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本文介绍的高音音调控制电路如附图所示。该装置可用于音响设备作步进式高音音调调节。IC1～IC3、串联网络R1～R11、C1、c2和S1～S3组成高音音调控制电路。IC3的电压增益由R12和R13以及R2～R9的接入与否决定。开关S1的作用如表1所示。当S1拨至A档时,高音提升;当S1拨至B档时,高音衰减。当S2拨至A档时,接入高音音调控制器输出端;当S2拨至B档时,高音输入信号直接输出。开关S3的作用如表2所示。
This article describes the pitch control circuit as shown in the figure. The device can be used for audio treble pitch treble adjustment. IC1 ~ IC3, the series network R1 ~ R11, C1, c2 and S1 ~ S3 composed of treble tone control circuit. The voltage gain of IC3 is decided by the access of R12 and R13 and R2 ~ R9. The role of switch S1 is shown in Table 1. When S1 dial to A file, the treble enhances; when S1 dial B file, treble attenuation. When S2 dial to A file, access to the treble tone controller output; when S2 dial to B file, the treble input signal directly. Switch S3’s role as shown in Table 2.