To solder the EM272 capsules, a tutorial is found here. I used the AOM-5024 model (you need to buy 20+ of them to avoid the high shipping costs). The most powerful ones are the EM272 (sensitivity -28 dB, sold on ), and even a bit more performant the Pui Audio AOM-5024 (sensitivity -24db, sold on ). These very small microphones (used in the Dodotronic dishes) are extremely powerful, and probably the best option for NocMig recordings (not per se for the quality of the recording, but especially for its reach). Here is another good dish (50 EUR with delivery costs). I bought the Audubon dish for 40 EUR (incl. A 40 cm dish is also easier to carry around. That is a good size (the Dodotronic dish is over 50 cm, but it doesn’t amplify necessarily much more, see section D). You find different “ squirrel baffles” on the internet, most of them are 40 cm in diameter. There are two versions, with a single pair of capsules and with a dual pair of capsules.įranck Hollander Parabolic mic with 2×1 capsules 1.
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Here below, you find some ideas on the material needed to build your own parabolic microphone (feel free to improve it). You need of course to be able to solder (or know someone who does it for you) the capsule microphones to a 3.5mm audio jack. But when I found out that a squirrel dish could be used to construct your own parabolic mic, I started as soon as I could. I was always a bit lazy to do so especially melting Plexiglas in the oven to shape your own parabolic dish was not my favourite idea. Inspired by the introduction of “La migration nocturne par le son” from Wroza & Rochefort (Delachaux et Niestlé 2021), I wanted to build myself a cheap parabolic microphone.
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