Psychoacoustics: Facts and Models
Psychoacoustics: Facts and Models
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In this paper, we propose an algorithm which enhances the speech intelligibility using the properties of human auditory system. In previous algorithms related to the speech intelligibility, the improvement in intelligibility has been mostly incorporated in a single-channel environment where the speech and noise signals are mixed together. But the speech enhancement problem of dual channel, in which the speech signal is separated from noise, has been rarely treated. This paper introduces the dual-channel speech enhancement algorithm which enhances the intelligibility by reinforcing speech before it is mixed with noise. To enhance the speech intelligibility, we use the masking phenomenon of the human auditory system. The proposed algorithm has been tested by the subjective experiment which resulted in improved results over the automatic gain control algorithm.