[TriLUG] Sound Processing

[Roy Vestal]

Heh...My amp's older than your amp (1958 Danelectro)

BTW, Depending on the software, you can also use a notch filter as a 
high pass filter...You can setup up audacity to do this.

One of the cool things about Audacity, is you can capture the specific 
frequency and then use it as a filter. Just be careful not to capture 
the wrong one.

Oh, you could also try sending the 180 phase frequency through the wav 
file by piping it through freqtweak. I haven't used it this way for a 
final product yet, but I've been goofing with it.

HTH

Jim Ray wrote:
> Wouldn't a single pole high pass at 800 Hz slam 60 Hz into the noise
> floor?
> 
> I'd use something like Cool Edit myself. It has been 15 years since I
> last designed an analog filter in the field.  Everything has gone
> digital.
> 
> Not my vacuum tube guitar amp, though ;-)
> 
> Regards,
> 
> Jim
> 
> Jim Ray, President
> Neuse River Networks
> tel: 919-838-1672 cell: 919-606-1772
> http://www.Neuse.Net
> 
> Connecting You to the World since 1997
> 
> -----Original Message-----
> From: trilug-bounces at trilug.org <trilug-bounces at trilug.org>
> To: Triangle Linux Users Group discussion list <trilug at trilug.org>
> Sent: Tue Jul 10 13:51:55 2007
> Subject: Re: [TriLUG] Sound Processing
> 
> On Tue, 10 Jul 2007, Jim Ray wrote:
> 
>> Look for a *high* pass filter, not notch.
> 
> The analogue notch filters are really sharp. You can't 
> acheive anything nearly as sharp with high/low pass. If 
> you've got a single frequency, then notch is the way to go.
> I don't know how sharp the FFT notch filters are.
> 
> Joe
>