Radio telecommunication terminal

DETAILED DESCRIPTION The object of the invention is therefore to alleviate the above drawbacks.
The invention consists in a cordless or mobile telephone terminal generating a ringing signal or a voice signal at a level which prevents acoustic shock.
The invention also concerns a compact low-cost mobile radio terminal.
To this end, the invention proposes a mobile radio terminal including an audio transducer providing earpiece and loudspeaker functions and an outlet of which is oriented towards the front face of the terminal, characterized in that the audio transducer additionally provides a ringer function and in that the terminal further includes, coupled to the transducer, means for adjusting the level of the sound wave emitted by the transducer in a main direction substantially perpendicular to the front face, the adjustment being effected regardless of the position of the terminal relative to a user and so that said level is sufficient for distant use of the terminal and less than a predetermined value for close use.
In a first embodiment of the terminal the adjustment means include: means for measuring a parameter representative of the degree of masking of the transducer, and means for determining the level of the sound wave that the transducer must produce given the measurement effected by the measuring means.
In a first variant the means for measuring a parameter representative of the degree of masking of the transducer comprise means for measuring the attenuation of background noise picked up by the microphone of the terminal.
In a second variant the means for measuring a parameter representative of the degree of masking of the transducer comprise means for measuring the impedance of the transducer.
In a second embodiment of the terminal the adjustment means include a guide member for the sound wave comprising a guide wall in which at least one guide hole is formed, the guide member being rigidly coupled to the front face of the terminal so that the guide hole faces the outlet of the transducer to limit the level of the sound wave emitted in the main direction and the guide wall and the front face of the terminal form a diversion channel for at least part of the sound wave in a secondary direction different to the main direction