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Don Pearce Don Pearce is offline
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Default Alan Blumlein on radio tonight

BBC Radio4's Archive Hour tonight at 8pm (UK) is all about Alan
Blumlein, and apparently has a load of his original recordings. Here's a
sample of a stereo test he did in the 1930s - I just grabbed it off the
trailer. There would have been more but Audition is really slow to fire
up when you want it in a hurry.

http://81.174.169.10/odds/blumlein.mp3

d
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Peter Larsen[_3_] Peter Larsen[_3_] is offline
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Default Alan Blumlein on radio tonight

Don Pearce wrote:

BBC Radio4's Archive Hour tonight at 8pm (UK) is all about Alan
Blumlein, and apparently has a load of his original recordings.
Here's a sample of a stereo test he did in the 1930s - I just grabbed
it off the trailer. There would have been more but Audition is really
slow to fire up when you want it in a hurry.


http://81.174.169.10/odds/blumlein.mp3


Phase diagram is real funny to look at ...

d


Kind regards

Peter Larsen



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Don Pearce Don Pearce is offline
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Default Alan Blumlein on radio tonight

Peter Larsen wrote:
Don Pearce wrote:

BBC Radio4's Archive Hour tonight at 8pm (UK) is all about Alan
Blumlein, and apparently has a load of his original recordings.
Here's a sample of a stereo test he did in the 1930s - I just grabbed
it off the trailer. There would have been more but Audition is really
slow to fire up when you want it in a hurry.


http://81.174.169.10/odds/blumlein.mp3


Phase diagram is real funny to look at ...

d


Kind regards

Peter Larsen




I suspect the mics' polar patterns weren't of the finest.

d
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William Sommerwerck William Sommerwerck is offline
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Default Alan Blumlein on radio tonight

I suspect the mics' polar patterns weren't of the finest.

"Polar patterns"? They were probably omnis. (And, yes, I know that omnis
don't necessarily have the same on- and off-axis responses.)


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Don Pearce Don Pearce is offline
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Default Alan Blumlein on radio tonight

William Sommerwerck wrote:
I suspect the mics' polar patterns weren't of the finest.


"Polar patterns"? They were probably omnis. (And, yes, I know that omnis
don't necessarily have the same on- and off-axis responses.)



Omnis? This is THE Mr. Blumlein we are talking about here, you know.

d


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Edi Zubovic[_2_] Edi Zubovic[_2_] is offline
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Default Alan Blumlein on radio tonight

On Sat, 02 Aug 2008 07:59:38 +0100, Don Pearce
wrote:

BBC Radio4's Archive Hour tonight at 8pm (UK) is all about Alan
Blumlein, and apparently has a load of his original recordings. Here's a
sample of a stereo test he did in the 1930s - I just grabbed it off the
trailer. There would have been more but Audition is really slow to fire
up when you want it in a hurry.

http://81.174.169.10/odds/blumlein.mp3

d

Thank you, I'd wish you had more of that. These are interesting stereo
recordings to investigate. Try to invert the right channel and sum up
into mono, you'll get some interesting cancellarions.

Edi Zubovicc, Crikvenica, Croatia
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Don Pearce Don Pearce is offline
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Default Alan Blumlein on radio tonight

Edi Zubovic wrote:
On Sat, 02 Aug 2008 07:59:38 +0100, Don Pearce
wrote:

BBC Radio4's Archive Hour tonight at 8pm (UK) is all about Alan
Blumlein, and apparently has a load of his original recordings. Here's a
sample of a stereo test he did in the 1930s - I just grabbed it off the
trailer. There would have been more but Audition is really slow to fire
up when you want it in a hurry.

http://81.174.169.10/odds/blumlein.mp3

d

Thank you, I'd wish you had more of that. These are interesting stereo
recordings to investigate. Try to invert the right channel and sum up
into mono, you'll get some interesting cancellarions.

