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Pan65
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Joined: 12/02/2012 - 12:04
Wierd sounds at high pitches

Ok I'm not sure if this is a bug or something thats normal. I have not notised this strange effect on any real syntheziser I've owned trough the years.

I've been playing around with the subsynth lately (my favorit by the way) and notised that som strange bi tunes starts to accure at higher pitches. It's more pronounced using edgier waveforms like saw or square.U

It sounds a bit like a suboscillator playing random pitches. You can test this by using only one oscillator with no filter, lfo, fx or whatever (default settings) change the waveform to square or saw and play some notes above c5.

I don't know what this is but it could be that the waweforms not looping correct. But it could also be an illusion, that my ears starts pickup patterns that's not there. Like the optical illusion that occur when you watching a wheel spin up, at some point it looks like it stops spinning and then slowly starts spinn backward.

Maybe this is what happens, when the frequency reach a point the waweform starts lineup at a lower frequency producing a second note. I don't know but it makes it hard to make highpitched sounds.

 

[Mod edit: removed a whole bunch of whitespace]

Rej - Dev
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Joined: 12/18/2011 - 15:52
Yes, this is called aliasing

Yes, this is called aliasing and it's common for cheap software synths. It can be overcome by using higher-quality oscillators, but the subsynth was the first synth I wrote (ever), so it's not the best for sound quality.

I've since gotten band limited oscillators working for the modular synth so I'll be bringing some of that over into the subsynth for the next version, you'll get to choose which type you want in your patches. Of course like everything else related to synths and software, the high-quality version uses more CPU.

DJBR
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Joined: 07/15/2012 - 04:18
Oh boy!

Oh boy!


Paint Huffing Pit Bull Puncher

Pan65
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Joined: 12/02/2012 - 12:04
Nice

Sounds good to mesmiley