Mobile telephone with adaptive loudspeaker volume regulation dependent on measured signal level of acoustic input signals

摘要

The mobile telephone (1) has a microphone (2) for reception of acoustic input signals (10) and a loudspeaker (6) for provision of acoustic output signals (15), with measurement of the signal level of the acoustic input signals for corresponding adjustment of the volume level of the acoustic output signals, e.g. by adjusting the amplification factor of a variable amplifier under control of a fuzzy logic (4). An Independent claim for a method for adjusting the volume of acoustic output signals at a mobile telephone is also included.