Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-30 Thread Fernando Lopez-Lezcano

On 10/15/2015 01:37 PM, Jörn Nettingsmeier wrote:

On 10/15/2015 10:07 PM, Steven Boardman wrote:

Subs are a must. The more you have, the more even the response around the
room?


Yes, and the better your LF localisation. Ideally, we'd want to do a
separate decode for the subs, not just simple bass management (although
the latter is better than nothing, of course).


I have been doing this in the concerts I do here at Stanford, 24 mains 
in a 12 + 8 + 4 configuration (or 25 in 12 + 8 + 4 + 1) plus up to 8 
subs in a ring. Separate ADT calculated decoders for both (thanks 
Aaron!). Plus DRC calculated filters for best impulse and frequency 
response. The end result once everything is calibrated sounds very good, 
if I may say.


-- Fernando

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Re: [Sursound] SQ QUAD

2015-10-30 Thread Geoffrey Barton
> 
> Message: 2
> Date: Thu, 29 Oct 2015 13:44:35 -0400
> From: "Ronald C.F. Antony" 
> To: Surround Sound discussion group 
> Subject: Re: [Sursound] SQ QUAD
> Message-ID: <8831d411-7334-4736-86a5-a450b42df...@cubiculum.com>
> Content-Type: text/plain; charset=utf-8
> 
> On Oct 29, 2015, at 12:22, Geoffrey Barton  wrote:
> 
>> On Oct 29, 2015, at 04:41, Dave Malham  wrote:
>> 
>>> 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'.
> 
> Any relation to what Meridian calls ?SuperStereo??

no


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Re: [Sursound] SQ QUAD

2015-10-30 Thread Dave Malham
Kind of thought it might be that - purely manual, or was there any signal
dependent stuff going on?

Dave

On 30 October 2015 at 16:13, Geoffrey Barton  wrote:

>
> >
> > Message: 3
> > Date: Thu, 29 Oct 2015 18:58:34 +
> > From: Dave Malham 
> > To: Surround Sound discussion group 
> > Subject: Re: [Sursound] Sursound Digest, Vol 87, Issue 20
> > Message-ID:
> >   <
> capw+1zqb2hl_mpro1dgl44pctu81uupstxq6kwmh3whkw2p...@mail.gmail.com>
> > Content-Type: text/plain; charset="utf-8"
> >
> > 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.
>
> I think we wrote an AES about it.
>
> but the clue is in the name. Start with the 'preference' bit, usually
> 'forward preference', now allow it to point in any direction over 360
> degrees (indeed 4∏ steradians :-)
>
>
>
> 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'
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Re: [Sursound] Sursound Digest, Vol 87, Issue 20

2015-10-30 Thread Dave Malham
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  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 
> wrote:
>
>>
>> >
>> > Message: 1
>> > Date: Thu, 29 Oct 2015 08:41:25 +
>> > From: Dave Malham 
>> > To: Surround Sound discussion group 
>> > Subject: Re: [Sursound] SQ QUAD
>> > Message-ID:
>> >   > cy_l...@mail.gmail.com>
>> > 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
>>
>>
>>
>> ___
>> Sursound mailing list
>> Sursound@music.vt.edu
>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
>> edit account or options, view archives and so on.
>>
>
>
>
> --
>
> 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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Re: [Sursound] SQ QUAD

2015-10-30 Thread Geoffrey Barton
> 
> Message: 4
> Date: Thu, 29 Oct 2015 20:07:59 +
> From: Peter Lennox 
> To: Surround Sound discussion group 
> Subject: Re: [Sursound] SQ QUAD
> Message-ID:
>   
> <28f33490c302424e98cc6dc2531b2048010969e41...@mkt-mbx01.university.ds.derby.ac.uk>
>   
> Content-Type: text/plain; charset="Windows-1252"
> 
> or does it bear some relationship to variable order panning (I remember my 
> colleague Bruce Wiggins's  work on higher order ambisonic panning for 
> decoding to 5.1)?

no, it is purely a decoding technique, mainly for 2 channel material. In 1977 
it was very hard to do

Geoffrey
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Re: [Sursound] SQ QUAD

2015-10-30 Thread Geoffrey Barton

> 
> Message: 3
> Date: Thu, 29 Oct 2015 18:58:34 +
> From: Dave Malham 
> To: Surround Sound discussion group 
> Subject: Re: [Sursound] Sursound Digest, Vol 87, Issue 20
> Message-ID:
>   
> Content-Type: text/plain; charset="utf-8"
> 
> 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.

I think we wrote an AES about it. 

but the clue is in the name. Start with the 'preference' bit, usually 'forward 
preference', now allow it to point in any direction over 360 degrees (indeed 4∏ 
steradians :-)



Geoffrey


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