alignment unit (17) is equipped with a vocal audio model (15) that estimates phonemes corresponding to characteristic quantities for time alignment. The alignment unit (17) takes the characteristic quantities for time alignment obtained from a time-alignment characteristic quantity extraction unit (11), information related to vocal segments and non-vocal segments obtained from a vocal segment estimator (9), and a phoneme network (SN) as inputs and executes an alignment operation under at least the condition that no phonemes are present in non-vocal segments and the condition that no fricative phonemes are present in segments in which fricatives do not exist.
SYSTEM AND METHOD FOR AUTOMATIC TIME ALIGNMENT OF MUSIC AUDIO SIGNAL AND SONG LYRICS