Wireless Audio Recording... How Could It Be Done?

Other Hardware Science and Measurement
1

Hi there I have an IoT project, we want to put a bunch of modules in the forest and to record its "voice".

I was wondering how I could achieve it, which modules, and what are things I need to put more attention into.

In my mind it goes like this:

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I saw a video here: YouTube and inspired. I think I will base my setup from this video. However, from this video it is shown that the sound will be outputted to a speaker. I need to have the sound to be recorded as a .wav and recorded periodically per period of time, e.g. record everyday at 10:00 AM to 10:05 AM.

Are there any possibility to change the RF into GSM connection?

Any of you people here have experience on this matter?

3

Why? What is the problem if on site Arduino writes the sound directly to the SD memory card? You will probably also need an RTC module.

4

It isn't a problem at all if the Arduino writes MP3 directly in the attached SD card memory. I am exploring any possible solution.

But then, I need to somehow retrieve the audio files to a thing like AWS S3 or a like.

5

Very few Arduinos are fast enough, and have enough memory to do MP3 encoding.

6

This explains how to use an ESP32 to record sound to an sd card

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