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Braindance idm acid bass lines - how do they do it?
MUFF WIGGLER Forum Index -> Production Techniques  
Author Braindance idm acid bass lines - how do they do it?
wolfmoonx
I am trying to figure out how this style of bass line is sequenced


From a discussion on reddit there are some clues like the obvious Atlantis, what else ?

r/modular Any tips for creating basslines like this? (fast idm/electro acidic) TechDiff - BunkHoleeGaracid

Maybe one of you cats on this board is doing this already, maybe in software like reaktor.

looking for tips and ideas, what do you guys think
matthewjuran
Some guessing: this one sounds like two square wave oscillators with a low-pass filter that’s being modulated by an LFO and amplitude envelope. That VCA envelope, if ADSR, could be all zero besides the decay which could also be being modulated to have the notes seem shorter and longer, or more likely the note is being held shorter and longer by the sequencer and the decay is zero and sustain is 100% with a short release. The filter also might be tied to the note so that it’s more open the further up in octave it is. There’s a minimal delay effect.

People playing the 303 might be considered the source of the style: https://www.muffwiggler.com/forum/viewtopic.php?t=204124

Glide and resonance are often modulated in this style too. Also, I haven’t done or seen this, but my understanding is a gate feature on mixers can turn off the sound after a delay which can add to the effect.
Panason
This is why it is important to have sequencer control of ADSR stages.
wolfmoonx
That 303 thread is pretty interesting

Yea your right, modulation on the envelopes and gate times is the key for this kind of acid sound. oscillator not as important. Im playing around in reaktor and max for live to approximate this. it does not sound so 'liquid' yet.

Also tried simple audio gating and sequencing samples of snippets algorythmicaly but quickly realized it is a different sound altogether.

This sound is all live modulation. Maybe even one sequencer doing the gating and a different sequencer modulating gate and adsr lengths

OK >very frustrating > speculation 1 on patching >
on osc side > the tone is shifting so main osc source being summed/ vca modulated maybe > and the notes > sounds like one sequencer cycling between longer 8th note gates where slides and accents are being modulated to come in and out > and 16th note stutters > and this gating sequence is also being modulated > by two or three synced modulators (just simple LFOs?)that is also modulating (or just simple clocking) multiple adsr in sync > and this shifting morphing adsr is doing magic on note glides, accnts filter res and cuttof etc Guinness ftw!
bimbom
Wouldnt it be an easier solution from early 90’s ?
Maybe running 303 / 101 in double time ?
wolfmoonx
but that 90's acid is not your typical braindance bass line bimbom. (which is ironic cuz all this kind of afx IS from the 90s hihi )

but hmm... im currious. got link for the double time idea?
nuromantix
The sound is just an SH101 or copy of it. You could sequence it from the internal sequencer but to get this much variation I guess you could use a 303 as the sequencer. It's really simple, there is nothing clever going on except for the choice of notes & timing.
RhythmDroid
Step 1) Commit to making a 16 step pattern/sequence in which there are only 2 different note lengths(or "gate times"), one very short, and one that lasts slightly longer than a 16th note.
Step 2) Get an analog or VA synth to play a pure square wave, monophonic mode ON, portamento ON with medium rate, but portamento is only triggered when 2 notes overlap (usually referred to as "mono mode"). Have a nice little ADSR envelope shaping the filter cutoff, using a low pass filter
Step 3) Program out your 16 step pattern using random notes, all in a minor scale, involving some rests (blank steps), some short notes, and a couple long notes (the ones which have a note length/gate time slightly longer than a 16th note)
Step 4) Copy that pattern to several pattern slot areas. On each pattern, add or subtract some random notes, and transpose a couple notes up or down by an entire octave
Step 5) Start the sequencer and jump back and forth between your patterns in real time, also occasionally temporarily shortening the pattern length to 4, 8, or 12 steps, then resetting to 16 steps.

All-in-one piece which can do this: Elektron Analog Four
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