| 摘要 |
<p>PROBLEM TO BE SOLVED: To comfortably perform speaking in small voice without the sense of incompatibility by presetting appropriate level control information into a storage means corresponding to respective plural environments and performing the level control of respective volume control parts and respective noise canceler function parts on the side of transmission and reception for each utilization environment. SOLUTION: The level control information is previously set and registered into a memory 6 for each utilization environment. A control part 1 reads every level control information corresponding to the utilization environment inputted by a user from the memory 6 and controls the respective levels of reception volume control part 2, transmission volume control part 3 and noise canceler function parts 4 and 5. On the side of transmission, the voice inputted from a microphone MC is processed into respective levels by the transmission volume control part 3 and the noise canceler function part 4, modulated by a transmission part TX and transmitted from an antenna AT. On the side of reception, the signal received by the antenna AT is demodulated, processed into respective levels by the reception volume control part 2 and the noise canceler function part 5 and outputted from a speaker SP.</p> |
