1. A method of synthesizing speech from text, the method comprising: representing the text as a sequence of formant model states; generating an excitation signal for each formant model state; determining at least one formant path over the sequence of formant model states based on a formant model for each formant model state; and passing each excitation signal through a resonator having characteristics that are based on a formant along a formant path and aligned with the respective formant model state of each excitation signal.