In the field of audio, it refers specifically to signal leakage between the output of one source and the input of another source.
This phenomenon can occur on the stage, such as the drum sound or hum signal into the guitar amplifier microphone, etc., can also occur in the studio, for example, the singer's headphone output signal into the vocal microphone and so on. In general, in order to avoid the above leakage phenomenon, people will take the following measures: use a cardioid or supercardioid microphone to effectively shield signals from other directions; use the noise gate to attenuate the sensitivity of the microphone to prevent it from capturing the outside. Noise; optimize the gain stage of the mixer and peripherals used to maintain a reasonable signal-to-noise ratio level, and so on.
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