Edi Zubovicc, Crikvenica, Croatia


You can listen on line - they stream.

d
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Don Pearce Don Pearce is offline
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Default Alan Blumlein on radio tonight

Edi Zubovic wrote:
On Sat, 02 Aug 2008 07:59:38 +0100, Don Pearce
wrote:

BBC Radio4's Archive Hour tonight at 8pm (UK) is all about Alan
Blumlein, and apparently has a load of his original recordings. Here's a
sample of a stereo test he did in the 1930s - I just grabbed it off the
trailer. There would have been more but Audition is really slow to fire
up when you want it in a hurry.

http://81.174.169.10/odds/blumlein.mp3

d

Thank you, I'd wish you had more of that. These are interesting stereo
recordings to investigate. Try to invert the right channel and sum up
into mono, you'll get some interesting cancellarions.

Edi Zubovicc, Crikvenica, Croatia


You know what? I get a much more stable set of images having inverted
one channel. I wonder if he got the polarity wrong all those years ago.
Or maybe something has happened to it since.

d
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Edi Zubovic[_2_] Edi Zubovic[_2_] is offline
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Default Alan Blumlein on radio tonight

On Sat, 02 Aug 2008 16:43:58 +0100, Don Pearce
wrote:

Edi Zubovic wrote:
On Sat, 02 Aug 2008 07:59:38 +0100, Don Pearce
wrote:

BBC Radio4's Archive Hour tonight at 8pm (UK) is all about Alan
Blumlein, and apparently has a load of his original recordings. Here's a
sample of a stereo test he did in the 1930s - I just grabbed it off the
trailer. There would have been more but Audition is really slow to fire
up when you want it in a hurry.

http://81.174.169.10/odds/blumlein.mp3

d

Thank you, I'd wish you had more of that. These are interesting stereo
recordings to investigate. Try to invert the right channel and sum up
into mono, you'll get some interesting cancellarions.

Edi Zubovicc, Crikvenica, Croatia


You know what? I get a much more stable set of images having inverted
one channel. I wonder if he got the polarity wrong all those years ago.
Or maybe something has happened to it since.

d

Yes I've found that too. After reversing the right channel, I've got
better results but less mono compatibility, there are some
cancellations. It can be a tape alignment issue, too. Anyway, it seems
that a channel is reversed indeed. I usually don't trust a correlation
meter is such cases since there isn't much intensity stereo but the
meter "pulls" to the wrong left side too much. Also, a m-s matrix
yields m side lower than s side so it seems a channel is reversed
indeed. The guys seemed to play a card game for this test.

Thanks for pointing out, I'll try to catch this.

Edi Zubovic, Crikvenica, Croatia

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Mike Rivers Mike Rivers is offline
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Default Alan Blumlein on radio tonight

Don Pearce wrote:

You know what? I get a much more stable set of images having inverted
one channel. I wonder if he got the polarity wrong all those years ago.
Or maybe something has happened to it since.


I often find that things like that happen with MP3 conversion. A channel
will get inverted, or the left and right channels will mysteriously
swap, and then return to their original position. If there's a computer
involved, it'll screw you some time or other.

--
If you e-mail me and it bounces, use your secret decoder ring and reach
me he
double-m-eleven-double-zero at yahoo -- I'm really Mike Rivers
)


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Paul Stamler Paul Stamler is offline
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Default Alan Blumlein on radio tonight

"Don Pearce" wrote in message
...
William Sommerwerck wrote:
I suspect the mics' polar patterns weren't of the finest.


"Polar patterns"? They were probably omnis. (And, yes, I know that omnis
don't necessarily have the same on- and off-axis responses.)



Omnis? This is THE Mr. Blumlein we are talking about here, you know.


Yes, but in addition to devising the Blumlein technique of stereo recording
(figure-8 mics, vertically coincident, angled at 90 degrees), he also
investigated recording with spaced omnis.

Peace,
Paul


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William Sommerwerck William Sommerwerck is offline
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Default Alan Blumlein on radio tonight

"Don Pearce" wrote in message
...
William Sommerwerck wrote:
I suspect the mics' polar patterns weren't of the finest.


