A battery-powered digital acoustic device designed to provide noise of sufficient intensity and bandwidth to mask (make less noticeable and provide temporary relief from) tinnitus (a ringing sound in the ear or internal head noises). It typically consists of a miniature sound generator, contained in a case that fits completely inside the outer ear (concha) [in-the-ear (ITE)], that delivers the noise to the eardrum through air. The microphone in some types may measure the level of the background noise and adjust accordingly the masking signal. The digital design of the device allows for the introduction of new tinnitus masking software programs.
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