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关于使用TPA3001功放的问题



我用TPA3001做音频信号的功放,但是输出的声音很沙哑,之前公司用过这款芯片,我的电路图没有改变,但是声音不正常。我用示波器测量所有的引脚的波形跟正常的一样,但是声音是沙哑的