"Polar patterns"? They were probably omnis. (And, yes, I know that omnis
don't necessarily have the same on- and off-axis responses.)


Omnis? This is THE Mr. Blumlein we are talking about here, you know.


Forgive me. The brain must be in another country. As someone who made many,
many Blumlein recordings, I don't know how I could have made such a mistake.

I think what I was thinking of was the shuffler.


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John B[_2_] John B[_2_] is offline
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Default Alan Blumlein on radio tonight

On 02/08/2008 Edi Zubovic wrote:

On Sat, 02 Aug 2008 07:59:38 +0100, Don Pearce
wrote:

BBC Radio4's Archive Hour tonight at 8pm (UK) is all about Alan
Blumlein, and apparently has a load of his original recordings.
Here's a sample of a stereo test he did in the 1930s - I just
grabbed it off the trailer. There would have been more but Audition
is really slow to fire up when you want it in a hurry.

http://81.174.169.10/odds/blumlein.mp3

d

Thank you, I'd wish you had more of that. These are interesting stereo
recordings to investigate. Try to invert the right channel and sum up
into mono, you'll get some interesting cancellarions.

Edi Zubovicc, Crikvenica, Croatia


Go he http://www.bbc.co.uk/radio4/archivehour/pip/i7o6j/

and click the listen again button. It's only up for seven days after
the broadcast date.

--
John B
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Default Alan Blumlein on radio tonight

William Sommerwerck wrote:

"Don Pearce" wrote in message
...


William Sommerwerck wrote:
I suspect the mics' polar patterns weren't of the finest.


"Polar patterns"? They were probably omnis. (And, yes, I know that
omnis don't necessarily have the same on- and off-axis responses.)


Omnis? This is THE Mr. Blumlein we are talking about here, you know.


Forgive me. The brain must be in another country. As someone who made
many, many Blumlein recordings, I don't know how I could have made
such a mistake.


I think what I was thinking of was the shuffler.


My thought too OR a simple one channel polarity reversal, but I didn't
investigate and eventually I missed it online because of a my new, second
hand, surround receiver. I plain forgot about it. 6 hours vanished in
getting the thing set up just as stereo preamp, including enjoying that its
auto eq function got the loudspeaker bass and low midrange eq just right. I
wish they'd use better qualified staff to translate the manuals ...

Kind regards

Peter Larsen


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Default Alan Blumlein on radio tonight

On 02 Aug 2008 23:16:06 GMT, "John B"
wrote:

On 02/08/2008 Edi Zubovic wrote:

On Sat, 02 Aug 2008 07:59:38 +0100, Don Pearce
wrote:

BBC Radio4's Archive Hour tonight at 8pm (UK) is all about Alan
Blumlein, and apparently has a load of his original recordings.
Here's a sample of a stereo test he did in the 1930s - I just
grabbed it off the trailer. There would have been more but Audition
is really slow to fire up when you want it in a hurry.

http://81.174.169.10/odds/blumlein.mp3

d

Thank you, I'd wish you had more of that. These are interesting stereo
recordings to investigate. Try to invert the right channel and sum up
into mono, you'll get some interesting cancellarions.

Edi Zubovicc, Crikvenica, Croatia


Go he http://www.bbc.co.uk/radio4/archivehour/pip/i7o6j/

and click the listen again button. It's only up for seven days after
the broadcast date.


Thanks for the link, I think I'm having a problem with my Real Player
since my player is still a cute, little and ancient one. I think I'll
have to install the recent player though, together with its tons of
things I don't normally use. I'll try with the "Real Player
Alternative" first.

Edi Zubovic, Crikvenica, Croatia


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Adrian Tuddenham Adrian Tuddenham is offline
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Default Alan Blumlein on radio tonight

Don Pearce wrote:

Edi Zubovic wrote:
On Sat, 02 Aug 2008 07:59:38 +0100, Don Pearce
wrote:

BBC Radio4's Archive Hour tonight at 8pm (UK) is all about Alan
Blumlein, and apparently has a load of his original recordings. Here's a
sample of a stereo test he did in the 1930s - I just grabbed it off the
trailer. There would have been more but Audition is really slow to fire
up when you want it in a hurry.

http://81.174.169.10/odds/blumlein.mp3

d

Thank you, I'd wish you had more of that. These are interesting stereo
recordings to investigate. Try to invert the right channel and sum up
into mono, you'll get some interesting cancellarions.

