http://www.eokuwwy.com
CV Mod
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- KVRAF
- 2818 posts since 30 Aug, 2001 from where dinosaurs are still alive
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- KVRist
- 255 posts since 2 Feb, 2007 from German Guy in Tokyo
Well, technically no. The iPad etc. cannot generate CV, aka constant voltage signals. Audio interfaces with DC-coupled outputs can generate CV, e.g. Presonus Studio 26 / 68 or MOTU.
from the description: "CV Mod is a 2 LFO/VCO Oscillator Module". So it just uses audio as CV - different thing.
The adapted interface might be of worth it though.
Also I am really wondering how they generate signals below 20Hz. Most consumer and quite a few professional DACs won't go below 20Hz. RME UFX II does 2Hz, UCX does 6Hz but it's still quite rare.
BTW: This little bugger can generate real CV over BTLE from the iPad:
http://quicco.co.jp/mi1e/
from the description: "CV Mod is a 2 LFO/VCO Oscillator Module". So it just uses audio as CV - different thing.
The adapted interface might be of worth it though.
Also I am really wondering how they generate signals below 20Hz. Most consumer and quite a few professional DACs won't go below 20Hz. RME UFX II does 2Hz, UCX does 6Hz but it's still quite rare.
BTW: This little bugger can generate real CV over BTLE from the iPad:
http://quicco.co.jp/mi1e/
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- KVRAF
- Topic Starter
- 2818 posts since 30 Aug, 2001 from where dinosaurs are still alive
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- KVRer
- 21 posts since 19 Dec, 2012
Correct, it is the sound that's generating the voltage. Originally, I wanted to send out a continuous CV signal, with the amount of voltage changing according to the pressure of your finger on the screen. But that's not possible, unfortunately. From what I understand, you can get about 1.5 volts out of the device at full volume.
In this video, I use a little bluetooth module which must have a built in amp, because the difference is very noticeable. I don't really have the tools to measure it though. I just submitted the next version to the App Store, which adds the ability to invert the envelopes and to also use the envelopes to affect the oscillator frequency.
BTW, it absolutely does work at very slow rates. Works best with a sine wave.
I use the open source AudioKit framework for all sound generation and also for MIDI. Have to give them props whenever I can.
https://audiokit.io/
Please let me know if you have any questions or if you've tried it and what you think.
Cheers!
In this video, I use a little bluetooth module which must have a built in amp, because the difference is very noticeable. I don't really have the tools to measure it though. I just submitted the next version to the App Store, which adds the ability to invert the envelopes and to also use the envelopes to affect the oscillator frequency.
BTW, it absolutely does work at very slow rates. Works best with a sine wave.
I use the open source AudioKit framework for all sound generation and also for MIDI. Have to give them props whenever I can.
https://audiokit.io/
Please let me know if you have any questions or if you've tried it and what you think.
Cheers!
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- KVRist
- 255 posts since 2 Feb, 2007 from German Guy in Tokyo
thanks for the feed back, rabbit,
much appreciated
much appreciated