Re: [Sursound] Analogue 3D / surround sound panners?

2020-02-17 Thread Lucas
Poop on poop people.  Just do it nicely ok?

On Sat, Feb 15, 2020, 4:51 AM Marc Lavallée  wrote:

> Le 20-02-15 à 07 h 36, Augustine Leudar a écrit :
>
> > What was/is around in terms of analogue physical 3D or horizontal only
> > panners? I've seen the little joystick things on desks. Was wondering
> what
> > else?
>
> Do you mean panners using analog electronics and physical controls to
> pan the sound through analog only electronics (without any computing
> involved),
>
> or physical controllers as input devices for digital sound panners? For
> interactive installations, I built/used/seen:
>
> - big trackballs (like those in vintage video games)
>
> - long levers (like giant joysticks)
>
> - cameras, presence detectors, touch screens...
>
> Basically, any controller can be used.
>
> Marc
>
>
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Re: [Sursound] analog planner

2020-02-17 Thread Dave Malham
Somewhere I have MAG's original handwritten reports for the NRDC on
(analog) soundfield controls, etc. I will see if I can find them tomorrow
and post them. Might be of help to someone.

  Dave

On Mon, 17 Feb 2020 at 14:27, Eero Aro  wrote:

> Oh what the h**k, I cannot find the schematics from Motherlode.
>
> Here you are:
>
> https://www.dropbox.com/sh/u4erj032gxafsd5/AAAEdeRr-FVm9YOK13OwtN2Ra?dl=0
>
> Eero
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-- 

As of 1st October 2012, I have retired from the University.

These are my own views and may or may not be shared by the University

Dave Malham
Honorary Fellow, Department of Music
The University of York
York YO10 5DD
UK

'Ambisonics - Component Imaging for Audio'
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Re: [Sursound] analog planner

2020-02-17 Thread Augustine Leudar
Tx Eero

On Monday, 17 February 2020, Eero Aro  wrote:

> And sorry, no parts list for the Pan/Rotate unit.
>
> Eero
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-- 
Artist website: www.augustineleudar.com
Business website: www.magikdoor.net
+44(0)7555784775
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Re: [Sursound] analog planner

2020-02-17 Thread Eero Aro

And sorry, no parts list for the Pan/Rotate unit.

Eero
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Re: [Sursound] analog planner

2020-02-17 Thread Eero Aro

Oh what the h**k, I cannot find the schematics from Motherlode.

Here you are:

https://www.dropbox.com/sh/u4erj032gxafsd5/AAAEdeRr-FVm9YOK13OwtN2Ra?dl=0

Eero
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Re: [Sursound] analog planner

2020-02-17 Thread Eero Aro
Finally, a Transcoder unit generating 2-channel UHJ only could be fed 
with stereo signals for front and rear stages with a stage width control 
on each.


The Transcoder also has an B-Format input in an 5-pin XLR connector.

Eero
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Re: [Sursound] analog planner

2020-02-17 Thread Eero Aro

The schematics are in the Ambisonic Motherlode:

http://decoy.iki.fi/dsound/ambisonic/motherlode/

Somewhere in there..

Eero


Richard Elen kirjoitti 17.2.2020 klo 11:57:
The Audio & Design Recording boxes that Geoff Barton designed were 
intended as (analogue) outboard units that could be patched into a 
conventional mixing console to generate (mainly) first-order (all there 
was) Ambisonic B-Format.


The Pan-Rotate unit included eight 360-degree controls, each with a 
radius vector (distance from centre) control with a switched position 
for maximum radius vector. In addition there was a B-Format Converter 
which allowed console panpots to be used to pan across a quadrant, using 
four groups and an aux send.


Finally, a Transcoder unit generating 2-channel UHJ only could be fed 
with stereo signals for front and rear stages with a stage width control 
on each.


The units are described in these articles:

http://ambisonic.net/branwell_arb.html

http://ambisonic.net/ambimix.html

I'm afraid I don't have circuit diagrams but Geoff presumably has.

--R

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Re: [Sursound] analog planner

2020-02-17 Thread Richard Elen
The Audio & Design Recording boxes that Geoff Barton designed were 
intended as (analogue) outboard units that could be patched into a 
conventional mixing console to generate (mainly) first-order (all there 
was) Ambisonic B-Format.


The Pan-Rotate unit included eight 360-degree controls, each with a 
radius vector (distance from centre) control with a switched position 
for maximum radius vector. In addition there was a B-Format Converter 
which allowed console panpots to be used to pan across a quadrant, using 
four groups and an aux send.


Finally, a Transcoder unit generating 2-channel UHJ only could be fed 
with stereo signals for front and rear stages with a stage width control 
on each.


The units are described in these articles:

http://ambisonic.net/branwell_arb.html

http://ambisonic.net/ambimix.html

I'm afraid I don't have circuit diagrams but Geoff presumably has.

--R

On 16-Feb-20 15:18, Peter Carbines wrote:

On 16/02/2020 12:19, Augustine Leudar wrote:

I'm mainly interested in purely analog devices in this thread


The small team I was involved in during the 1970s built a 4-input 
proof-of-concept Ambisonic mixer. We were interested in developing a 
mixer to produce B-format from multitrack recordings, creating an 
artificial soundfield.


It had 360-degree panning ability and radius-vector control on each. 
Two input channels used sine-cosine 360 degree potentiometers derived 
from scrapped electronics, probably radar consoles. Because we were 
unfunded and basically running on 'pocket money', the budget didn't 
allow for 4 sine-cosine pots so we designed and built two switchable 
pan-pots, initially 30-degree but planned for an eventual 15 degrees. ...

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