Fixing Tunnel Effect

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csm634s
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Fixing Tunnel Effect

Post by csm634s » Fri Aug 15, 2014 10:45 am

I'm new to this, but I was wanting to see if someone could walk me through the steps to remove the tunnel effect of this recording. I ask you to walk me through because I have several recordings that I need to apply this same methodology to. I've looked through the forums and there are various posts on tunnel effect, but it seems as though there is a different answer depending on who is posting back.

I'm using Windows 7 Home Premium with Audacity 2.0.5 this was obtained with the .exe installer.

Thanks in advance
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Pete Fortunato Session 9-Audacity.aup
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steve
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Re: Fixing Tunnel Effect

Post by steve » Fri Aug 15, 2014 11:30 am

An "AUP" file is not an audio file. It only contains instructions to tell Audacity how to reconstruct the Audacity project from the audio data that is on your computer. It does not contain any audio data. See here for more information (important concept when working with Audacity) http://manual.audacityteam.org/o/man/au ... jects.html

To post an audio file that we can listen to, please see here: http://forum.audacityteam.org/viewtopic ... 49&t=72887
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csm634s
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Re: Fixing Tunnel Effect

Post by csm634s » Sun Aug 17, 2014 8:53 pm

Let me try this again. Please list the steps taken to edit the test track.
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Test.wav
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steve
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Re: Fixing Tunnel Effect

Post by steve » Mon Aug 18, 2014 9:46 pm

Probably not able to make much improvement to that - it's pretty bad quality.
It sounds like the recording has already had substantial processing done to it. If so, could you post a short sample of the original unprocessed recording. I can't promise much improvement but happy to take a look.
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csm634s
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Re: Fixing Tunnel Effect

Post by csm634s » Tue Aug 19, 2014 11:14 am

Here's a small snippet of one of the originals. Please let me know if anything can be done.

Thanks again
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Test1.wav
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steve
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Re: Fixing Tunnel Effect

Post by steve » Tue Aug 19, 2014 1:36 pm

csm634s wrote:Please let me know if anything can be done.
Not much :(

Noise Removal is a waste of time because the the noise and the voices occupy the same frequency band. Reducing the noise will muddle the speech and make it even harder to understand.

Probably the best that you can do is to try any pull the speech frequencies a little more to the foreground.

First, delete the big click from the start, then Amplify with the default values. Then apply Equalization. I used these settings:
eq.png
eq.png (41.44 KiB) Viewed 2086 times
This is the result. It still sounds bad, but I can make out a bit more clearly what is being said.
Test1b.wav
(822.96 KiB) Downloaded 106 times
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