Mixer Strip with Parametric EQ and Midi Remote Control
Archive · 200516 old posts
From the original SynthMaker forum (2004–2014), with its members’ names and dates.
rl ·
As an application for shifrins RBJ-Filter adaption I built a mixer strip with a parametric EQ using shelving and peak EQ filters with a nice frequency diagram. No fancy GUI yet, just functionality.
The mixer strip is fully midi controllable. The settings are fixed for my TASCAM US-428 DAW controller (channel 1). I used this to get my hands dirty with the midi modules.
In the long term I would like to define mappings for various external midi devices, maybe using the parser module, but this needs more thinking - e.g putting the mapping configuration in a Text Module. Suggestions welcome.
To jorge, malc: when L and R audio channels are connected, SM crashes as soon as I'm turning one of the EQ knobs.
Get the osm file from here
jorge ·
rl wrote: when L and R audio channels are connected, SM crashes as soon as I'm turning one of the EQ knobs.
Thanks rl, it's crashing for me too, I'll make this a priority. I'll let you know here when it's fixed.
Great schematic BTW.
unkargherth ·
As my test shows, crash has nothing to do with moving knobs. It occurs when freq viewer is updated. This points that posibly the bug is related to feeding an analyzer with a mono input.
( jorge. This remembers something. Why the hell i couol make a wave viewer for a mono signal -using Mono to Graph instead of Signal Analyzer-but seems imposible to make a working FFT viewer for it ? )
jorge ·
unkargherth, do you mean this?:
[old link]
unkargherth ·
Not exactly. ( sorry, i have no osm at hand now. It's something that i tried and deleted a couple of days ago)
Take this:
Get any standard synth
Feed Its poly out to a poly to mono
take the polyto mono out into an MONo To graph ( the one wich hasn't a trigge rinput)
Last, Feed Mono to graph out to a graphlines module.
This works ok ( getting updated in real time and so on)
Then insert an FFT module Betweeen Mono to Graphs and Graphlines
Nothing gets drawn
( at least when i tried last time, Think was version _W)
infuzion ·
Very cool! The mute fade down is neat too. Should come in handy to tear apart & reuse. Do you mind that RL? A few observations:
• I don't get the crash, but then again in my _y I don't see the Feq Diagram
• A slope of 0 in either the Hi or Lo shelf will cause sound to stop; I have to reconnect the sound input
• for some reason, the right channel (atleast in the GUI) seems louder. I tried to copy/paste the elements from the left & got the same error. You can set the pan to middle, & turn the vol all the way down to see what I mean.
• Is there overdrive somewhere? When I crank up the volume, I get more distortion.
cheers
jorge ·
unkargherth, the old MonoToGraph doesnt generate triggers when the graph changes, you can use the Ticker25 to generate the triggers as follows:
[old link]
If that still doesnt solve it let me know.
rl ·
- tear apart & reuse:
I don't mind, of course not. The schematic also used other's work.
- distortion:
I hadn't had a chance to listen, since at my computer the SM crashes when I connect audio out.
The filter input values could need some tweaking. Most mixers have limited frequency ranges:
cubase: 4 ranges (Hz) [20..2k] [250..4k] [2k..10k] [4k..14k]
orion: 4 ranges [80 (fixed)] [45..2500] [500..10k] [12k (fixed)]
also slope, Q, gain should be limited.
- right channel
my mistake: in the panner module remove the green link at lower right from the float subtract to the lower mono multiply
I will update my schematic soon.
jorge ·
rl wrote: when L and R audio channels are connected, SM crashes as soon as I'm turning one of the EQ knobs.
Although we need to change SM not to crash in a situation like your schematic, the reason it crashes is because you're mixing an Analyser section with a sound section. While the sound works at sampling rate ( like for example 44100 samples per second ) the Analyser works much faster than sampling rate, it calculates all the samples requested as soon as possible. At the moment you cant mix the two sections.
In your schematic by connecting from the Unpack to the "freq diagram" module you're mixing the sound section with the analyser section and that's causing the crash.
unkargherth ·
Also, although i haven't noticed before, better to change the Graphlines to another color diferent than white....
infuzion ·
unkargherth wrote: Also, although i haven't noticed before, better to change the Graphlines to another color diferent than white....
..since the Poly connectors are white as well; that's a good observation unk.
unkargherth ·
I wasn't meaning that Infuzion. I mean to change the color on freq diagram is dran because the background is white too..Nothing to do with wire colors
rl ·
Update - almost 2 years later:
Using an old version of Synthmaker I was able to recover the schematic and to repair it by changing parts of the schematic with "more recent SM technology". It's now working again.
Pls. note I did this long time ago when there were no wireless connectors and the standard knobs were not midi-controllable. I left this part unchanged to demonstrate how to control knobs with endless rotary controllers (that small EQ knobs).
The EQ-knob ranges would need some fine-tuning and the RBJ filter code could be improved though.
To download use the link from the first post.
sunsynth ·
Hallo Rudolf,
dein Strip war/ist es wert neu aufgelegt zu werden...!
Der inspirierte mich (incl. blend-mute) zu meinem eigenen "kleinen" Mixer http://www.justmix.biz (noch beta)
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