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Dave Plowman (News) Dave Plowman (News) is offline
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Default Anyone here know about CD test tone discs?

In article ,
Scott Dorsey wrote:
The television world is the _opposite_ of the pro audio world, nobody
actually cares about the audio for television. The way television
people deal with levels is to use AGC devices at every stage in the
chain instead of actually setting reference levels. This means that by
the time it gets from the main studio through the syndicator and the
network, the local affiliate and the cable headend, you can hear at
least a dozen pumping away at the same time.


I take back what I posted later. Here is a pic from a UK local TV station.

http://i139.photobucket.com/albums/q...ps6f909b22.png

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Scott Dorsey Scott Dorsey is offline
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Default Anyone here know about CD test tone discs?

Dave Plowman (News) wrote:
In article ,
Scott Dorsey wrote:
The television world is the _opposite_ of the pro audio world, nobody
actually cares about the audio for television. The way television
people deal with levels is to use AGC devices at every stage in the
chain instead of actually setting reference levels. This means that by
the time it gets from the main studio through the syndicator and the
network, the local affiliate and the cable headend, you can hear at
least a dozen pumping away at the same time.


I take back what I posted later. Here is a pic from a UK local TV station.

http://i139.photobucket.com/albums/q...ps6f909b22.png


This picture is obviously dated. There's an actual _operator_ at master
control illustrated.
--scott


--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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Trevor Trevor is offline
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Default Anyone here know about CD test tone discs?


"Dave Plowman (News)" wrote in message
...
What I was taking issue with was that although you may get a perfectly
correct line up from a 'pro' facility, what's on the file may not bear
that much relationship to it. ;-) Like quite severe clipping. I'm sure
you'd not let anything like that leave you, but I've seen it so often to
know plenty do.


Well all recent pop CD's have severe clipping too, but it's quite deliberate
unfortunately.

Trevor.


  #124   Report Post  
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Dave Plowman (News) Dave Plowman (News) is offline
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Default Anyone here know about CD test tone discs?

In article ,
Scott Dorsey wrote:
I take back what I posted later. Here is a pic from a UK local TV
station.

http://i139.photobucket.com/albums/q...ps6f909b22.png

This picture is obviously dated. There's an actual _operator_ at master
control illustrated.


Will be an internship or work experience. ;-)

--
*I like cats, too. Let's exchange recipes.

Dave Plowman London SW
To e-mail, change noise into sound.
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Dave Plowman (News) Dave Plowman (News) is offline
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Default Anyone here know about CD test tone discs?

In article ,
Trevor wrote:

"Dave Plowman (News)" wrote in message
...
What I was taking issue with was that although you may get a perfectly
correct line up from a 'pro' facility, what's on the file may not bear
that much relationship to it. ;-) Like quite severe clipping. I'm sure
you'd not let anything like that leave you, but I've seen it so often
to know plenty do.


Well all recent pop CD's have severe clipping too, but it's quite
deliberate unfortunately.


Quite.

--
*Black holes are where God divided by zero *

Dave Plowman London SW
To e-mail, change noise into sound.


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Gary Eickmeier Gary Eickmeier is offline
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Default Anyone here know about CD test tone discs?

Thanks for the suggestion on the test disc. I bought one and it has some
useful stuff on it - especially the music tracks. Some good imaging tests.

Gary Eickmeier


wrote in message
...
Bob:

Cut through the sturm un drang in this thread and get THIS DISC:
http://www.amazon.com/gp/aw/d/B00000...&robot_redir=1

I keep mine in a safe, along with the deed and my VOMeter.


Track #8 is one minute of full-scale 1kHz sine.

Get a reading of .3-.5V and you should be rockin'!

More info:
http://forums.stevehoffman.tv/thread...oo-hot.350381/



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Trevor Trevor is offline
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Default Anyone here know about CD test tone discs?


"Gary Eickmeier" wrote in message
...
wrote in message
...
Bob:
Cut through the sturm un drang in this thread and get THIS DISC:
http://www.amazon.com/gp/aw/d/B00000...&robot_redir=1
I keep mine in a safe, along with the deed and my VOMeter.
Track #8 is one minute of full-scale 1kHz sine.
Get a reading of .3-.5V and you should be rockin'!
More info:
http://forums.stevehoffman.tv/thread...oo-hot.350381/


Thanks for the suggestion on the test disc. I bought one and it has some
useful stuff on it - especially the music tracks. Some good imaging tests.


I did buy one 30 years ago, (not to mention test records and tapes 40+ years
ago) but for the last 20 years I've simply made my own test CD's, or *far*
more often simply used a computer output to generate the test signals
directly. Far easier to both generate and measure at the same time that way.
Unless you are actually measuring a CD player of course, but I rarely use
one of those these days either, when it's far easier to use a computer or
media player to play tracks.
(Next thing someone will tell us how to *buy* a digital test file for iPods!
:-) :-)

Trevor.


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John Williamson John Williamson is offline
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Default Anyone here know about CD test tone discs?

On 12/08/2014 08:29, Trevor wrote:
(Next thing someone will tell us how to *buy* a digital test file for iPods!
:-) :-)

Grin Send me money and I'll send you whatever test files you want in
whatever format you wish. ;-)


--
Tciao for Now!

John.
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[email protected] thekmanrocks@gmail.com is offline
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Posts: 1,742
Default Anyone here know about CD test tone discs?


"Gary Eickmeier" wrote in message
...
wrote in message
...
Bob:
Cut through the sturm un drang in this thread and get THIS DISC:
http://www.amazon.com/gp/aw/d/B00000...&robot_redir=1
I keep mine in a safe, along with the deed and my VOMeter.
Track #8 is one minute of full-scale 1kHz sine.
Get a reading of .3-.5V and you should be rockin'!
More info:
http://forums.stevehoffman.tv/thread...oo-hot.350381/


Thanks for the suggestion on the test disc. I bought one and it has some
useful stuff on it - especially the music tracks. Some good imaging tests.


I did buy one 30 years ago, (not to mention test records and tapes 40+ years
ago) but for the last 20 years I've simply made my own test CD's, or *far*
more often simply used a computer output to generate the test signals
directly. Far easier to both generate and measure at the same time that way.
Unless you are actually measuring a CD player of course, but I rarely use
one of those these days either, when it's far easier to use a computer or
media player to play tracks.
(Next thing someone will tell us how to *buy* a digital test file for iPods!
:-) :-)

Trevor.

_____

Nothing wrong with testing, being curious Trev. Ensuring my playback chain is well-matched? Priceless!

Testing, probing, measuring... It's just what "pro"s do.
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