Edi Zubovicc, Crikvenica, Croatia


You know what? I get a much more stable set of images having inverted
one channel. I wonder if he got the polarity wrong all those years ago.
Or maybe something has happened to it since.



See the pictures of his cutterhead...

http://www.doramusic.com/Binaural%20...%20head%20side
%20view.JPG

http://www.doramusic.com/Binaural%20...%20head%20deta
il.JPG

....he got the polarity right, his recordings used lateral and vertical
modulation for the two channels. What has happened since is that the
BBC has incorrectly played the recordings in 45/45 stereo.


One of Blumlein's original recordings of the Abbey Road stereo tests was
available as a vinyl re-pressing on the 'Symposium' label (Nr: 1028A).
A vector analysis of it only shows strong modulation on one diagonal,
the other diagonal contains a very faint and distorted signal. Some of
Blumlein's tests were performed with spaced omni mics (HB1s?) and the
spacing was varied from zero to various widths, so it seems possible
that this is the test recording made with zero spacing - unfortunately
it was the only one re-issued (although metalwork for the others still
exists).

--
~ Adrian Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk
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Don Pearce Don Pearce is offline
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Default Alan Blumlein on radio tonight

Adrian Tuddenham wrote:
Don Pearce wrote:

Edi Zubovic wrote:
On Sat, 02 Aug 2008 07:59:38 +0100, Don Pearce
wrote:

BBC Radio4's Archive Hour tonight at 8pm (UK) is all about Alan
Blumlein, and apparently has a load of his original recordings. Here's a
sample of a stereo test he did in the 1930s - I just grabbed it off the
trailer. There would have been more but Audition is really slow to fire
up when you want it in a hurry.

http://81.174.169.10/odds/blumlein.mp3

d
Thank you, I'd wish you had more of that. These are interesting stereo
recordings to investigate. Try to invert the right channel and sum up
into mono, you'll get some interesting cancellarions.

Edi Zubovicc, Crikvenica, Croatia

You know what? I get a much more stable set of images having inverted
one channel. I wonder if he got the polarity wrong all those years ago.
Or maybe something has happened to it since.



See the pictures of his cutterhead...

http://www.doramusic.com/Binaural%20...%20head%20side
%20view.JPG

http://www.doramusic.com/Binaural%20...%20head%20deta
il.JPG

....he got the polarity right, his recordings used lateral and vertical
modulation for the two channels. What has happened since is that the
BBC has incorrectly played the recordings in 45/45 stereo.


One of Blumlein's original recordings of the Abbey Road stereo tests was
available as a vinyl re-pressing on the 'Symposium' label (Nr: 1028A).
A vector analysis of it only shows strong modulation on one diagonal,
the other diagonal contains a very faint and distorted signal. Some of
Blumlein's tests were performed with spaced omni mics (HB1s?) and the
spacing was varied from zero to various widths, so it seems possible
that this is the test recording made with zero spacing - unfortunately
it was the only one re-issued (although metalwork for the others still
exists).


Not sure - assuming the 45/45 idea is what has happened, I've done the
necessary sum and difference edit to get vertical and horizontal. The
stereo effect disappears entirely, leaving just a rather shaky central
source. Inverting one channel gives a very clear sound stage with the
players distributed evenly across it. So I think they did do a
conversion from V/H, but got it wrong, ending up with one inverted channel.

d
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Adrian Tuddenham Adrian Tuddenham is offline
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Default Alan Blumlein on radio tonight

Don Pearce wrote:

Adrian Tuddenham wrote:
Don Pearce wrote:

Edi Zubovic wrote:
On Sat, 02 Aug 2008 07:59:38 +0100, Don Pearce
wrote:

BBC Radio4's Archive Hour tonight at 8pm (UK) is all about Alan
Blumlein, and apparently has a load of his original recordings. Here's a
sample of a stereo test he did in the 1930s - I just grabbed it off the
trailer. There would have been more but Audition is really slow to fire
up when you want it in a hurry.

http://81.174.169.10/odds/blumlein.mp3

d
Thank you, I'd wish you had more of that. These are interesting stereo
recordings to investigate. Try to invert the right channel and sum up
into mono, you'll get some interesting cancellarions.

