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discussion / Acoustic Monitoring  / 31 May 2022

Replacement acoustic membranes for Audiomoth case 

Carly Batist

Carly Batist

Science Outreach Lead-Rainforest Connection (RFCx) & Arbimon
Ecoacoustics, biodiversity monitoring, primates, lemurs

Groups

Hi,

I am wondering if anyone knows where to get replacement acoustic films for the Audiomoth case (those little grey circle things - very scientific description, I know - that line up with where the mic is on the device). GroupGets is sold out last I checked. 

A lot of the membranes on my cases ripped this field season (16 out of 22) so I need to replace them. It seems like this is a fairly common problem people have, based on discussions in the Audiomoth support forums. I'd like to re-deploy but it's not clear when/where I can get replacements. And even so, I am currently in a remote area of Madagascar and I wouldn't be able to ship them in without someone I know actually couriering them in for me.

Therefore also curious if anyone has any DIY solutions they've tried, e.g., some kind of tape, plastic from a bag stretched over, etc.? I'd like to get these Audiomoths back out if there's a viable alternative to the actual acoustic membranes themselves. 

Thanks so much!   



Akiba
@Freaklabs
Freaklabs
I'm an engineer and product designer working on wildlife conservation technology.

31 May 2022 3:36pm

Hi Carly.

I'm not sure what material is used for the Audiomoth membranes. In our work, we use ePTFE (aka Gore-Tex) membranes which are gas and sound permeable, but water resistant. We haven't tried them for bioacoustics though. We mainly use them to measure outdoor CO2 levels. I think we could spare a couple samples if you wanted to test them out. I wouldn't know how to get them to you in Madagascar though. Here's a shot of them. 

Akiba