Speech processing

A technique for enhancing speech signal captured in a noisy environment is provided. According an example embodiment, the technique comprises obtaining a current time frame of a noise-suppressed voice signal, derived on basis of a current time frame of a source audio signal comprising a source voice signal, detecting input voice characteristics for the current time frame of noise-suppressed voice signal, obtaining reference voice characteristics for said current time frame, said reference voice characteristics being descriptive of the source voice signal in noise-free or low-noise environment, and creating a current time frame of a modified voice signal by modifying said current time frame of the noise-suppressed voice signal in response to a difference between the detected input voice characteristic and the reference voice characteristics exceeding a predetermined threshold.