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lviklund Member |
posted 18 October 2006 06:34
 
There is one basic thing that I cannot figure out. How do I do a classic analog oscillator sync? Synching osc2 to osc1. If you don't ask.... Regards IP: Logged | |
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SSC Administrator |
posted 18 October 2006 10:10
Assume that OscC has frequency !fC and OscM has frequency !fM. Then in the Formant field of OscC, enter the ratio !fC/!fM. In a sense, you are controlling the "duty cycle" of an arbitrary waveform. For example, if the ratio of the frequencies were 2/1, you would finish a full cycle of OscC, then wait at zero for a full cycle period before repeating. Obviously this cannot work for ratios less than 1, since that would retrigger before one cycle has been completed (and the discontinuity would click). (You don't actually need a second, modulating oscillator, you just need the ratio of modulator's frequency to the carrier's frequency.) In the Sound Library there are also some examples of sync oscillators implemented using Waveshaper as an Oscillator. IP: Logged | |
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lviklund Member |
posted 18 October 2006 15:27
Thank you for the answer. I am still not shure about what I am doing here. What I would like to do is retrigger oscM after a full oscC cycle. /Lasse [This message has been edited by lviklund (edited 18 October 2006).] IP: Logged | |
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SSC Administrator |
posted 19 October 2006 13:11
In the Oscillator you have independent control over the frequency (how fast you read through the wavetable) and the Formant (the rate at which you reset the phase to 0 and start reading through the wavetable again). In a plain oscillator, you reset the phase to zero once you reach the end of the cycle. But if you change the Formant control, you can have the phase reset occur at a slower rate than the rate at which you read through one full cycle. Could you give a verbal description of the sync behavior you are looking for? IP: Logged | |
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lviklund Member |
posted 19 October 2006 15:18
I (you) have solved my problem. It took quite some time for me to understand what you said in your first reply but it works after some heavy thinking (and use of the oscilloscope). Thank you again IP: Logged | |
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bruno Member |
posted 23 October 2006 02:54
[B]There is one basic thing that I cannot figure out. How do I do a classic analog oscillator sync?
p.s. hm, not so shure, if my uploaded Sound is really uploaded ... IP: Logged | |
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lviklund Member |
posted 23 October 2006 15:27
Bruno Yes, that's exactly the simple "analog" way I wanted. I came up with the same solution last night. I used fullRamp instead of sine since that makes it easy to see what's going on using the scope. I have learned a lot from this silly example. Thank you. /Lasse IP: Logged |
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