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Posts Tagged ‘Hummock’

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I recently noticed the best tripod I can get to avoid high levels of „mechanical wind noise“ in recordings. It is simply a hummock. I have many times recorded nature sound by leaving omni mics on the ground. But it has not been as simple for cardioid mics because it changes the EQ on the frequency range, especially when the mics are in the windshield.
Here below is a recording I did in Flói bird reserve in south Iceland. The average wind was probably around 4-5m/sec with some gust up to 5-7m/sec. The high pass filter was at 40Hz so mechanical wind noise should be with a typical tripod clearly audible at 3m/sec.
Keep in mind this is a recording of silence. It was barely nothing audible while this was recorded
It was recorded with 48dB gain and in post the gain was increased again about 27dB.
Most of the background noise is the surf on the south coast which is very noisy. The wind is almost constantly wiping the ground and airplanes make a rumble noise for many minutes. You will also hear wind noise but far less than it would have been with a typical tripod. 
One of the reasons I think it is so effective to put the rig on the ground, is mainly because the LCT540s is a heavy mic. So while the windshield lay so heavily on the ground, the ground works like a damper for all vibration on the windshield which therefore make less „mechanical wind noise“
Most bird species are in distance so this is not a very attractive recording. But many things are going on in this wide open space in south Iceland and it is always interesting to listen to soundscape which is too quiet for most human ear.
Quality open headphones are recommended while listening at low to mid level, or in speakers at low level.

(mp3 256kbps / 60Mb)
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Recorder: Sound devices MixPre6
Mics: Lewitt LCT540s IRTcross setup
Pix: Canon EOS R
Location: 63.901024, -21.192173
Weather: cloudy, calm up to 7m/sec, around 12°C

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