Reducing Bass

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Reducing Bass

Permanent link to this post Posted by psyclguy » Fri Mar 06, 2009 5:54 pm

I've recorded about 20 songs using Audacity from an audio receiver. The highs and mids are good but there is too much bass on each. Is there an effect in Audacity to reduce the bass? It has effects for bass boost but no bass reducer. I tried the high pass filter but the results weren't good. I've reduced the incoming bass for future recordings. Just wanted to know if I could improve the ones I've already recorded.
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Re: Reducing Bass

Permanent link to this post Posted by steve » Fri Mar 06, 2009 10:02 pm

Use the Equalizer effect (a lot better in Audacity 1.3 than 1.2)
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Re: Reducing Bass

Permanent link to this post Posted by psyclguy » Sat Mar 07, 2009 2:33 am

Should I use one of the Equalizer presets? How would I reduce the bass using this effect?
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Re: Reducing Bass

Permanent link to this post Posted by steve » Sat Mar 07, 2009 1:14 pm

Here is a screenshot from Audacity 1.3 of the kind of thing:

screenshot.png
screenshot.png (42.01 KiB) Viewed 24901 times


If you were using Audacity 1.3 I could have sent you a plug-in for boosting/reducing bass/treble
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Re: Reducing Bass

Permanent link to this post Posted by psyclguy » Sat Mar 07, 2009 1:50 pm

Steve, Actually I am using 1.3. I just realized I posted in the wrong area. So, there's a plug-in for reducing bass?
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Re: Reducing Bass

Permanent link to this post Posted by steve » Sat Mar 07, 2009 2:40 pm

psyclguy wrote:So, there's a plug-in for reducing bass?

Here's one I prepared earlier
(in case you don't know, that was a catch phrase from the BBC children's program "Blue Peter")

Download the attachment and unzip it into your Audacity plug-ins folder.
Restart Audacity and the new plug-in should be listed in the Effects menu as "Shelf Filter".

The default settings will probably be close, but have a play with it. Start off by testing a short sample of audio (Nyquist plug-ins can get very slow on long tracks).

I've only tested this on Audacity 1.3.8 alpha, so let me know how you get on (feedback and suggestions most welcome).

[Edit] See later post for new version.
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Re: Reducing Bass

Permanent link to this post Posted by psyclguy » Sat Mar 07, 2009 6:15 pm

Steve, I downloaded the plug-in, opened a recording, selected 30 seconds, and tried to run the Shelf Filter but I keep getting an error message which I've attached. What do you think could be the problem?
Attachments
Nyquist Error.jpg
Nyquist Error.jpg (6.16 KiB) Viewed 24852 times
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Re: Reducing Bass

Permanent link to this post Posted by steve » Sun Mar 08, 2009 6:59 pm

I thought that might happen, but I didn't have time to test it before going away for the weekend. There have been some updates to Nyquist in Audacity 1.3.8, and the version that I posted requires the new version.

I've also noticed a small error in the 1.1 version (not related to the error message that you are getting) which I have fixed in "shelf.ny v1.2"

To make the plug-in compatible with earlier (1.3.x) versions of Audacity I'll have to make some modifications - not sure what I should call it, (since it is a backward step)... I'll call it "shelf.ny v0.91"

Come back in a short while and I'll have the new versions uploaded.
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Re: Reducing Bass

Permanent link to this post Posted by steve » Sun Mar 08, 2009 7:29 pm

OK, here they are.

For Audacity 1.3.8 and later
shelf-v1.2.zip
version 1.2 for Audacity 1.3.8 and later
(874 Bytes) Downloaded 2476 times


For Audacity 1.3.7
shelf-v0.91.zip
version 0.91 for Audacity 1.3.x
(1000 Bytes) Downloaded 1114 times
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Re: Reducing Bass

Permanent link to this post Posted by psyclguy » Sun Mar 08, 2009 10:58 pm

Steve, I downloaded the 1.3.7 version plugin and it worked great! Made a huge difference in reducing the overwhelming bass. Thanks for your help!
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