Frequently
Asked Questions
To
page 1
On December 17, 2001,
one of my international readers from Korea wrote,
Dear
Sirs,
How
do you do Sir?
Your
internet site is very informative for us.
I
appreciate of your informations.
Can
you give informations on Radioear Corp (i.e. internet
hompepage, fax number, e-mail, and in-charge person) if
you have ?
Looking
forward to hearing you soon.
This
information can be found here
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On December 10, 2001, one
reader wrote, "Michael, I have a question pertaining
to Audiometric Booths. In your article titled 'Room
Construction and Characteristics' mention was made that
common areas of problems in test booths include
ventilation fans. One possible solution is to shut the fan
down permanently however, this could introduce new
problems (ie carbon dioxide build up). Are you aware of
any studies done when the ventilation fan is shut down or
possible problems that maybe encountered? Are you aware of
an audiometric booth check sheet that one can use to
evalaute audiometric booth performance (ie door seals,
door fit, ventilation fan noise etc) and what specific
tests one can undertake to determine acceptable
performance? Thanks".
This question led to an interesting
discussion regarding the necessity of regular maintenance
on the Audiometric Booth. Click here
to read about what I suggested and how I helped this
particular reader.
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On January 30, 2001 one reader
suggested that I include a trouble shooting section on my
Web Page. I think this is a great idea and
will be building a section for trouble shooting in the
"Other Topics" menu in the table of
contents. Stay tuned for this section in the near
future. Due to the recent volume of questions and
requests, updates to the website will be fast and furious
but may not be completely finished for some
time.
In addition, the reader has
suggested that I include the price of a thorough
calibration procedure somewhere in my Web Site. Yet
another great idea, so stay tuned for this section in the
near future as well.
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On January 29, 2001 one
reader wrote:
Hey
Mike.
I
checked out your website.
It looks pretty good!
One thing I was looking for but I couldn't find on
there was what 'VU' on the VU meter stands for.
One
of my students in lab asked me that and I told her that I
think it
stood
for 'Voltage Meter'.
Can you confirm this?
That would be great to put on your website.
Also, you could explain what it's used for.
Thanks
Mike!
The
answer to this question is that the VU stands for VOLUME
UNIT. VU meters thus are used to measure the level
of sound intensity with audio equipment or in this case,
the audiometer.
Although
the measurements indicated on such a meter are in
decibels, the zero level should not be confused with 0 dB
HL, the threshold of hearing. On such meters, zero
indicates the maximum distortion-free level that can be
handled by the device with other values greater or less
than the zero level indicated as positive and negative
decibels relative to it respectively.
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On January 25, 2001 one reader
suggested that I include references categorized by topics
(i.e. audiometer topics, bone topics etc...) in addition
to an alphabetical ordering of first authors. This
suggestion has been noted and the changes will be made
within the next couple weeks. Thanks for the input!
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On
January 22, 2001 one reader wrote:
"Why
haven't you included more on HL references? I would
like to see more info on this"
The
answer to this question is now posted in the dB HL section
of the decimal scales and calibration article under
Audiometer Topics. Thanks for your input and keep
those questions coming.
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Some time ago, someone sent me an
email wondering how I was going to handle the chatroom
feature of my website. Well, due to the lack of
support and funding, I had to resort to public IRC.
I don't have a problem with this since nobody has really
complained about it.
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