A method for measuring modulation transmission in speech transmitted via a nonlinear channel

The paper presents a method for measuring the transmission of speech transmitted through a channel with linear or nonlinear distortion and arbitrary noise. The method is a generalization of the well-established method of measuring speech intelligibility using modulation transmission function, but instead of measuring only the amount of the modulation in the received signal and comparing it against the amount of modulation in the transmitted signals in given carrier and modulation frequency band, the proposed method cross-correlates the envelopes of the transmitted and received signal.