ABSTRACT
Complex sounds exhibit fluctuations of amplitude and frequency. This paper reviews a model of auditory processing of simultaneous amplitude and frequency modulations derived from studies of Voelcker’s elementary modulated signals. A digital computer simulation of the model using the discrete Hilbert transform indicates its usefulness in understanding the perception of more complex sounds. Applying the model to the complex sounds used in “auditory profile analysis” studies predicts a consistent pitch difference between sounds thought to be discriminable only because of small spectral-envelope differences.
