Record FFT data

[funfrancis]

Hi

I am using hydrophones (underwater microphone) and Pre-amp with the Raspi1

I intend to get FFT data from the hydrophones.
I do want need the FFT data to be displayed as sine curves, or on LED Strip but numbers

The Teensy 3.1 has libraries and examples for FFT data (based on arduino)
https://www.pjrc.com/teensy/td_libs_Aud ... zeFFT.html

The output on the Teensy is as such

Code: Select all

https://www.dropbox.com/s/3sat3e7xk8syx0j/Recording%20Ended_Error.png?dl=0

The rise in frequency is displayed by numbers....

[PeterO]

Your question is ?

PeterO.

[funfrancis]

I need to get FFT data in Raspi 1
For sound recording I have Wolfson audio card...https://www.element14.com/community/com ... wolfson_pi

The teensy part was fro reference