| 摘要 |
PURPOSE:To prevent omission by converting outputs of two bidirectional microphones and a non-directional microphone by a matrix device and reproduc ing them by plural speakers. CONSTITUTION:Outputs of two bidirectional microphones 101 and 103 and a non-directional microphone 102 are converted by a matrix device 105 and are reproduced by plural speakers 111, 112, 113, and 114 to not only prevent omission but also cope with the reproducing system of three front channels and one rear channel. Further, signals are compressed to two channels by a channel number compressing device 106 to record signals on a conventional two-channel recorder, and this recorded two-channel signal is restored to signals of the original number of channels by a channel number expanding device 108. |
