Electronic musical instrument, electronic musical instrument control method, and storage medium

A method of controlling an electronic musical instrument that includes an operation unit that receives a user performance and at least one processor, the method comprising, via the at least one processor:

• in accordance with a user operation on the operation unit, obtaining lyric data and waveform data corresponding to a first tone color;
• inputting the obtained lyric data to a trained model that has been trained and learned singing voices of a singer so as to cause the trained model to output acoustic feature data in response thereto;
• generating waveform data corresponding to a singing voice of the singer and corresponding to a second tone color that is different from the first tone color, based on the acoustic feature data outputted from the trained model and the obtained waveform data corresponding to the first tone color;
• and
• outputting a singing voice based on the generated waveform data corresponding to the second tone color.

A non-transitory computer-readable storage medium having stored thereon a program executable by at least one processor in an electronic musical instrument that includes, in addition to the at least one processor, an operation unit that receives a user performance, the program causing the at least one processor to perform the following:

• in accordance with a user operation on the operation unit, obtaining lyric data and waveform data corresponding to a first tone color;
• inputting the obtained lyric data to a trained model that has been trained and learned singing voices of a singer so as to cause the trained model to output acoustic feature data in response thereto;
• generating waveform data corresponding to a singing voice of the singer and corresponding to a second tone color that is different from the first tone color, based on the acoustic feature data outputted from the trained model and the obtained waveform data corresponding to the first tone color;
• and
• outputting a singing voice based on the generated waveform data corresponding to the second tone color.