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Help, please!

I need help fixing these audio files. They were recorded at 48khz, 24bit through a Focusrite liquid 56 interface. The ASIO buffer was set at 96.

This has never been an issue before and I was monitoring direct (not through the DAW) so there was no apparent distortion. There are 4, 20-25 minute podcasts. 2 microphones in the same room.

As you will hear from this example, there is a crackle/distortion throughout, which gets more apparent as the signal gets louder.

When you inspect the file, there is a single sample out of place every 96 samples. If I select the area (adjacent samples) and use a repair tool in Audacity, or SoundForge etc. I've had good success in "fixing" it. (much better than any decrackle I've tried)

I can't find a tool that will do just this task. It seems that all "declick/decrackle" plugins "listen" for the crackle and then try to remove it. But if I could tell them that it happens every 96 samples then I'm sure it would work better. If you can find a tool that does this I would greatly appreciate.

I've considered scripting. I don't have access to soundforge .. just a demo, but I understand you can do some scripting with it. Apparently if you have some programming skills you can do scripting in Audacity. (requires a recompile of the software and then knowledge of python) I created a keyboard macro that would select the bits, apply the repair tool, then move ahead 96 samples, then repeat. It works for a while but the software gets bogged down with too many commands after a while. And it is very slow.

Re-recording is not an option. The whole project would be scrapped if it can't be repaired. If you can help, please download the attached file and then contatct me. Thanks in advance!

https://www.dropbox.com/s/bymb0lh7kvu8901/Audio%2007.wav

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Comments

RemyRAD Tue, 08/12/2014 - 08:40

You have the Audacity to be using Audacity.

[MEDIA=soundcloud]remyrad/audio-07nr
[[url=http://[/URL]="https://soundcloud…"]View: https://soundcloud…]="https://soundcloud…"]View: https://soundcloud…]

So I cleaned this up with some other software quickly. I didn't pass the Audition. That is, I didn't pass on Audition. I passed it through, Audition. I didn't win the Audition. I had to buy it. So it's now noise reduced from the Audition. It was easy. Took mere seconds.

It's not perfect but it will have to do. I'm perfect.
Mx. Remy Ann David

Lem0ns Tue, 08/12/2014 - 10:55

It isn't normally a problem. I can usually record 16+ tracks with some plugins running with the buffer set at 96 and the CPU barely hitting 20%
I can't replicate the issue. I can even go down to 64 samples without any problems. The only other time this happened I caught it right away and fixed by just restarting the DAW/resetting the interface.