The Hum Removal feature removes hum noise and its harmonics from audio clips. Hum noise is usually caused by electronics (faulty microphone, electrical interference with recording device, etc.) during the original recording.
To use Hum Removal on audio, do this:
1. | Select the media file in the library that you want to repair. |
2. | If required, use range selection to select the portion of audio you want to repair. See Range Selection for more information on selecting a range of an audio file. If you don't select a range, the entire audio clip is repaired. |

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Note: the entire audio file's waveform is selected by default when this feature is opened. If you want to apply this feature to the entire audio file, you do not need to use range selection when the entire waveform is selected.
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3. | Decide whether you want to repair all the available channels, or just one channel. See Selecting Channels for Editing for more information on selecting channels. |
4. | Click Hum Removal to open the Hum Removal window. |
5. | Select one of the following options: |
• | Simple Mode: select this option if you want CyberLink AudioDirector to remove the hum using a selected frequency range band. See Simple Mode for more information. |
• | Advanced Mode: select this option to use the more advanced controls. CyberLink AudioDirector asks you to manually select an area that contains the hum, then through analysis helps you remove it from your audio. See Advanced Mode for more information. |
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