The process of removing background noises from a signal so that speech can be better understood. Noise reduction is one of the advanced features in today’s digital hearing aids.
The efficiency and means at which noise reduction is achieved will vary from hearing aid manufacturer to manufacturer. In general, the more advanced the noise reduction algorithm is in the hearing aid, the more advanced the hearing aid is said to be.
The goal of noise reduction is to increase the signal-to-noise of the sound, so that speech can be heard better in noisy environments.