Adaptively Reducing Noise While Limiting Speech Loss Distortion

摘要

The present technology provides adaptive noise reduction of an acoustic signal using a sophisticated level of control to balance the tradeoff between speech loss distortion and noise reduction. The energy level of a noise component in a sub-band signal of the acoustic signal is reduced based on an estimated signal-to-noise ratio of the sub-band signal, and further on an estimated threshold level of speech distortion in the sub-band signal. In various embodiments, the energy level of the noise component in the sub-band signal may be reduced to no less than a residual noise target level. Such a target level may be defined as a level at which the noise component ceases to be perceptible.

主权项

1. A method for reducing noise within an acoustic signal, comprising:
separating, via at least one computer hardware processor, an acoustic signal into a plurality of sub-band signals, the acoustic signal representing at least one captured sound; and reducing an energy level of a noise component in a sub-band signal in the plurality of sub-band signals, the reducing based on an estimated threshold level of speech loss distortion in the sub-band signal.