Edi Zubovicc, Crikvenica, Croatia
You know what? I get a much more stable set of images having inverted
one channel. I wonder if he got the polarity wrong all those years ago.
Or maybe something has happened to it since.



See the pictures of his cutterhead...

http://www.doramusic.com/Binaural%20...%20head%20side
%20view.JPG

http://www.doramusic.com/Binaural%20...%20head%20deta
il.JPG

....he got the polarity right, his recordings used lateral and vertical
modulation for the two channels. What has happened since is that the
BBC has incorrectly played the recordings in 45/45 stereo.


One of Blumlein's original recordings of the Abbey Road stereo tests was
available as a vinyl re-pressing on the 'Symposium' label (Nr: 1028A).
A vector analysis of it only shows strong modulation on one diagonal,
the other diagonal contains a very faint and distorted signal. Some of
Blumlein's tests were performed with spaced omni mics (HB1s?) and the
spacing was varied from zero to various widths, so it seems possible
that this is the test recording made with zero spacing - unfortunately
it was the only one re-issued (although metalwork for the others still
exists).


Not sure - assuming the 45/45 idea is what has happened, I've done the
necessary sum and difference edit to get vertical and horizontal. The
stereo effect disappears entirely, leaving just a rather shaky central
source. Inverting one channel gives a very clear sound stage with the
players distributed evenly across it. So I think they did do a
conversion from V/H, but got it wrong, ending up with one inverted channel.


I think you're right. I wonder where the mistake occurred and why it
wasn't spotted before transmission?


--
~ Adrian Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk
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Default Alan Blumlein on radio tonight

On Sun, 03 Aug 2008 19:39:41 +0100, Don Pearce
wrote:
-------------------8-----------------------------
You know what? I get a much more stable set of images having inverted
one channel. I wonder if he got the polarity wrong all those years ago.
Or maybe something has happened to it since.



See the pictures of his cutterhead...

http://www.doramusic.com/Binaural%20...%20head%20side
%20view.JPG

http://www.doramusic.com/Binaural%20...%20head%20deta
il.JPG

....he got the polarity right, his recordings used lateral and vertical
modulation for the two channels. What has happened since is that the
BBC has incorrectly played the recordings in 45/45 stereo.


One of Blumlein's original recordings of the Abbey Road stereo tests was
available as a vinyl re-pressing on the 'Symposium' label (Nr: 1028A).
A vector analysis of it only shows strong modulation on one diagonal,
the other diagonal contains a very faint and distorted signal. Some of
Blumlein's tests were performed with spaced omni mics (HB1s?) and the
spacing was varied from zero to various widths, so it seems possible
that this is the test recording made with zero spacing - unfortunately
it was the only one re-issued (although metalwork for the others still
exists).


Not sure - assuming the 45/45 idea is what has happened, I've done the
necessary sum and difference edit to get vertical and horizontal. The
stereo effect disappears entirely, leaving just a rather shaky central
source. Inverting one channel gives a very clear sound stage with the
players distributed evenly across it. So I think they did do a
conversion from V/H, but got it wrong, ending up with one inverted channel.



-- I just downloaded a Gerzon's article about Blumlein's shuffling
techniques ("Applications of Blumlein Shuffling to Stereo Microphone
Techniques", M A Gerzon, AES paper 3448). An interesting technique
which I think Gerzon implemented into Waves' S1 Shuffler.

