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音频信号处理电路 该机的音频信号处理电路主要由输入信号切换及处理电路、数字音频解码电路、音频信号均衡及功放电路几部分组成。 1.输入信号切换及处理电路 这部分电路以AV切换电路IC3001和音频信号处理电路IC2001为主构成,电路流程如图5所示。主高频调谐器输出的电视音频信号先直接送到IC2001的60脚,经IC2001内电路处理后,分离出左右声道伴音信号由IC2001的36、37脚输出,
Audio signal processing circuit The machine’s audio signal processing circuit is mainly composed of the input signal switching and processing circuit, digital audio decoding circuit, audio signal equalization and power amplifier circuit. 1. Input signal switching and processing circuit This part of the circuit to AV switching circuit IC3001 and audio signal processing circuit IC2001 consisting mainly of the circuit shown in Figure 5. The main high-frequency tuner output TV audio signal directly to the IC2001’s 60-pin, after IC2001 internal circuit processing, the left and right channel sound signals separated by IC2001 36,37 feet output,