1. A method comprising: receiving, by a device that includes one or more processors, a speech signal; determining acoustic feature parameters for the speech signal, wherein the acoustic feature parameters include phase data; determining circular space representations for the phase data based on an alignment of the phase data with given axes of the circular space representations; mapping, based on the circular space representations, the phase data to linguistic features associated with linguistic content that includes phonemic content or text content; and providing, based on the mapping, a synthetic audio pronunciation of the linguistic content.