DLC86
Fractal Fanatic
These days I'm trying to refine my sim of the Electric Mistress flanger, but no matter what settings I chose I could never achieve that lush sound, so I opened up the pedal, desoldered the mixing resistors at the output and measured the frequency response of both dry and wet signals.
What I found is that a big part of that lush tone is created by the filtering of both signals which can't be recreated within the flanger block on the axe fx (I'll eventually post the graphs as I get home if anyone is interested).
For example, from the graphs it looks like the wet signal is hi-passed at ~320Hz and low-passed around 3.5KHz, the problem is that the slope of these filters is very smooth (I think it is 6dB/oct) while the filters in the flanger block have a 12dB/oct slope.
Another problem is that the dry signal has a different frequency response, similar low-cut but much higher hi-cut frequency.
So my wishes are these:
1. Adjustable slope for the low and high cut filters in Flanger and Chorus blocks (but it could be useful on pretty much any effect)
2. Dedicated low and high cuts for the dry signal in flanger and chorus blocks (currently the filters only affects the wet signal)
3. A way to make custom LFO waveforms, something along the lines of the modifier window
4. Input select parameter on flanger and chorus blocks (this has nothing to do with my preface but since it's related to those blocks I mentioned it anyway)
I also wonder where the low and high cut filters are located in the virtual circuit of the flanger block, but probably only @FractalAudio can answer this.
Are they at the input/output of the block or are they placed before the feedback path (just like in the delay block)?
I think most of the mistress filtering on the wet signal happens at the output of the BBD chip, just before the signal is split between the output path and the feedback path.
What I found is that a big part of that lush tone is created by the filtering of both signals which can't be recreated within the flanger block on the axe fx (I'll eventually post the graphs as I get home if anyone is interested).
For example, from the graphs it looks like the wet signal is hi-passed at ~320Hz and low-passed around 3.5KHz, the problem is that the slope of these filters is very smooth (I think it is 6dB/oct) while the filters in the flanger block have a 12dB/oct slope.
Another problem is that the dry signal has a different frequency response, similar low-cut but much higher hi-cut frequency.
So my wishes are these:
1. Adjustable slope for the low and high cut filters in Flanger and Chorus blocks (but it could be useful on pretty much any effect)
2. Dedicated low and high cuts for the dry signal in flanger and chorus blocks (currently the filters only affects the wet signal)
3. A way to make custom LFO waveforms, something along the lines of the modifier window
4. Input select parameter on flanger and chorus blocks (this has nothing to do with my preface but since it's related to those blocks I mentioned it anyway)
I also wonder where the low and high cut filters are located in the virtual circuit of the flanger block, but probably only @FractalAudio can answer this.
Are they at the input/output of the block or are they placed before the feedback path (just like in the delay block)?
I think most of the mistress filtering on the wet signal happens at the output of the BBD chip, just before the signal is split between the output path and the feedback path.