DSP and Math lib

[agaelema 39]

Hi,

I'm working in this library with some useful DSP and math functions (ideally focusing on embedded systems). Currently it's in the initial version with few functions, but I hope to add more in the next update.

I prefered to use some structs to save parameters and use just one function to various instances of filters (very versatile).

Functions
- High Pass Filter (Single pole): Float, fixed and fixed extended version (with more bits to fractional part)
- Low Pass Filter (Single Pole): Float, fixed, fixed extended and fixed fast (with some limitations related to cuttof frequency, but more efficienty.
- RMS value: calculate RMS value of an array or sample by sample. Currently using square root function of math.h, but in the next update I will add a optimized version.

I hope this can be useful. Feel free to test, share and contribute with this project.

Github: https://github.com/agaelema/DSP_and_Math

[agaelema 39]

Hi everyone,
I updated the library adding some functions:
- to easily generate sine waves in a array and iteratively
- goertzel dft using array data or sample by sample (very interesting because not need an array)

Enjoy it

Github: https://github.com/agaelema/DSP_and_Math