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Digital signal processing allows new technical features to be implemented in the field of audio, like for instance reduction of the stored or transmitted audio data by utilizing the masking effects of the ear (MPEG). To achieve the desired perception, signals can be modified accordingly with the aid of digital signal processing. This may be obtained for instance with effect processors and declickers in the studio as well as with intelligent hearing aids, in which the gain is varied either frequency-selectively or depending on the type of signal.
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