Voice production model based on phonation biophysics

Abstract This paper presents a proposal to source-filter theory of voice production, more precisely related voiced sounds. It is model generate signal using linear and time-invariant systems takes into account the phonation biophysics cyclostationary characteristics signal, vibrational behavior vocal cords. The suggests that oscillation frequency cords function its mass length, but controlled by longitudinal tension applied them. mathematical description glottal excitation presented, along with closed expression for power spectral density excites glottis. whose parameters can be adjusted detection classification glottis pathologies, also present. As result, output each block diagram represents proposed analysed, including comparison between emulated voice, original classic model. Log Spectral Distortion computed, providing values below 1.40 dB, indicating an acceptable distortion all cases.