| Greetings!
We
start 2009 with new products, new services and new
sequences! Read on to learn how AmpConnect simplifies
loudspeaker and microphone testing, to learn about
Listen's consultancy services and to hear more about a
new splice sequence for ported loudspeakers. We also
bring you Q&A and quick tips - features to help you
get more out of your SoundCheck system.
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New AmpConnect Simplifies
Test
 The new AmpConnect
(available in the second quarter of this year) makes
loudspeaker and microphone testing simpler AND more
cost-effective. It replaces an impedance box, amplifier,
microphone power supply and digital I/O card with one
simple USB controlled piece of hardware. AmpConnect
provides all the necessary calibration, voltage, &
current signals to perform acoustic and electronic tests
such as frequency response, sensitivity,
distortion, and impedance. It can also drive sound
sources (e.g. mouth simulators) for testing microphones.
AmpConnect reduces operator error as multiple hardware
items are replaced by a single rugged, rack
mountable unit with fully labeled connections.
No additional external equipment is required to
realize a complete acoustic test platform for a wide
range of devices - simply connect your device to
AmpConnect and SoundCheck, and start testing. More |
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See us at at ALMA Europe, April
4
Listen
President Steve Temme will be presenting a paper on Time
Frequency analysis at ALMA Europe, April 4 in Frankfurt.
ALMA's first European event, in conjunction with
Prolight and Sound, features a day of technical papers
about various aspects of loudspeaker design. Temme's
paper will discuss 4 different time frequency analysis
algorithms and their application to loudspeaker
analysis.
More
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New Splice Sequence for Ported
Speakers
We bring you
a new loudspeaker splice sequence which can accommodate
ported as well as sealed loudspeakers and is updated for
SoundCheck version 8. This sequence measures the
anechoic response of a loudspeaker in an ordinary room
using both a near field (woofer and ports) and
time-windowed, far field measurement "spliced" together
to cover the full bandwidth of the loudspeaker's
response from 20 to 40 kHz.
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Training: Tell
us what you want!
Due to the economic climate, it seems that few of
our customers are likely to get travel budgets approved
for scheduled training out of state this year. While we
believe that in-person training classes are the best way
to quickly learn how to use SoundCheck and improve your
testing skills, we recognize the need to do something
different in these tough economic times. In order that
we can plan a training event that meets your needs,
please click on the link below and fill out our short
training survey (it won't take more than a minute or two
to complete).This will help us plan an event that meets
your requirements at a budget you can afford. All
respondents will be entered into a draw for a day of
FREE SoundCheck training. Take
survey |
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Consultancy
Services
 Did you know that
Listen offers test and measurement consultancy services?
Using our own in-house test and measurement experts, and
where appropriate other approved consultants, we offer
sequence writing, modification and specialized acoustic
test training. We can also test a wide range of products
including loudspeakers, microphones, headphones,
telephones, hearing aids and audio electronic devices in
our well-equipped test laboratory. Please call or email
us to discuss your needs.
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Q&A
Customer Support Engineer Amandio Neves answers your
SoundCheck Questions.
Q: I am running SoundCheck on a
loudspeaker production line, and one of the engineers that I
work with frequently stops by to do additional tests to
analyze failed speakers. I have to interrupt my production run
to allow him to use the system, then, when he is finished,
return to my own sequences and start again. Due to this
interruption, the statistics for my batch are ruined! Is there
any solution to this problem?
A: You
could of course suggest that he buys his own system! However,
there is a simpler (and more cost-effective) solution.
SoundCheck has a Pause button. It's at the top of the screen
just below the Windows menus (to the left of the lot # box).
Hitting the pause button will hold everything that you are
doing so that the engineer can run his tests, even if it is a
different sequence, and when he is done you can hit the pause
button again to return to your sequence and resume testing
your batch. This will bring you back to exactly where you left
off and hold all statistical data.
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Quick Tip
To avoid cluttered
spreadsheets when autosaving appended test data to Excel as
part of a sequence, you can eliminate redundant exports of the
x-axis data. Open the autosave editor and ensure that just the
y axis is selected. It will now export the x-axis data only
once during the first
autosave.
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