Hi David--
re:
http://tinyurl.com/hhlb7
Good to see your curiosity got the better of you. I agree with your
observations with a quick ear analysis. I hear no differences that
are likely to give either mic a clear edge. Both, of course, are
noisier than what most would consider ideal for recording ambience.
We'll hang onto your comparison test and see if it correlates with
Eric's tests. As for file quality, how about if you upload the
Message: 44.
Subject: 1K/16 .wav file to Anton's resource?
To upload a sound file or photo:
http://ad2004.hku.nl/index.php
Username: nature
Password: sound
To see or right-click download files in the directory:
http://ad2004.hku.nl/naturesound
Use this only for uploading files for discussion on the nature
recordist list. Suggested 4mb max.
And post the link!
Rob D.
= = = =
At 7:02 PM +0800 7/3/06, Secomb's wrote:
>Hi all
>Hope this isn't too long winded.
>A while back there was a short discussion on Shure WL 183 v 93. Recently
>I tried testing 2 of each 183 and 93 using PIP ( plug in power). The
>mics were suspended about 1.5m high in the far room,between 5:00 and
>6:30 in the morning but this time of morning to cat likes to play. The
>tests were done using a Sony MZ- RH10 with PMC ( uncompressed format).
>Tracks down loaded to the PC by Sonic Stage. The only editing done was
>deleting unwanted sections and converted to MP3 for quicker downloading
>on the Internet. It was felt those with more experience and powerful
>programs can play as they wish. The best mic of each model was posted
>in the file section of the nature recordist page. The order of the
>samples is 183 first followed by the 93.
>
>There were 3 tests done.
>a); silent room
> The recorder was set at 30 ( the max. setting) and left for
>approximately 10 min.
>
>b); clock test
>the mic was place 2m from the clock. The recorder set at 30.
>
>c) Playback test
>Trying to get a fell how they may handle field conditions. To keep
>things constant for direct comparisons, 2 recent recent tracks of a
>Purple-caped Honeyeater and Shy Hylacola ( played in that order and
>found in the SW of Australia) were played through the computer speakers
>using a 2nd minidisk. Being unbalanced mics, stereo and the computer can
>give some funny noises in the recordings. The recorder was set at 20 (
>found mic noise is noticeable above this) and the volume of the speakers
>were set so the was a recording about 3 to 4 dB for the 183 and the same
>setting used for all mics. The results were disappointing and they were
>not included plus it would have made the file too large (1.05MB)
>
>
>d); voltage test
>a volt meter was used to see how much volts were going through to the
>mic when the recorder was set at recording mode.
>
>Results
>The difference between the 183's were about 3 to 3.5dB. This was
>pleasing as there was 6 or more dB difference before I found that one of
>the capsules wasn't screwed on properly. There was a greater range for
>the 93 with 1.6 dB for the loader recordings but 7 to 12dB for the soft
>recordings. I'm seriously thinking of retesting the two 93's.
>
>The impression I got was both of the better mics of both were very
>close, with the 183 being slightly more sensitive by 1 to 2 db and with
>less mic noise. I feel a retest of both 93's maybe needed to check the
>variability by loud and soft sounds. For tonal differences I will leave
>that to those with better ears.
>The readings from the volt meter was
>183 - 3.2 to 3.4v
>93- 0.4 to 0.6v
>Interesting to hear peoples thoughts on how that may have influenced the
>results.
>
>David
>
>Ps just listened to file that I just posted to file page and there are a
>lot of artificial sounds on it. How do we rectify this?
>
>
>--
>No virus found in this outgoing message.
>Checked by AVG Free Edition.
>Version: 7.1.394 / Virus Database: 268.9.8/380 - Release Date: 30/06/06
>
>
>
>
>"Microphones are not ears,
>Loudspeakers are not birds,
>A listening room is not nature."
>Klas Strandberg
>Yahoo! Groups Links
>
>
>
>
--
Rob Danielson
Peck School of the Arts
University of Wisconsin-Milwaukee
http://www.uwm.edu/~type/audio-art-tech-gallery/
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