Well, I tracked down at least one source for my memory - the pdf of what is
claimed to be the"original design documents" for the Minim AD7, which can
be found here - https://sites.google.com/site/minimdecoders/
Not that it tells you much - just a section (on page 9) on what you can
expect out of a "Variable Preference Decoder" for "Normal UHJ", "Fwd UHJ"
and "Bkwrd UHJ" In fact, this doesn't seem to relate to the design
presented - maybe it was included in the scan accidentally.
Dave
On 29 October 2015 at 18:58, Dave Malham <[email protected]> wrote:
> Hi Geofrey,
> Thanks for the info - now you mention it, VDP strikes a faint chord in
> my memory, I wonder if maybe either Michael or Peter mentioned at some
> point when we talking all those years ago.
>
> Of course, you know what's going to happen next - someone is going to ask
> for design info.....
>
> Dave
>
> On 29 October 2015 at 16:22, Geoffrey Barton <[email protected]>
> wrote:
>
>>
>> >
>> > Message: 1
>> > Date: Thu, 29 Oct 2015 08:41:25 +0000
>> > From: Dave Malham <[email protected]>
>> > To: Surround Sound discussion group <[email protected]>
>> > Subject: Re: [Sursound] SQ QUAD
>> > Message-ID:
>> > <CAPw+1zQbO7m17JRTp6NbDti0jyDONUnPyCgmZVJTG7=
>> [email protected]>
>> > Content-Type: text/plain; charset="utf-8"
>> >
>> > Going back to this old theme, something which slipped under my radar but
>> > reappeared when I was re-reading the Integrex decoder articles was
>> > Michael's throw-away statement on page 3 that "...a fully fledged
>> ambisonic
>> > 'variable matrix' design is under development for (such) specialist
>> > applications". Does anyone (Geof Barton, Peter Craven, Peter Carbines,
>> > Richard lee...) remember this or know anything about it - certainly
>> nothing
>> > remains in my memory, even if it was there in the first place.
>>
>> Certainly. It was called the 'VDP' decoder, 'Variable Directional
>> Preference'.
>>
>> Michael and I had great fun with that; it revealed all sorts of detail in
>> stereo recordings played through it, quite apart from the effect on UHJ.
>> I believe that, some time after I left the Cybernetics dept, to quote
>> Peter Fellgett, 'a student destroyed it by connecting 240v into the 5v
>> supply'.
>>
>> rgds,
>> Geoffrey
>>
>>
>>
>> _______________________________________________
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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'
>
--
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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