Doepfer

Hi - I'm wondering what the options are very VERY slow (several minutes hopefully) are for VCLFOs that produce sine waves. At the moment I'm using the Triangle waves from A 143-4s but sometimes sines would be more pleasing. It is about creating slow changing drones. I'm using a sine wave going to an FM Aid where it is folded before going into an A116 which is being modulated by the Sawtooth from the same oscillator. The FM Aid is using an other (harmonically related) sine to modulate the first sines folding. Various parts of the process are in turn very slowly being modulated by the LFOs so that slow drifts occur. ItS especially interesting watching it on the oscilloscope :-) Very slight (+/- 1 hertz or so) variance in the FM Aid's modulating sine's frequency gives lovely "waterfall" effects on the oscilloscope screen - waves running one way and then slowly stopping to run in the other direction. It would be nice to be able to project the oscilloscope trace onto the walls and ceiling :-) 

I'm gonna get an A113 so that I can have Sawtooth Waves to drive  the A116 with phase related but much lower frequencies. But I'm wondering - what would it be like to take the basic Saw out the A113 into my A137-2 and then very slowly move the phase of the Saw about with other LFOs?

David

www.movingisliving.co.uk

Sent from my iPhone

> Hi - I'm wondering what the options are very VERY slow (several minutes hopefully) are for VCLFOs that produce sine
> waves. At the moment I'm using the Triangle waves from A 143-4s but sometimes sines would be more pleasing. It is about
> creating slow changing drones. I'm using a sine wave going to an FM Aid where it is folded before going into an A116
> which is being modulated by the Sawtooth from the same oscillator. The FM Aid is using an other (harmonically related)
> sine to modulate the first sines folding. Various parts of the process are in turn very slowly being modulated by the
> LFOs so that slow drifts occur. ItS especially interesting watching it on the oscilloscope :-) Very slight (+/- 1 hertz
> or so) variance in the FM Aid's modulating sine's frequency gives lovely "waterfall" effects on the oscilloscope screen -
> waves running one way and then slowly stopping to run in the other direction. It would be nice to be able to project the
> oscilloscope trace onto the walls and ceiling :-)
>
> I'm gonna get an A113 so that I can have Sawtooth Waves to drive  the A116 with phase related but much lower frequencies.
> But I'm wondering - what would it be like to take the basic Saw out the A113 into my A137-2 and then very slowly move the
> phase of the Saw about with other LFOs?
>
> David
>
> www.movingisliving.co.uk

When an external negative CV is applied the A-143-9 can be used for very slow sine waves. Alternatively the internal frequency
offset trimmping potentiometer P3 can be re-adjusted for very slow frequencies without the need of an external negative CV.

Also the planned A-110-4 will be able to generate very slow sine waves when you adjust the linear frequency control near to zero Hz.

Best wishes
Dieter Doepfer