| 摘要 |
PURPOSE:To control an output of an omnidirectional acoustic device in accordance with a direction of a detected other station, so that a receiving person can listen to contents of communication from a direction where the other station exists, by incorporating a direction finder, and the circular acoustic device which is capable of generating a voice output with directivity to the receiving person. CONSTITUTION:A titled equipment consists of a direction finder 1 for detecting a radio wave arrival direction from the other station at the time of a communication exchange by radio, a sound field generating part 3 for adjusting suitably the amplitude and phase of a receiving signal demodulated by a receiver 2 of a radio communication equipment in accordance with its detected direction, an amplifying part 4 for amplifying its sound field generating signal so as to become a moderate sound volume level, and an omnidirectional acoustic device 5 consisting of plural loudspeakers SP provided in the circumference of a receiving person O in a car chamber. By constituting in this way, a level and a phase of a voice outputted from each loudspeaker SP is adjusted, respectively, in accordance with a radio wave arrival direction from the other station, therefore, the receiving person O feels as if the voice is heard from a direction where the other station exists. |
