Sound conversion method and sound conversion device

The invention provides a sound conversion method and a sound conversion device. The sound conversion method comprises the steps of pre-establishing a sound conversion model; receiving a sound signal of a source speaker and extracting the frequency spectrum characteristic of the sound signal; determining a sound conversion model which corresponds with the source speaker; and performing sound conversion according to the frequency spectrum characteristic and the sound conversion model which corresponds with the source speaker, thereby obtaining sound information of a target speaker. The sound conversion method can effectively improve sound conversion flexibility.