I have only limited knowledge so far about Arduino and electronics, but I am not afraid making Experiments
I would like to measure the intensity of infra sound within the range from ~ 1 Hz to 20 Hz.
I haven‘t found any working application so far. Hints are welcome
Has any body any idea, which kind of sensor I should use?
I am thinking about using something like a low pressure sensor e.g. BME280 or a blood pressure sensor like the MPS20N0040D.
The whole system should be able to measure the intensity of sound at a certain given frequency.
But can I measure selectively at all with such kind of sensor or this not possible?
And I want to scan the range from 1-20 Hz and see the amplitude over frequency.
My fear is, that there is probably not only a single frequency in the air, but a kind of subsonic „pink noise“.
In the first step it is not necessary to calibrate it, since I just want to find out, whether there is a Maximum, respectively what there is at all around ...
Thanks for any assistance!