Removing Sound Above/Below Envelope

[Tazzman29]

Hey everyone,

I have a voice recording that I’m trying to edit to get ride of a “crackle.” I noticed this happens when the recording volume goes above and below the “envelope” line. I’m wondering if there is a tool I can utilize that deletes those sections so all the audio that’s left is the ones between the envelope lines thus removing the “crackle.” I can provide a picture of what I mean if needed.

[DVDdoug]

It might help to see a picture and/or if you can attach a short audio clip.

I have a voice recording that I’m trying to edit to get ride of a “crackle.” I noticed this happens when the recording volume goes above

It’s normal to get [u]clipping[/u] (distortion) when you try to go over 0dB and it’s best to prevent it by keeping your levels below clipping because the information is permanently lost. There is a Clip Fix effect, and that might help to some extent.

and below the “envelope” line.

Are you hearing the crackle with silence? At low levels the issue is usually noise (rather than distortion) simply because at higher levels the noise is drowned out (a better signal-to-noise ratio). There is a Noise Reduction effect (filter) and a there is an optional Noise Gate plug-in. But, those tools work best with a low-level background noise and if the noise is bad, “The cure can be worse than the disease”.

[Trebor]

@Tazzman29

I have a voice recording that I’m trying to edit to get ride of a “crackle.” I noticed this happens when the recording volume goes above and below the “envelope” line. I’m wondering if there is a tool I can utilize that deletes those sections so all the audio that’s left is the ones between the envelope lines thus removing the “crackle.”

I think what you are describing is clipping: where the peaks and troughs of the waveform are flattened because they’ve gone off the chart.

If you select all the track then Amplify to 0db that will stop the waveform going off the scale.

[Tazzman29]

@Trebor

@Tazzman29

I have a voice recording that I’m trying to edit to get ride of a “crackle.” I noticed this happens when the recording volume goes above and below the “envelope” line. I’m wondering if there is a tool I can utilize that deletes those sections so all the audio that’s left is the ones between the envelope lines thus removing the “crackle.”

I think what you are describing is clipping: where the peaks and troughs of the waveform are flattened because they’ve gone off the chart.

If you select all the track then Amplify to 0db that will stop the waveform going off the scale.

I tried this and it won’t give me the option to use this effect unless I allow for clipping. When that box isn’t checked the “ok” option is greyed out…

[Gale_Andrews]

@Tazzman29

@Trebor

@Tazzman29

I have a voice recording that I’m trying to edit to get ride of a “crackle.” I noticed this happens when the recording volume goes above and below the “envelope” line. I’m wondering if there is a tool I can utilize that deletes those sections so all the audio that’s left is the ones between the envelope lines thus removing the “crackle.”

I think what you are describing is clipping: where the peaks and troughs of the waveform are flattened because they’ve gone off the chart.

If you select all the track then Amplify to 0db that will stop the waveform going off the scale.

I tried this and it won’t give me the option to use this effect unless I allow for clipping. When that box isn’t checked the “ok” option is greyed out…

Is this your recording? If so what recording equipment do you have? Makes and model numbers always help.

Amplify does not cure clipping in a recording, once the input level has gone over 0 dB. Unless you have a 32-bit float recording device (several thousand dollars) then if you record too loud the audio that was above 0 dB has already been lost. This is because standard 16-bit and 24-bit can’t represent audio above 0 dB.

Try Effect > Clip Fix… as Doug suggested.


Gale