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Software Instruments => SQ-80 V => SQ80 V - Technical Issues => Topic started by: sag_the_great on September 21, 2021, 06:30:23 pm

Title: Square LFO modulator not working properly
Post by: sag_the_great on September 21, 2021, 06:30:23 pm

When modulating a parameter (eg pan or osc pitch) with a square wave LFO, the modulation only goes in one direction (ie unipolar) as opposed to bipolar. The LFO graphic depicts this as bipolar. Other LFO waveforms work as expected.

Title: Re: Square LFO modulator not working properly
Post by: LBH on September 21, 2021, 07:46:41 pm

Hi,

According to the original hardware Ensoniq SQ-80 manual, then the LFO SQUARE waveform is positive going only. So it seems to be correct Arturias do likewise.
I think the Graphic display should show this behavior though. The MOD MIXER does show the correct positive cycle.

If you use the MOD MIX and in example choose any waveform except SQUARE and NOISE for input 1, and NONE or the same LFO for input 2 - then choose DIVIDE as operator and set the AMOUNT to ZERO, then you will get a Bipolar SQUARE waveform with a start phase that depend on the choosen waveform.

EDIT:  Arturia could  add  a Bipolar Square waveform though. They have allready added a falling SAW and a SINE it look like. EDIT END

Title: Re: Square LFO modulator not working properly
Post by: sag_the_great on September 22, 2021, 10:19:32 am

Thanks for the informative reply, and yes I hope Arturia give us this option :)

Title: Re: Square LFO modulator not working properly
Post by: LBH on September 23, 2021, 12:28:37 am

Quote from: sag_the_great on September 22, 2021, 10:19:32 am

Thanks for the informative reply, and yes I hope Arturia give us this option :)

Your welcome.

Indeed. Perhaps post a feature request.