| 摘要 |
PURPOSE:To identify sound from an individual speaker with simple constitution by fitting a diffuser at a position facing the speaker in front of the aperture attachably and detachably and giving a compensation circuit for output level and frequency characteristic to an amplifier of a channel. CONSTITUTION:The diffuser 3 is placed on the front face of the aperture B of the speaker unit fitted with a speaker 1 and fitted at a distance (g) from the front face of the speaker unit 2 to the top of the diffuser 3 so that the diffuser faces the speaker 1 and its center axis l2 is made coincident with the center axis l1 of the speaker 1. The speaker 1 is driven individually by the output of the amplifier of plural channels. The amplifier includes the compensation circuit compensating the output level and the frequency characteristic at each channel. |
