At 5:45 PM -0400 9/1/06, Walter Knapp wrote:
>
>Note that the center frequency of the cricket frogs is under 4kHz, which
>I'd not really consider high frequency. They are a challenge for mics
>and recorders to duplicate really well. And the mp3 encoder has it's own
>problems with them.
The cricket frog calls are similar to "jingling keys"-- a sound
often used for testing sibilance and high frequency transient
response. As one of the more telling tests of high end performance,
its impressive to see the 3032's hold their own.
<snip>
>This sort of recording is not a big challenge for the self noise of the
>mics, where I think you would find greater differences. The SASS housing
>does a lot of shaping of the sound, including a approximate 4dB gain to
>the mics. This farther buries the self noise and makes the sound more
>similar. Diaphragm size of the mics is also similar. So, it should not
>be too surprising that the two mics come out similar when mounted in the
>SASS. .
Interesting theory. Perhaps the reflected and direct waves being in
phase provides a similar advantage to both mics and lessens
differences.
>More usage under more diverse conditions would bring out
>differences. At least in a SASS the AT may be a acceptable substitute
>for the MKH for a much lower cost. At least if primarily call recording
>is contemplated, or louder ambiance sites.
Your comparisons are likely to encourage more experimentation with
3032's, but probably not with the advantages of the mkh-20 reference.
Eric measured 8dB(A) self noise on the 3032's so there's a decent
chance the similarities could persist in quiet locations.
>The high tripod has become a pretty established part of my system. It's
>not always practical to set up, but when it is I often use it,
>particularly with the SASS. The simplification of the soundpaths
>generally gives a clearer recording compared to doing it down at more
>normal ground levels.
Your rig's ability to get completely above the trees in some
instances is ingenious. Thanks also for the breakdown on the SASS
construction on your website! Rob D.
>Walt
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