an audio tactile signage system for pedestrians, which is designed to be used in combination with an installation of traffic signals, includes a transducer (16) providing auditory and tactile signals using a signal generator (11, 12, 13, 14).the transducer is designed to provide a microphone signal to an automatic gain control circuit (19) for, in order to solve the noise level of the signal from the noise of traffic exposure.
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