Receiver, method, program and carrier signal for adapting the sound volume of an acoustic signal of an incoming call

摘要

The invention relates to a communication receiver provided with a loudspeaker and/or a microphone and means for automatically adapting the volume of the loudspeaker and/or microphone according to the local acoustic environment of the receiver and in particular the degree of confinement of the environment. Confinement detection means are provided and comprise adaptive filtering means for modeling the acoustic channel of the receiver by means of the pulse response of an adaptive filter and calculation and comparison means for calculating a power ratio between a partial power and the total power of said pulse response to compare it with reference values and to derive therefrom an estimation of said degree of confinement. Application: Mobile telephony.