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PCM5242: 输出有噪声

Part Number: PCM5242
Other Parts Discussed in Thread: TPA6120A2

Hi

Team,客户反馈:使用PCM5242,当喇叭输出最大音量时伴有“沙,沙”低噪音,爆破音很大

功放前端4通道波形信号1khz时很完美,功放后端失真披锋较多,看情况应该是后端问题,请问有没有什么建议?