Patent ID: 9659571
Date: 2017-05-23
CPC Classifications: G08B,G10L,H04R

Claim:
1. A system for emitting an audio signal in an environment, the system comprising: an audio source for providing the audio signal, at least one loudspeaker for emitting the audio signal, at least one microphone for receiving an acoustic signal from the environment, whereby the acoustic signal is based on the audio signal and may comprise disturbing components, an analyzing module for analyzing the acoustic signal and for providing an intelligibility measure from an objective intelligibility measure method whereby the intelligibility measure is used as a feedback signal, an automatic volume control having a control loop and that controls the volume or the energy of the audio signal emitted by the at least one loudspeaker using the intelligibility measure as the feedback signal in the control loop, and repeating module that repeats the audio signal in case the intelligibility measure is worse than a pre-defined value or threshold.