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<p>Thank you, Jay. I may have an original VU paper filed somewhere.
But the list was so quiet I thought I would wake it up. :-)</p>
<p><br>
</p>
<p>Best wishes,</p>
<p><br>
</p>
<p><br>
</p>
<p>Bob</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 1/28/21 10:15 PM, Jay at MRL Support
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1598380530.20210128191514@comcast.net">
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charset=ISO-8859-15">
<title>Re: [ProAudio] VU meter permitted overdrive with a sine
wave...</title>
<span style=" font-family:'Times New Roman'; font-size: 12pt;">Hello
Bob,<br>
<br>
It appears that no-one has ever read any of the once-published
standards on the vu meter. <br>
<br>
<span style=" font-size: 11pt;">"15 Overload input level <span
style=" font-size: 18pt;">- <span style=" font-size: 11pt;">Performance
requirement<br>
"The indicator shall withstand, without damage or any
effect on calibration,<br>
an overload of ten times the voltage giving reference
indication for a time<br>
interval of 5 s and an overload of three times that
voltage for unlimited<br>
period of time. "<br>
<br>
That would be +20 dB and +10 dB, respectively<br>
<br>
<span style=" font-size: 12pt;">This same text is in the
original Chinn IRE ~1940 paper ( </span></span></span></span></span><a
style=" font-family:'times new roman'; font-size: 12pt;"
href="https://www.aes.org/aeshc/pdf/chinn_a-new-svi.pdf"
moz-do-not-send="true">https://www.aes.org/aeshc/pdf/chinn_a-new-svi.pdf</a><span
style=" font-family:'Times New Roman'; font-size: 12pt;"> ),
the IRE Standard, the IEEE Standard, the ANSI Standard, or the
current Standard, IEC 268-17.<br>
<br>
On Thursday, January 28, 2021 at 9:26, you (Bob Katz via
ProAudio) wrote:<br>
<br>
</span>
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<td width="1190"><span style=" font-family:'Times New
Roman'; font-size: 12pt;">This list has been remarkably
silent, but I am very grateful that it's around when I
have a question to ask AUDIO EXPERTS.<br>
<br>
Who here knows the acceptable rating of a standard
mechanical VU meter above 0 VU with a sine wave? If I
recall correctly, they are designed to accept as high as
+6 VU or even higher. For example, when doing testing of
a tape recorder for headroom. It's still ideal to shut
off the meter, but in some cases that's not possible.<br>
<br>
<br>
Thanks and happy New Year!<br>
<br>
<br>
Bob<br>
-- </span></td>
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<br>
<br>
<span style=" font-family:'calibri'; font-size: 9pt; color:
#c0c0c0;"><i>-- <br>
Best regards,<br>
Jay McKnight <br>
at<br>
Magnetic Reference Laboratory, Inc </i></span><a style="
font-family:'calibri'; font-size: 9pt;"
href="mailto:mrltapes@comcast.net" moz-do-not-send="true">mailto:mrltapes@comcast.net</a><br>
<br>
<span style=" font-family:'calibri'; font-size: 9pt; color:
#c0c0c0;"><i>Technical Information only: Sales
information and orders:<br>
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Cupertino, CA 95014 US San Jose, CA 95123 US<br>
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Tel +1 408 252 7396 Tel & FAX: +1 408
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See our website for technical and ordering information:<br>
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href="http://www.mrltapes.com" moz-do-not-send="true">http://www.mrltapes.com</a>
</blockquote>
<div class="moz-signature">-- <br>
<pre><font class="3D""" face="3D"Courier"">
If you want good sound on your album, come to
Bob Katz 407-831-0233 DIGITAL DOMAIN MASTERING STUDIO
Author: <b>Mastering Audio</b>
<a href="https://www.digido.com/">Digital Domain Website</a>
No trees were killed in the sending of this message. However a large number
of electrons were terribly inconvenienced.</font>
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