Module Name	Module description	Download
24db Moog Filter	This filter sounds very close to my Studio Electronics Moog clone (SE-1x). A little bit smother but equally fat and musical. If you plan to do something close to the real Moog sound, you better have to check this one. Lowpass, Highpass and Bandpass versions. read more...

Here is my emulation of the Moog Filter. The latest version has several Moog emulations : Old Moog, Smooth, Agressive, Distortion, Clean and Real. 

I've spent a great time tweaking the filter algorithm to find creative versions. Because some Moogs are old, and scratchy, I've used soft distortion. It is very interesting, while having something very close to the original I got in front of me, to try to emulate the different models I recorded or even some that will never exist. The distorded is a fun test, just to play with extreme settings.

Here is how this filter has been designed.

• I've started from a Biquad sweep filter (the same you can check here).

• I've added a little harmonic distortion based on pseudo random and on the incoming signal analysis.

• Made some programming changes to create a tuned self oscillation resonance.

• I've tuned the filter from the different synths I had around me, and mainly from the SE-1 from studio Electronics.

• I've added some extra specs such as support of higher frequencies, and resonance self oscillation soft saturation at extreme range.

• I've finally played with this filter and try to have the most musical, that means thousands of compile, test, listen record re-test.

Here is the Moog synths from Eric Englebert, (a brand known press magazine writer from Keyboard Recording). Thanks to have me left recording and play with his nice Moog setup. See the Memorymoog Lame (less than 30 in the world!).

I've recorded the sound of all OSC individually at every filter stage...

Note that the Memory Moog and the Moog signature do not have the same frequency response and even if they have both a great sounding sweep 24 db filter, the sound is quite different (the Memory moog sounds FAT!!!)

I'm the lucky owner of an SE-1, an SE1-x and ATCX quad filter from Studio Electronics. So I had the time to play and record, compare with my filter. Studio Electronics have made a great deal on re-creating the original ladder filter from Bob Moog.

I've worked with the SE1, mainly because the Moog have a weird OSC where you can morph from sine to square progressively, which is not easy for having stable results from day to day...I've used the Voyager and Memory Moog samples as reference.

The challenge was to do some kind of mix of all these data, to create an unique filter that will be the DADEV Moog emulation, with its own original sound signature and some more extra recipes to play with your synths !

Now let's compare the frequency result from the 'Real Moog' Model.

In these two pictures I've set the resonance to self oscillate at 3Khz. the main difference is in the highest frequencies. I think that this picture demonstrate how close the DADEV filter is from the original!

Input : input audio signal.

Resonance : level of the feedback in the final result. At highest level the filter will start self oscillating. Use the frequency parameter to 'tune' the feedback with your tone.

Frequency : frequency of the filter. Well you are supposed to know what it is.

I've added several versions of the filter. Now this filter is 5 filters in one.

Select

Old Moog : is a filter with some distortion when it self oscillate.

Smooth : is a filter when the self oscillation is very smooth.

Agressive : is a filter where the self oscillation generate a lot of distortion.

Distortion : the sound is almost always distorded, very dirty.

Clean : clean with no artifacts

Real : the closest to the one I have in front of me...