Inverting the right channel and summing it up (to see whether it was
mono compoatible, the stereo improved indeed), I've found that there
are some short cancellations similar to short dropouts. So yes, it
might be a shuffling stereo experiment but gone bummer because of too
a strong stereo information. Just a guess. Where is our Scott, he
would certainly shed more light on this?

Edi Zubovic, Crikvenica, Croatia
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Don Pearce Don Pearce is offline
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Default Alan Blumlein on radio tonight

Adrian Tuddenham wrote:
Don Pearce wrote:

Adrian Tuddenham wrote:
Don Pearce wrote:

Edi Zubovic wrote:
On Sat, 02 Aug 2008 07:59:38 +0100, Don Pearce
wrote:

BBC Radio4's Archive Hour tonight at 8pm (UK) is all about Alan
Blumlein, and apparently has a load of his original recordings. Here's a
sample of a stereo test he did in the 1930s - I just grabbed it off the
trailer. There would have been more but Audition is really slow to fire
up when you want it in a hurry.

http://81.174.169.10/odds/blumlein.mp3

d
Thank you, I'd wish you had more of that. These are interesting stereo
recordings to investigate. Try to invert the right channel and sum up
into mono, you'll get some interesting cancellarions.

Edi Zubovicc, Crikvenica, Croatia
You know what? I get a much more stable set of images having inverted
one channel. I wonder if he got the polarity wrong all those years ago.
Or maybe something has happened to it since.

See the pictures of his cutterhead...

http://www.doramusic.com/Binaural%20...%20head%20side
%20view.JPG

http://www.doramusic.com/Binaural%20...%20head%20deta
il.JPG

....he got the polarity right, his recordings used lateral and vertical
modulation for the two channels. What has happened since is that the
BBC has incorrectly played the recordings in 45/45 stereo.


One of Blumlein's original recordings of the Abbey Road stereo tests was
available as a vinyl re-pressing on the 'Symposium' label (Nr: 1028A).
A vector analysis of it only shows strong modulation on one diagonal,
the other diagonal contains a very faint and distorted signal. Some of
Blumlein's tests were performed with spaced omni mics (HB1s?) and the
spacing was varied from zero to various widths, so it seems possible
that this is the test recording made with zero spacing - unfortunately
it was the only one re-issued (although metalwork for the others still
exists).

Not sure - assuming the 45/45 idea is what has happened, I've done the
necessary sum and difference edit to get vertical and horizontal. The
stereo effect disappears entirely, leaving just a rather shaky central
source. Inverting one channel gives a very clear sound stage with the
players distributed evenly across it. So I think they did do a
conversion from V/H, but got it wrong, ending up with one inverted channel.


I think you're right. I wonder where the mistake occurred and why it
wasn't spotted before transmission?



Maybe they just expected nothing better than they got, and failed to
pursue it. They would have had a pleasant surprise had they done so.

d


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Don Pearce Don Pearce is offline
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Default Alan Blumlein on radio tonight

Edi Zubovic wrote:
On Sun, 03 Aug 2008 19:39:41 +0100, Don Pearce
wrote:
-------------------8-----------------------------
You know what? I get a much more stable set of images having inverted
one channel. I wonder if he got the polarity wrong all those years ago.
Or maybe something has happened to it since.

See the pictures of his cutterhead...

http://www.doramusic.com/Binaural%20...%20head%20side
%20view.JPG

http://www.doramusic.com/Binaural%20...%20head%20deta
il.JPG

....he got the polarity right, his recordings used lateral and vertical
modulation for the two channels. What has happened since is that the
BBC has incorrectly played the recordings in 45/45 stereo.


One of Blumlein's original recordings of the Abbey Road stereo tests was
available as a vinyl re-pressing on the 'Symposium' label (Nr: 1028A).
A vector analysis of it only shows strong modulation on one diagonal,
the other diagonal contains a very faint and distorted signal. Some of
Blumlein's tests were performed with spaced omni mics (HB1s?) and the
spacing was varied from zero to various widths, so it seems possible
that this is the test recording made with zero spacing - unfortunately
it was the only one re-issued (although metalwork for the others still
exists).

