Rattling behind voice in voice audio

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Rattling behind voice in voice audio

Permanent link to this post Posted by Tab3 » Mon Nov 06, 2017 6:35 pm

Hey guys

I get this rattle behind the voice sometimes when using audacity. It seems to always start about 2-3 mins into a recording. I have tried different mics. It doesn't happen every recording but is annoying when it does! I cannot use noise reduction as the rattle seems to be generated only behind the voice audio.

I have a clip here so you can see what I mean.

What can I do to get rid of this?
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Re: Rattling behind voice in voice audio

Permanent link to this post Posted by Trebor » Mon Nov 06, 2017 8:19 pm

If you zoom-in on the waveform you can see there are glitches ...

glitch.png
glitch.png (25.96 KiB) Viewed 158 times

They could be "skipping", see ...
http://manual.audacityteam.org/man/faq_recording_troubleshooting.html#How_can_I_record_without_small_skips_or_duplications.3F
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Re: Rattling behind voice in voice audio

Permanent link to this post Posted by Tab3 » Tue Nov 07, 2017 1:49 am

Thank you. Is there anything I can do to salvage this audio?
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Re: Rattling behind voice in voice audio

Permanent link to this post Posted by billw58 » Tue Nov 07, 2017 2:58 am

You might want to look at this FAQ:

http://manual.audacityteam.org/man/faq_ ... _on_Mac.3F

The problem of "clicky" recordings on Mac sometimes requires the counter-intuitive measure of reducing the "Buffer length" in Devices Preferences.

As to rescuing the recording, there is no simple method. All I can suggest is zooming in, finding each glitch, selecting a small region around it and doing Effect > Repair.

-- Bill
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Re: Rattling behind voice in voice audio

Permanent link to this post Posted by Trebor » Tue Nov 07, 2017 3:10 am

Tab3 wrote:...Is there anything I can do to salvage this audio?

You can use repair individually on each of the glitches, but that will take an eternity.
There is a DeClicker plugin for Audacity which does the all the repairs in one go, (it's slow but much quicker than by-hand).

Suggested DeClicker settings.png
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before-after DeClicker (1).flac
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Re: Rattling behind voice in voice audio

Permanent link to this post Posted by waxcylinder » Tue Nov 07, 2017 11:18 am

billw58 wrote:You might want to look at this FAQ:

http://manual.audacityteam.org/man/faq_ ... _on_Mac.3F

The problem of "clicky" recordings on Mac sometimes requires the counter-intuitive measure of reducing the "Buffer length" in Devices Preferences.

As to rescuing the recording, there is no simple method. All I can suggest is zooming in, finding each glitch, selecting a small region around it and doing Effect > Repair.

-- Bill

Those glitches might (and I say "might") be picked up and fixedby Brian Davies; Click Repair app- you can try it for free for 14 days. See this sticky thread: viewtopic.php?f=28&t=1994


Update: I just did a quick test with ClickRepair on your sample - and it seemed to work quite well.

WC
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