Recent Posts

21

preenfm2 and preenfm3 / Re: Idea for a new PFM3 FX auto filter

« Last post by matrix12x on June 29, 2024, 04:39:19 AM »

Nice. 
It sounds exactly like I had hoped. I'm going to play with it and do some sound design tomorrow. I'm really excited about this. 

@toltekradiation great job as always!!

22

preenfm2 and preenfm3 / Re: Idea for a new PFM3 FX auto filter

« Last post by Toltekradiation on June 27, 2024, 07:51:14 PM »

ok, here is a first version

it's two bp filters, done in paraphonic mode,
so there is a dry/wet parameter and two params : Spread and Reso
it can be modulated from the matrix.

23

preenfm2 and preenfm3 / Re: Idea for a new PFM3 FX auto filter

« Last post by matrix12x on June 26, 2024, 01:43:52 AM »

That block diagram for the Stereo Random Filter is exactly what I was thinking about implementing. Maybe the parameters should be 1) phase and 2)mix (wet/dry). I'm not sure why I remembered it as auto filter. 

How would I take the current BPF code and modulate it like in this block diagram? or is it really 2 BPFs (L and R) code wise?

We could use the existing LFO and a mod matrix slot to modulate it.

24

preenfm2 and preenfm3 / Re: Idea for a new PFM3 FX auto filter

« Last post by matrix12x on June 26, 2024, 01:02:57 AM »

yep thats it exactly.

25

preenfm2 and preenfm3 / Re: Idea for a new PFM3 FX auto filter

« Last post by Toltekradiation on June 24, 2024, 07:18:52 PM »

got it : Stereo Random Filter, page 192

26

preenfm2 and preenfm3 / Re: Idea for a new PFM3 FX auto filter

« Last post by Toltekradiation on June 23, 2024, 11:16:38 PM »

Seems like a cool filter trick,
from the Triton manual, i could not find an "auto filter", but there is an "Auto Wah" filter which seems pretty close.

is that this one ?

edit :
the Triton manual https://cdn.korg.com/us/support/download/files/04d7a63fe4ac088ee33dc5fe89cc04d2.pdf

27

preenfm2 and preenfm3 / Idea for a new PFM3 FX auto filter

« Last post by matrix12x on June 22, 2024, 11:34:47 PM »

I was recently playing with a Korg Triton... and one of the FX in the Triton would be great here, the "auto filter."

So, its basically 2 band pass filters where one is hard panned right and has panned left. An LFO modulates the cutoff freq of the first BPF and the same LFO but 180 out of phase modulates the second BPF. LFO waveform is the "random" waveform. resonance/Q is set relatively high (but not self oscillating).

Parameters could be:
LFO Rate
Mix (mixing filtered and unfiltered sound)

How this differs from using the current BPF and modulating that using the existing LFOs is the second BPF being modulated 180 out of phase with the first one for a nice stereo effect and the "mix" parameter. this gives a good amount of motion to pads. In the existing BPF, you can't mix the un filtered sound with the filtered sound.

Thoughts?

I would probably start with the existing BPF code.

28

preenfm2 and preenfm3 / Re: Preenfm2 Program Change messages only works on Bank 1?

« Last post by Esppse on May 21, 2024, 07:00:26 AM »

Ok thanks for your help, got it working!

29

preenfm2 and preenfm3 / Re: Preenfm2 Program Change messages only works on Bank 1?

« Last post by Xavier on May 20, 2024, 02:05:28 PM »

Hi,

I know it's not very clear.
But from the midi doc (https://ixox.fr/preenfm2/preenfm/midi/) :

Program change
Bank select (CC#0) and Bank Select LSB (#32)
Preenfm bank : CC#0 = 0 then  CC#32 = Preenfm bank number
Combo bank : CC#0 = 1 then CC#32 = Combo number
DC7 bank : CC#0 = 2 then CC#32 = DX7 bank from 0 to 127
DC7 bank : CC#0 = 3 then CC#32 = DX7 bank from 128 to 55

So to access Bank2, program 26 you should send :
CC#0 = 0 (optional because that's the default)
CC#32 = 1 (for Bank 2, it's 0 based)

Then program change will select the preset in Bank2.

30

preenfm2 and preenfm3 / Re: DX7 banks dont appear in preen fm2

« Last post by Xavier on May 20, 2024, 02:01:25 PM »

Hi,

Only 4104 bytes Sysex file are compatible. I think there are other sysex with different sizes and they won't work.
They must also have .syx extension.

256 is the max number of DX7 file you can have. Because they are pre-read and filename are in memory.

Reminder : The first FAQ of preenfm3 also applies to prrenfm2 :
https://github.com/Ixox/preenfm3/wiki/FAQ


Xavier