Not sure - assuming the 45/45 idea is what has happened, I've done the
necessary sum and difference edit to get vertical and horizontal. The
stereo effect disappears entirely, leaving just a rather shaky central
source. Inverting one channel gives a very clear sound stage with the
players distributed evenly across it. So I think they did do a
conversion from V/H, but got it wrong, ending up with one inverted channel.



-- I just downloaded a Gerzon's article about Blumlein's shuffling
techniques ("Applications of Blumlein Shuffling to Stereo Microphone
Techniques", M A Gerzon, AES paper 3448). An interesting technique
which I think Gerzon implemented into Waves' S1 Shuffler.

Inverting the right channel and summing it up (to see whether it was
mono compoatible, the stereo improved indeed), I've found that there
are some short cancellations similar to short dropouts. So yes, it
might be a shuffling stereo experiment but gone bummer because of too
a strong stereo information. Just a guess. Where is our Scott, he
would certainly shed more light on this?

Edi Zubovic, Crikvenica, Croatia


I started this thread crossposted into r.a.tech. Shame someone cut that
out at some point.

d
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miniminim miniminim is offline
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Default Alan Blumlein on radio tonight

On Aug 2, 4:16 pm, "John B"
wrote:


Go hehttp://www.bbc.co.uk/radio4/archivehour/pip/i7o6j/

and click the listen again button. It's only up for seven days after
the broadcast date.

--
John B


when I follow this link I get a small window with a BBC "no clip"
message - is anyone else able to listen to this item?
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John Williamson John Williamson is offline
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Default Alan Blumlein on radio tonight

miniminim wrote:
On Aug 2, 4:16 pm, "John B"
wrote:

Go hehttp://www.bbc.co.uk/radio4/archivehour/pip/i7o6j/

and click the listen again button. It's only up for seven days after
the broadcast date.

--
John B


when I follow this link I get a small window with a BBC "no clip"
message - is anyone else able to listen to this item?


That'll be because you're in Canada, maybe?

Try through a British proxy, iPlayer is region locked according to your
IP address.

--
Tciao for Now!

John.
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[email protected][_2_] 20to20.keith@gmail.com[_2_] is offline
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Default Alan Blumlein on radio tonight

On Aug 5, 5:16*am, John Williamson
wrote:
miniminim wrote:
On Aug 2, 4:16 pm, "John B"
wrote:


Go hehttp://www.bbc.co.uk/radio4/archivehour/pip/i7o6j/


and click the listen again button. It's only up for seven days after
the broadcast date.


--
John B


when I follow this link I get a small window with a BBC "no clip"
message - is anyone else able to listen to this item?


That'll be because you're in Canada, maybe?

Try through a British proxy, iPlayer is region locked according to your
IP address.

--
Tciao for Now!

John.


I think the hour long broadcast was 1.2g,which is crazy, and no
steaming service was available.This is where our Australian
Broadcasting Corporation really shines...streaming on all audio and
video.
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Adrian Tuddenham Adrian Tuddenham is offline
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Default Alan Blumlein on radio tonight

Don Pearce wrote:

Adrian Tuddenham wrote:
Don Pearce wrote:

Adrian Tuddenham wrote:
Don Pearce wrote:

Edi Zubovic wrote:

[...]
You know what? I get a much more stable set of images having inverted
one channel. I wonder if he got the polarity wrong all those years ago.
Or maybe something has happened to it since.

See the pictures of his cutterhead...

http://www.doramusic.com/Binaural%20...%20head%20side
%20view.JPG

http://www.doramusic.com/Binaural%20...%20head%20deta
il.JPG

....he got the polarity right, his recordings used lateral and vertical
modulation for the two channels. What has happened since is that the
BBC has incorrectly played the recordings in 45/45 stereo.


