1. When recording with adobe audition, take a few seconds to collect noise first, as shown in the red box in the figure.
If the recorded audio can be imported into the audition, find the time period with noise and buzz;
2, use the mouse to select this noisy, try not to contain human voices, such as the beginning of the recording, the white area in the picture;
3. Then click "Effect" in the menu bar and select "Noise Reduction (N)/ Recovery"-"Capture Noise Sample" to open a dialog box. Click OK.
4. Then select all audio time periods, click "Effect", select "Noise Reduction (N)/ Recovery" and click "Noise Reduction (Process)";
5. Then the dialog box of noise reduction settings will pop up, and the default settings can be used.
For example, in Bian Xiao, noise has been reduced by 80%. Finally, click Apply, and there will be a process of percentage noise reduction, which will take some time;
6. After the noise reduction is completed, play a few more times to see if there is any obvious noise.
Enlarging the audio band, we can see that the ripples in the original noise segment basically disappear, and the stage with ripples is our audio segment. Sometimes there may be some other noises, so we can get rid of them.