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  • Type 44AA

    The Mouth Simulator Type 44AA is a sound source which simulates the sound field around the human mouth at close quarters and complies with the Standards IEEE 269, 661 and ITU-T Rec. P51.

  • Type 44AB

    The Mouth Simulator Type 44AB is a sound source which simulates the sound field around the human mouth at close quarters and complies with the Standards IEEE 269, 661 and ITU-T Rec. P51.