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ZEISS. Discover the fascinating world of birds, and win a birding trip to Columbia

Is a parabolic dish capable of listening or recording 12hz? (1 Viewer)

missbrown77

New member
Australia
Greetings All,

I have recently gotten into the amateur world of insect and bug recordings. I was wondering if a parabolic dish is capable of recording or listening to 12hz frequency? I wish to record insects but of the low frequency variety and I wish to be able to hear from a distance.

I was thinking about using the Sennheiser MKH 20-P48 RF Condenser Microphone - capable to do 12hz - 20hkz but with a custom dish.

The overall aim is to get a parabolic dish capable of the lowest possible frequency captive but can also hear from quite a distance as well.

Any information would be greatly appreciated.
 

opisska

Jan Ebr
Czech Republic
A 12 Hz sound wave has a wavelength of 25 meters. Even if your dish had two meters, it would still be only 1/10th of the wave and the sound is gonna mostly diffract around it, not reflect.

I don't know if there are any other tools to improve recording of low frequency sound, maybe there are, but a dish is clearly not one of them.
 

Vollmeise

Well-known member
Greetings All,

I have recently gotten into the amateur world of insect and bug recordings. I was wondering if a parabolic dish is capable of recording or listening to 12hz frequency? I wish to record insects but of the low frequency variety and I wish to be able to hear from a distance.

I was thinking about using the Sennheiser MKH 20-P48 RF Condenser Microphone - capable to do 12hz - 20hkz but with a custom dish.

The overall aim is to get a parabolic dish capable of the lowest possible frequency captive but can also hear from quite a distance as well.

Any information would be greatly appreciated.
missbrown, the Sennheiser MKH 20 does not need any dish to deliver its 12-20k frequency range, as the newer MKH 8020 (10 Hz - 60 kHz) doesn't.

Maybe You mixed it up with the Jecklin disc ("OSS technology"), whis is used to get natural stereo sound w/ a pair of MKH20s (or any other pair of omni mics), whicv are often used for that?

As Opisska mentioned, a parabol disc is not the right choice for getting LF sounds.

Just take one MKH 8020 and a capable field recorder and You'll be fine.

Cheers)
 
ZEISS. Discover the fascinating world of birds, and win a birding trip to Columbia
ZEISS. Discover the fascinating world of birds, and win a birding trip to Colombia
ZEISS. Discover the fascinating world of birds, and win a birding trip to Colombia

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