SynthMaker

newb - looking into 'first example' synth

Archive · 2005 3 old posts

From the original SynthMaker forum (2004–2014), with its members’ names and dates.

kingtubby ·

I've been studying the example synth posted here: [old link] The coarse tune control doesn't work as expected. I'm assuming it's supposed to move up one octave over each step. It's marked 0.5, 1, 1.5, 2, but the first 2 steps sound kinda the same as the second 2 steps. I've looked into the schematic and played around with the float controls and so on, but my only conclusion so far is that the tuning is having a FM effect between the 2 saw wave osc's. I'd find it really helpful if somebody could explain why this is, and how to correct the problem.

Mart

jorge ·

Hi kingtubby, I hope I can help.

The coarse control in the front panel affects the value multiplied by the frequency of the second oscillator:

The float data component showing 0.5 and connected to the poly multiplier is the one controlled by the coarse knob. The idea of the synth is to multiply two sawtooths allowing for the second one to be detuned in relation to the first one. For example, when the frequency is multiplied by 0.5 you're basically lowering the frequency of the second sawtooth by 1 octave. The latest example synth with version 0.9.1a is a better example, but I guess you're probably following the tutorial. I dont think there is an FM effect, probably more of a Ring modulation effect. We havent spent much time with the example schematics so far but if you need help creating certain modules let us know. We also have an internal version of SM with new Beta and Alpha components, whenever you find that you have learned enough from v 0.9.1a and you want to go further, we can send you the latest exe if you're interested. Let me know if you need more help.

kingtubby ·

That's helpful thanks Jorge, I had preconceived ideas that the example is a standard subtractive synth. I'm slowly getting a grip on things here - I'll let you know as soon as I need any more guidance.

Mart 🙂

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