Ambisonic UHJ decoders
Here are corrections to the Gerzon "Multi-system Ambisonic Decoder"
published in Wireless World magazine, July and August, 1977.
Corrections to the phase shift circuits (Fig 1, pg 69, Aug 1977 and
m/l on pg 73 of same issue:
Reference Designator(s) m/l value correct value
C16 1nF 1nF
C17 1nF 1nF
R147 22k 22.1k
R146 56k 50.339k
R145+R144 105.6k 120.041k
R143+R142 (1) 50.3k 55.772k
C13 0.1uF 0.1uF
C12 0.1uF 0.1uF
R135 12k 12.1k
R134 47k 22.006k
R133 47k 115.860k
R132 22k 47.235k
C15 27nF 47nF
C14 27nF 47nF
R141 22k 22.1k
R140 39k 20.122k
R139+R138 105.6k 120.108k
R137+R136 35k 22.315k
C11 470pF 470pF
C10 470pF 470pF
R131 12k 12.1k
R130+R129 50.9k 23.809k
R128 47k 115.655k
R127+R126 23.8k 50.941k
Notes:
1 - R142 on schematic incorrectly listed as R152 on material list
2 - Capacitors are chosen to be standard values most closely
matching
Gerzon values (except C14/15 which were typos)
3 - Resistors are either standard 1% (E96) values (where choice is
'arbitrary') or calculated ideal values to 5 or 6 digits of
precision.
4 - Capacitors should be selected to 1% tolerance
(or purchased that way)
5 - Resistors should be selected from nearest standard 1% value or
made of series/parallel combination to get closer to exact value
Last updated (formatted) September 26th 2005.
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-----Original Message-----
From: Dave Malham
Sent: Wednesday, October 28, 2015 4:45 AM
To: Surround Sound discussion group
Subject: Re: [Sursound] Integrex decoder
Hi Giovanni,
Still hasn't gotten through - maybe you should email it direct to me
rather than through the sursound list...
Dave
On 27 October 2015 at 21:38, <tryp...@comcast.net> wrote:
Let me try again.
Giovanni
-----Original Message----- From: Dave Malham
Sent: Tuesday, October 27, 2015 12:14 PM
To: Surround Sound discussion group
Subject: Re: [Sursound] Integrex decoder
Thanks!
Dave
On 27 October 2015 at 16:00, <tryp...@comcast.net> wrote:
I have it.
Give me a day to locate and scan it and I will send it to you.
Giovanni Abrate
-----Original Message----- From: Dave Malham
Sent: Tuesday, October 27, 2015 11:12 AM
To: Surround Sound discussion group
Subject: [Sursound] Integrex decoder
Hi Folks,
I was looking out my documentation for the Integrex decoder and I seem
to be missing the addendum sheet that I had covering the mods to change
one
of the mods (H or 45J, can't remember which) to UHJ, which wasn't in the
original Wireless World design. Anyone got a copy?
Dave
--
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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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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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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