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Frequency reponse

I have found some information about the highend frequency but have not found anything clear about the range. Can audiomoth record from 20hz to 20Khz?

Can I conect an external electret microphone? Has audiomoth plugin power capabilities?

And, when it will be again avaible?

Thaks

Xoán

5 comments

5 Comments

Rafael Barboza

Dec 29, 2021

Hi Xoan,

Did you get to making recordings in your research between 20Hz to 20kHz?? I also need to record between this rate. What settings did you use?

Alex Rogers

Jan 06, 2022

Replying to

Hi Rafael, If you use the 48kHz sample rate you will be able to record frequencies up to 20kHz. By default AudioMoth has a DC blocking filter with a cut-off frequency of 48Hz. This limits the low frequency response somewhat. From version 1.6.0 of the firmware you can disable this filter in the 'Advanced' pane, and this increases the low frequency sensitivity. This option was included for researchers who are using AudioMoth to record elephant infrasound that goes down to 10Hz. Alex

Xoán-Xil López

Jan 20, 2018

Thanks Andy,

About plugin power, it is similar to phantom but lower voltage. It provides around 5 volt and it is used by electret capsuled.

Anyway, I am looking forward to get some units to try.

Andy

Jan 19, 2018

Hi Xoan,

AudioMoth can record between 20Hz to 20kHz and also all the way to 192kHz. Unfortunately, you cannot connect an external microphone to AudioMoth. What do you mean by plugin power capabilities?

We hope for the next group purchase to be available in approximately three months. We will send out an email to all subscribers when the next round opens.

Thanks,

Andy