Cap & resistor calculator for filters

[Pushtone]

Elliott Sound Products www.sound.westhost.com/
has an EQ project using a Multiple Feedback Bandpass Filter.
There is a freeware calculator for finding cap and resistor values for a given frequency.
Sorry Mac users, its Windows only.

It looks intriguing but the devil is in the details. Like the bi-polar PSU.
Any comments on this type of filter? Can it be integrated into 9v circuits
I guessing the calculator can only be applied to this particular filter but it would be handy if it could be applied generally.

link to his Graphic EQ project. About half way down is the link to MFB Filter design program.exe
http://sound.westhost.com/project64.htm

It needs a dll to run. The link for the dll is provided if you don't already have it on your system.
Download, unzip, and drop the dll into /Windows/system/ folder

Here is the link to the multiple-feedback bandpass filter page
http://sound.westhost.com/project63.htm

And finally heres a screen cap of the program.
http://www3.telus.net/david65/ESP-FilterCalculator.GIF

The description of the EQ projects sound interesting enough to build too;

"This equalizer is designed as a preamp suitable for musical instruments - guitar, bass and keyboard in particular. Unlike most conventional graphic equalizers, each slider ranges from fully off to fully on, and not the more conventional +/-12dB or so that is normally available. As a result, there is no flat setting (other than all off!). This graphic is designed to be used to create a sound, and is not suitable for hi-fi. It may be used as an add-on unit to existing instrument amp preamps, tone controls, etc. The flexibility is extraordinary, allowing a hollow "single frequency" type sound, right through to almost any tonal variant imaginable."

[rockgardenlove]

These things are never for Mac 

(Yes, its so bad, it deseves 3 angry faces  )

[Sam]

These things are never for Mac 

(Yes, its so bad, it deseves 3 angry faces  )

I've noted that too. It deserves at least four angry faces.

[rockgardenlove]

Agreed.  Here's the 4th.

[Noplasticrobots]

Here's my fifth! 

I just use this calculator: http://www.opamplabs.com/rfc.htm

[Peter Snowberg]

Silly rabbits, everything runs on the Mac. 

http://darwine.opendarwin.org/index.php
http://www.apple.com/macosx/bootcamp/
http://www.microsoft.com/mac/products/virtualpc/virtualpc.aspx?pid=virtualpc
http://www.lismoresystems.com/en/

[mac]

Silly rabbits, everything runs on the Mac. 

http://darwine.opendarwin.org/index.php
http://www.apple.com/macosx/bootcamp/
http://www.microsoft.com/mac/products/virtualpc/virtualpc.aspx?pid=virtualpc
http://www.lismoresystems.com/en/

yeap, but anyway here is the 6th

mac

[Noplasticrobots]

Everything runs on Mac if you've paid, oh about 500 bucks in the last few years for upgrading! The only downside to Apple...