add CMSIS-DSP

README.md

@@ -227,7 +227,8 @@ Permanent URL to this list: https://github.com/iDoka/awesome-embedded-software
 * [kalman-clib](https://github.com/sunsided/kalman-clib) - Microcontroller targeted naive Kalman filter implementation in pure C.
 * [libdspl](https://sourceforge.net/p/libdspl-2-0/code/ci/master/tree/) - Cross-platform digital signal processing algorithm library, written in C language.
 * [pocketfft](https://github.com/mreineck/pocketfft) - Heavily modified implementation of FFTPack.
-* [KISS FFT](https://github.com/mborgerding/kissfft) - A mixed-radix Fast Fourier Transform based up on the principle, "Keep It Simple, Stupid".
+* [KISS FFT](https://github.com/mborgerding/kissfft) - Mixed-radix Fast Fourier Transform based up on the principle, "Keep It Simple, Stupid".
+* [CMSIS-DSP](https://github.com/ARM-software/CMSIS-DSP) - Embedded compute library for Cortex-M and Cortex-A.
 
 ### Compression