[sdiy] Panning in Quad Resources and Docs

[Dakota Melin]

when I mentioned this idea in my local synth group I was linked to that
album immediately! Will have to figure out how to set up a quad system here
at some point, definitely.
-dk

On Mon, Apr 20, 2020 at 1:38 PM John Marshall <wa7bsr at gmail.com> wrote:

> This is just a side note: Morton Subotnick's album 'Touch' was recorded in
> quad. I heard it performed live at WWU. Excellent!
>
> On Mon, Apr 20, 2020 at 9:52 AM Dakota Melin <dksynth at gmail.com> wrote:
>
>> Hi,
>>
>> nice to hear someone is interested :) quad lives!
>>
>> A scanner is one way to do it but the person I have in mind for this is
>> more interested in gestural motions so dual voltages for X, Y positioning
>> is more convenient I think.
>>
>> I'm happy to chat about the fundamentals of the idea, the circuit itself
>> is not really finished yet.
>>
>> What I'm playing with right now derives "quadrant" voltages from joystick
>> X and Y inputs to control 4 VCAs that would be for Front Right, Rear Right,
>> Rear Left and Front Left speakers. There is equal power breakpoint panning
>> between adjacent channels. The equal power law is adjustable, I'm not sure
>> which would be most appropriate yet (-3dB, -4.5dB, -6dB). Single-axis
>> panning goes down to full closed in the center and back up when going
>> straight across. Controlling it with a joystick, joystick straight forward
>> sound would come out of both front speakers at a slightly reduced
>> amplitude, rotating joystick to the right it would come out stronger out of
>> only the front right speaker, and as you continued to rotate around it
>> would crossfade smoothly from speaker to speaker.
>>
>> here is the simulation fully rotating around:
>> https://imgur.com/a/gpEKb8V
>>
>> and here is the simulation of single axis front-to-back motion:
>> https://imgur.com/a/Pt6SyTf
>>
>> best,
>> -dk
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> On Mon, Apr 20, 2020 at 10:49 AM ulfur hansson <ulfurh at gmail.com> wrote:
>>
>>> i'd be highly intrigued in learning more about this subject as well. it
>>> would basically need an equal power interpolating scanner?
>>>
>>> if you are willing please share!
>>>
>>> many thanks,
>>> -úlfur
>>>
>>> mán., 20. apr. 2020 kl. 01:58 skrifaði Dakota Melin <dksynth at gmail.com>:
>>>
>>>> Hi everyone,
>>>>
>>>> I've been playing around with some ways to pan signals in quad systems
>>>> this weekend and I'm looking for resources on the subject.
>>>>
>>>> https://i.imgur.com/3UIU7gG.png
>>>>
>>>> Serge T mentioned a CalArts paper on the subject by Darrell Johansen. I
>>>> would be interested if anyone knows where to find a copy of that for me to
>>>> read, or anything else that may be relevant.
>>>>
>>>> best,
>>>>
>>>> -dk
>>>> _______________________________________________
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>>>
>>>
>>> --
>>> •
>>> ulfurhansson.com
>>> cargocollective.com/ulfur
>>> instagram.com/ulfur_
>>> .•°~ Úlfur - Arborescence on Spotify
>>> <https://open.spotify.com/album/118CEJliIg47Jcr70y7Kww>
>>>
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>
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