linuxaudio.org

On Thu, May 6, 2010 at 10:49 AM, Louis Gorenfeld

 wrote:

quoted text
> Hi Mark,

>  If you just want to mess with biquads, this is a really good applet

> for playing around with them:

> http://www.earlevel.com/Digital%20Audio/PoleZero.html .. it'll show

> freq. response, but unfortunately won't show impulse response or

> phase.  But, I've found biquads to be a good starting point for

> filters because there is so much information available on their

> mathematics and you can create so many different types of filters with

> them (btw have you checked out Julius O. Smith's site or

> www.dspguide.com?)

Fun little link. Thanks.
I have been checking out dspguide.com.
This one is actually nice from the desigh POV as it gives you actual

equations and parameters:
http://www-users.cs.york.ac.uk/~fisher/mkfilter/trad.html
Go up one level in the URL to check out other filter types, etc.
>

quoted text
>  There's also Pure Data, which is a free Max/MSP clone.  It supplies

> both real and complex pole/zero functions, and has an FFT function as

> well.  There's a learning curve there, but it's pretty flexible.

> You'll probably want something to help you solve for gain though if

> you end up using Pd.

I think Pd seems like way too much for what I want, and might not be

very applicable to my end goal.

quoted text
>

> Cheers,

> Louis

>

> On Thu, May 6, 2010 at 10:41 AM, Mark Knecht  wrote:

>> Hi all,

>>   I wonder if there are any Open Source tools for learning

>> software-oriented DSP, most specifically designing filters?

>>

>>   I'm an EE but haven't done any real math in years. I just want to

>> fool around, write some equations, see the results in some sort of

>> frequency (filter characteristics) or time (impulse response) plots.

>>

>>   Does anything like that exist?

>>

>>   I started looking at Octave but it's clearly over-kill so I figured

>> I'd ask if there was a better platform?

>>

>> Thanks,

>> Mark

>> _______________________________________________

>> Linux-audio-user mailing list

>> Linux-audio-user@lists.linuxaudio.org

>> http://lists.linuxaudio.org/listinfo/linux-audio-user

>>

> _______________________________________________

> Linux-audio-user mailing list

> Linux-audio-user@lists.linuxaudio.org

> http://lists.linuxaudio.org/listinfo/linux-audio-user

>

_______________________________________________

Linux-audio-user mailing list

Linux-audio-user@lists.linuxaudio.org

http://lists.linuxaudio.org/listinfo/linux-audio-user