| 摘要 |
PURPOSE:To obtain a phase meter capable of easily sensing phase difference, by displaying the phase difference between sound signals in a state classified into a same phase and an inverse phase by color. CONSTITUTION:Same phase and inverse phase levels are detected by a first differential amplifier 1 and a second differential amplifier 2 receiving inputs of a left channel 23 and a right channel 24 and, in the case of the same phase and the same level, levels and responses are processed through various circuits to drive a green light emitting diode 22. In the case of the inverse phase same level, a red light emitting diode 21 is driven in the same way. When the inputs of the left channel 23 and the right channel 24 are zero, the green light emitting diode 22 is driven. Therefore, phase difference can be easily sensed. |
