Sound signal synthesis method, generative model training method, sound signal synthesis system, and recording medium

A computer-implemented method of training a generative model comprising:

• preparing pitch data that represents a pitch of a sound signal;
• and
• training the generative model to generate output data representing the sound signal based on the pitch data,
• wherein the pitch data includes a plurality of pieces of pitch notation data corresponding to pitch names, and
• wherein the pitch data is prepared by setting, from among the plurality of pieces of pitch notation data, a piece of pitch notation data that corresponds to the pitch of the sound signal as a hot value based on a difference between a reference pitch of a pitch name corresponding to the piece of pitch notation data and the pitch of the sound signal.

A sound signal synthesis system comprising:

• one or more memories configured to store a generative model that has learned a relationship between second pitch data indicative of a pitch of a second sound signal and the second sound signal;
• and
• one or more processors configured to:
• generate first pitch data indicative of a pitch of a first sound signal to be synthesized;
• and
• estimate output data indicative of the first sound signal by inputting the first pitch data into the generative model,
• wherein the first pitch data includes a plurality of pieces of pitch notation data corresponding to pitch names, and
• wherein the first pitch data is generated by setting, from among the plurality of pieces of first pitch notation data, a piece of pitch notation data that corresponds to the pitch of the first sound signal as a hot value based on a difference between a reference pitch of a pitch name corresponding to the piece of first pitch notation data and the pitch of the first sound signal.

A non-transitory computer-readable recording medium storing a program executable by a computer to perform a sound signal synthesis method, the sound signal synthesis method comprising:

• generating first pitch data indicative of a pitch of a first sound signal to be synthesized;
• and
• using a generative model to estimate output data indicative of the first sound signal based on the generated first pitch data,
• wherein the generative model has been trained to learn a relationship between second pitch data indicative of a pitch of a second sound signal and the second sound signal,
• wherein the first pitch data includes a plurality of pieces of pitch notation data corresponding to pitch names, and
• wherein the first pitch data is generated by setting, from among the plurality of pieces of pitch notation data, a first piece of pitch notation data that corresponds to the pitch of the first sound signal as a hot value based on a difference between a reference pitch of a pitch name corresponding to the first piece of pitch notation data and the pitch of the first sound signal.