If a signal has a lot of hiss and noise in stereo but is quiet in mono, multipath is usually the cause. (Low signal strength or interference can cause similar symptoms.

• 如果信号有很多嘘声和噪声在立体音响但是安静在单音,多重通道的通常是起因。(低信号强度或干涉可能导致相似的症状。