Re: [linux-audio-user] Re: Removing AC hum after the fact.

From: Jan Depner <eviltwin69@email-addr-hidden>
Date: Mon May 29 2006 - 20:37:37 EEST

On Mon, 2006-05-29 at 19:16 +0200, Alex Polite wrote:
> Thanks for all the input.
>
> I did some experimentation with jamin. Cutting of everything below 300
> Hz sure helped alot. But the harmonics went right through the speech
> spectrum so canceling them all out pretty much meant canceling the
> speech out as well.
>
> I found freqtweak and hooked that up. It did produce a very beautiful
> spectrogram but it didn't solve my problem.
>
> I need something smarter. Something that will 1) take a few seconds
> of audio when there's no speech (only hum) and treat that as a
> baseline. 2) Reduce the frequencies all over by that baseline.
>

    Take a look at Gnome Wave Cleaner. You can select a section and use
it as a noise signature. It works pretty good for vinyl.

-- 
Jan 'Evil Twin' Depner
The Fuzzy Dice
http://myweb.cableone.net/eviltwin69/fuzzy.html
"As we enjoy great advantages from the invention of others, we should be 
glad of an opportunity to serve others by any invention of ours, and 
this we should do freely and generously."
Benjamin Franklin, on declining patents offered by the governor of 
Pennsylvania for his "Pennsylvania Fireplace", c. 1744
Received on Tue May 30 00:15:03 2006

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