Trying to put together a patch on the MK here, starting with a sine wave for oscillator 1 and square wave for the second. And putting their volumes at max.
Every other 4th note or so only one of the oscillators sounds, the second is dead. Is this what they call 'phase cancellation', or is it just poor synth quality? What is the cause?
One oscillator dead on some notes
Moderators: Sharp, X-Trade, Pepperpotty, karmathanever
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microkorgy
- Junior Member
- Posts: 59
- Joined: Tue Nov 24, 2009 6:32 am
It would be difficult to tell without hearing it. What you are describing should not happen. Equally, a sine wave should not really cancel out a square wave because the other harmonics of the square would not cancel out.
Actually, is it the sine wave that you're not hearing? That would make more sense. That could be caused by phase cancelation on some voices.
A number of solutions:
- detune the two waves slightly. You'll get that moving phasing sound which is generally considered pleasing, so you'll only get occasional cancellation because the oscillators are drifting in and out of phase with each other.
- turn oscillator sync on, if they are at the same pitch (osc2 transpose = 0). This will keep the two phase locked but in phase and not anti-phase (which causes cancelation)
Because the microKorg is based on DSP resources and not a single chip or board for each voice or oscillator like in analog systems, its not really very likely at all (read impossible) for just one oscillator of a voice to stop working. If there were a problem or bug in the DSP, you'd more likely hear nothing at all or the synth would be completely bricked. It is also not a 'low quality' synthesizer. Its cheap but fairly well built and the electronics are not 'cheap'.
Actually, is it the sine wave that you're not hearing? That would make more sense. That could be caused by phase cancelation on some voices.
A number of solutions:
- detune the two waves slightly. You'll get that moving phasing sound which is generally considered pleasing, so you'll only get occasional cancellation because the oscillators are drifting in and out of phase with each other.
- turn oscillator sync on, if they are at the same pitch (osc2 transpose = 0). This will keep the two phase locked but in phase and not anti-phase (which causes cancelation)
Because the microKorg is based on DSP resources and not a single chip or board for each voice or oscillator like in analog systems, its not really very likely at all (read impossible) for just one oscillator of a voice to stop working. If there were a problem or bug in the DSP, you'd more likely hear nothing at all or the synth would be completely bricked. It is also not a 'low quality' synthesizer. Its cheap but fairly well built and the electronics are not 'cheap'.
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Other Mfgrs: Moog Sub37, Roland Boutique JX03, Novation MiniNova, Akai APC40, MOTU MIDI TimePiece 2, ART Pro VLA, Focusrite Saffire Pro 40.
Past Gear: Korg Karma, TR61, Poly800, EA-1, ER-1, ES-1, Kawai K1, Novation ReMote37SL, Boss GT-6B
Software: NI Komplete 10 Ultimate, Arturia V Collection, Ableton Live 9. Apple OSX El Capitan on 15" MacBook Pro
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microkorgy
- Junior Member
- Posts: 59
- Joined: Tue Nov 24, 2009 6:32 am
Good answer, as usual.X-Trade wrote:It would be difficult to tell without hearing it. What you are describing should not happen. Equally, a sine wave should not really cancel out a square wave because the other harmonics of the square would not cancel out.
Actually, is it the sine wave that you're not hearing? That would make more sense. That could be caused by phase cancelation on some voices.
A number of solutions:
- detune the two waves slightly. You'll get that moving phasing sound which is generally considered pleasing, so you'll only get occasional cancellation because the oscillators are drifting in and out of phase with each other.
- turn oscillator sync on, if they are at the same pitch (osc2 transpose = 0). This will keep the two phase locked but in phase and not anti-phase (which causes cancelation)
Because the microKorg is based on DSP resources and not a single chip or board for each voice or oscillator like in analog systems, its not really very likely at all (read impossible) for just one oscillator of a voice to stop working. If there were a problem or bug in the DSP, you'd more likely hear nothing at all or the synth would be completely bricked. It is also not a 'low quality' synthesizer. Its cheap but fairly well built and the electronics are not 'cheap'.
I'll try detuning them (later today) and, also forgot about the oscillator sync. Will try those, and if not successful, report back, thank you.
As for the MK not being a cheap synth. It does damn sound phat like a good analog at times, if not more at it.