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 Post subject: Sine OSC with phase shift option or cos osc
PostPosted: Mon Oct 03, 2016 2:39 am 
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Do we have an osc, where I can either select sin or cos or do an arbitrarily phase shift? I need this for my resynth project.


Last edited by DragonSF on Mon Oct 03, 2016 8:05 pm, edited 2 times in total.

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 Post subject: Re: Sine OSC with pahse shift option
PostPosted: Mon Oct 03, 2016 5:00 am 
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no :/

only place in scope with that is via flexor oscs in modular at the moment. but hey, build it mate! not just a sine, all shapes with phase input would rock in sdk

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 Post subject: Re: Sine OSC with phase shift option
PostPosted: Mon Oct 03, 2016 3:44 pm 
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As soon as the dongle arrives consider it done!


Last edited by DragonSF on Mon Oct 03, 2016 3:48 pm, edited 1 time in total.

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 Post subject: Re: Sine OSC with pahse shift option
PostPosted: Mon Oct 03, 2016 3:46 pm 
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you need a dongle for that?


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 Post subject: Re: Sine OSC with phase shift option
PostPosted: Mon Oct 03, 2016 3:50 pm 
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Yes, I have to create an osc in dsp. Not possible else (I think). Please correct me, if I'm wrong.
Reason: I need 32 of those, do this on the PC will not work in real time.


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 Post subject: Re: Sine OSC with phase shift option
PostPosted: Mon Oct 03, 2016 3:52 pm 
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there are a bunch of oscs in modular.


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 Post subject: Re: Sine OSC with phase shift option
PostPosted: Mon Oct 03, 2016 3:54 pm 
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Not any one with phase shift option (AFAIK). I need one either sin or cos waveform (dynamically changeable).


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 Post subject: Re: Sine OSC with phase shift option
PostPosted: Mon Oct 03, 2016 3:56 pm 
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why not take an existing design and add the phase shift?
i'm pretty sure that what you want can be realized without any special code.


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 Post subject: Re: Sine OSC with phase shift option
PostPosted: Mon Oct 03, 2016 4:03 pm 
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If there is a phase shifter, which is voltage controlled (i.e. controlled by the frequency of the osc), that would be fine. I haven't found one.
Though I found one Modular osc, which can produce either sin or cos. I have to dig deeper into that (i.e. if it doesn't consume too much DSP).


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 Post subject: Re: Sine OSC with phase shift option
PostPosted: Mon Oct 03, 2016 4:46 pm 
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control is control, isn't it?
i think it's doable, but of course, i'm not a developer...


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 Post subject: Re: Sine OSC with phase shift option
PostPosted: Mon Oct 03, 2016 5:07 pm 
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yes, it's definitely doable, provided the phase-shifter as such is available (not to be confused with a phaser). Even a variable delay or allpass filter can be used. But all these are atomic functions.


Last edited by DragonSF on Mon Oct 03, 2016 8:04 pm, edited 1 time in total.

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 Post subject: Re: Sine OSC with phase shift option
PostPosted: Mon Oct 03, 2016 5:14 pm 
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sure, but they exist afaik.


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 Post subject: Re: Sine OSC with phase shift option or cos osc
PostPosted: Tue Oct 04, 2016 4:11 am 
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I found out, I can use the complex sine osc with a 2:1 switch.


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 Post subject: Re: Sine OSC with phase shift option or cos osc
PostPosted: Tue Oct 04, 2016 10:26 am 
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cool!


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 Post subject: Re: Sine OSC with phase shift option or cos osc
PostPosted: Tue Oct 04, 2016 8:31 pm 
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can you explain that? what do you mean use it with a 2:1 switch?

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 Post subject: Re: Sine OSC with phase shift option or cos osc
PostPosted: Wed Oct 05, 2016 3:24 pm 
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faxinadu wrote:
can you explain that? what do you mean use it with a 2:1 switch?

For resynthesis you need either sin or cos signal. The atom has 2 outs (sin and cos), so you need a 2:1 (sin or cos-> next stage). This can be switched dynamically (async).Ecample:
Attachment:
PArt OSC.png
PArt OSC.png [ 28.11 KiB | Viewed 505 times ]


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 Post subject: Re: Sine OSC with phase shift option or cos osc
PostPosted: Wed Oct 05, 2016 8:45 pm 
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very nice!!!!

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 Post subject: Re: Sine OSC with phase shift option or cos osc
PostPosted: Wed Oct 05, 2016 9:54 pm 
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Thanks.
And this is the result:
Attachment:
resynth.png
resynth.png [ 44.21 KiB | Viewed 497 times ]


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 Post subject: Re: Sine OSC with phase shift option or cos osc
PostPosted: Mon Oct 10, 2016 8:21 pm 
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Attachment:
Tanpura-synth.mp3 [59.31 KiB]
Downloaded 47 times
And that's how it sounds (tanpura profile)


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 Post subject: Re: Sine OSC with phase shift option or cos osc
PostPosted: Mon Oct 10, 2016 8:30 pm 
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cool!


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