One of Blumlein's original recordings of the Abbey Road stereo tests was
available as a vinyl re-pressing on the 'Symposium' label (Nr: 1028A).
A vector analysis of it only shows strong modulation on one diagonal,
the other diagonal contains a very faint and distorted signal. Some of
Blumlein's tests were performed with spaced omni mics (HB1s?) and the
spacing was varied from zero to various widths, so it seems possible
that this is the test recording made with zero spacing - unfortunately
it was the only one re-issued (although metalwork for the others still
exists).

Not sure - assuming the 45/45 idea is what has happened, I've done the
necessary sum and difference edit to get vertical and horizontal. The
stereo effect disappears entirely, leaving just a rather shaky central
source. Inverting one channel gives a very clear sound stage with the
players distributed evenly across it. So I think they did do a
conversion from V/H, but got it wrong, ending up with one inverted channel.


I think you're right. I wonder where the mistake occurred and why it
wasn't spotted before transmission?



Maybe they just expected nothing better than they got, and failed to
pursue it. They would have had a pleasant surprise had they done so.


I have written to the producer of the programme and pointed out the
error. If he replies, I will let you know what explanation he offers.


--
~ Adrian Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk


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Don Pearce Don Pearce is offline
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Default Alan Blumlein on radio tonight

Adrian Tuddenham wrote:


Maybe they just expected nothing better than they got, and failed to
pursue it. They would have had a pleasant surprise had they done so.


I have written to the producer of the programme and pointed out the
error. If he replies, I will let you know what explanation he offers.



Yes, please do. If it had been something peripheral it wouldn't have
mattered, but this stuff was kind of central to the theme.

d
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Adrian Tuddenham Adrian Tuddenham is offline
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Default Alan Blumlein on radio tonight

Don Pearce wrote:

Adrian Tuddenham wrote:


Maybe they just expected nothing better than they got, and failed to
pursue it. They would have had a pleasant surprise had they done so.


I have written to the producer of the programme and pointed out the
error. If he replies, I will let you know what explanation he offers.



Yes, please do. If it had been something peripheral it wouldn't have
mattered, but this stuff was kind of central to the theme.


The presenter of the programme, Martin Shankleman, has just telephoned
me to discuss the problem.

It seems that the transcription engineer for those sections was Roger
Beardsley, who supplied them on CD, ready to go straight into the
programme.

The producer is currently on holiday, so Martin Shankleman is unable to
check exactly what happened, but he can remember a discussion which
involved the poor results which the recording appeared to be giving in
mono. They had obviously suspected that something was amiss, but for
some reason did not correct it.

When the producer returns, we may get a better insight into what went
wrong.

--
~ Adrian Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk
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Don Pearce Don Pearce is offline
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Default Alan Blumlein on radio tonight

Adrian Tuddenham wrote:
Don Pearce wrote:

Adrian Tuddenham wrote:

Maybe they just expected nothing better than they got, and failed to
pursue it. They would have had a pleasant surprise had they done so.
I have written to the producer of the programme and pointed out the
error. If he replies, I will let you know what explanation he offers.


Yes, please do. If it had been something peripheral it wouldn't have
mattered, but this stuff was kind of central to the theme.


The presenter of the programme, Martin Shankleman, has just telephoned
me to discuss the problem.

It seems that the transcription engineer for those sections was Roger
Beardsley, who supplied them on CD, ready to go straight into the
programme.

The producer is currently on holiday, so Martin Shankleman is unable to
check exactly what happened, but he can remember a discussion which
involved the poor results which the recording appeared to be giving in
mono. They had obviously suspected that something was amiss, but for
some reason did not correct it.

When the producer returns, we may get a better insight into what went
wrong.


Oops, that really makes it worse. If they had simply not known something
was wrong, that is poor, but for something so simply identified and
corrected to have been evident to them, and they still failed to put it
right is pretty much unforgivable.

d
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Eeyore Eeyore is offline
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Default Alan Blumlein on radio tonight



Don Pearce wrote:

BBC Radio4's Archive Hour tonight at 8pm (UK) is all about Alan
Blumlein


And for a sec I thought he must have come back from the dead !

Bad luck with that H2S testing and low cloud for sure. You might have
thought they'd use the H2S to avoid the hills.

Graham

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