Advanced Mode

For hum noise that is harder to remove, the advanced mode lets you select a region of the audio that contains the hum so CyberLink AudioDirector can detect it. Once detected, you can then customize its removal using a series of parameters.

In Advance Mode, do this:

1.In step 1, do one of the following:
Select the first option and then select a range of the audio that only contains the hum you want to remove, i.e. devoid of the audio you want to keep in the file. See Range Selection for more information on selecting a range of an audio file. Next, click the Analyze button to analyze the range of audio. Doing this creates a noise profile that CyberLink AudioDirector uses to remove the hum.

Note: you can click the Hum button to listen to the detected noise, if required.

Select the second option and then Select a preset from the drop-down. Select the preset that best fits the frequency of the hum you are trying to remove.
2.If required, use the following sliders to further remove the hum from the audio:
Base frequency: use this slider to manually specify the root note of the hum noise, if the detected hum is incorrect.
Reduction level: use this slider to set the amount of attenuation applied on the hum noise.
Number of harmonics: select the number of harmonics the hum noise appears to have.
Filter bandwidth: use this slider determine the width of the root frequency and its harmonics. Dragging the slider left affects a wider range of frequencies, while dragging it right will affect a narrower range.
Harmonic slope: use this slider to set the ratio of attenuation applied to the harmonics.
3.Click the Next button to go to step 2.
4.Select which range of audio you want to apply the hum removal to by selecting one of the following:
Selected range only: select this option to only apply the hum removal to the range of audio you selected and analyzed in step 1.
Entire audio content: select this option if you want to apply the hum removal to the entire audio clip.
Select a different range: select this option to select a new range of audio where you want the hum removal applied. This range can contain both the hum and the audio content you want to keep.
5.If required, you can preview the repaired audio by selecting Restored result and then clicking the Preview button. Select Original audio if you want to play the original audio.

Note: click the Save as Preset button once you are done to save the Hum Removal settings as a new preset. The next time you need to remove hum noise from audio that was recorded in the same or similar environment, you can just select the preset from the drop-down in step 1.

6.Click Apply to repair the audio.