1 research outputs found
Modulation frequency domain adaptive gain equalizer using convex optimization
Adaptive gain equalizer (AGE) is a commonly used
single-channel speech enhancement algorithm. AGE and its
variants has been widely used for speech enhancement applications.
There are two broad categories of these variants. The
first deals with its improvement in time-frequency domain with
readjustment of the used parameters and the second one deals with performing
the main filtering operation in modulation frequency domain. This paper
evaluates the working of AGE in modulation frequency domain with the use of a
demodulation technique which solves the demodulation process as a convex
optimization problem. The performance of the modified AGE is compared with the
traditional AGE and another modulation frequency domain AGE based on
demodulation using the spectral center-of-gravity. These used performance
measures are Signal to Noise Ratio Improvement(SNRI), Spectral Distortion(SD)
and
Mean Option Score(MOS)