If you record a sound file in an environment that contains background noise then it is inevitable that your audio will be partly contaminated by the noise. You can use the Audacity audio-editing application to eliminate a buzzing noise or any other unwanted noise from an audio track. To eliminate buzzing, first direct Audacity to analyse a part of the track that contains only the buzzing noise. Then use the application to eliminate that noise from the entire sound file.
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Run Audacity and open the audio file that contains the buzzing noise.
Click and drag to select a portion of the audio file that contains the buzzing noise but doesn't contain any other sound.
Click the "Effect" heading in the menu bar, then click "Noise Removal" in the menu.
Click "Get Profile." The application determines the audio structure of the buzzing sound.
Hold the CTRL button and press A to select the entire audio file.
Click the "Effect" heading in the menu bar then click "Noise Removal."
Click the "Remove Noise" button. Audacity eliminates the buzzing noise from the audio file.
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