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      This app reduce background noise and pick up wanted speech sounds, using your smartphone's microphone.

      This advanced version of the Bio Aid app. It includes the same functions as the the Bio Aid, but you can also choose how you want to filter the sound. For example, you can choose which ear you would prefer the sound in, and what level and pitch you want the sound in.

      Aud1 is currently only available on iOS. It costs £4.99.

      Learn more and download Aud1