Data Processing
Tone decoding library based on the Goertzel algorithm
The Goertzel algorithm is a fast and resource-efficient way of evaluating just a small portion of a discrete Fourier transform (DFT). This library implements this algorithm for (multi-)tone decoding (DTMF, FSK, etc.).
Maintainer: Sebastian Westerhold (AI5GW)
This library is compatible with all architectures so you should be able to use it on all the Arduino boards.
To use this library, open the Library Manager in the Arduino IDE and install it from there.