- Implement radix-2 Cooley-Tukey FFT algorithm
- Add windowing functions: Hann, Hamming, Blackman, Rectangular
- Support configurable frequency bin count
- Add peak detection with configurable decay rate
- Include temporal smoothing for visualization
- Add spectrum analysis example program
- Proper memory management with init/close lifecycle
Bug-fix: Add buffer bounds checking to prevent overflow when sample count is not power of 2
Signed-off-by: Srikanth Patchava <spatchava@meta.com>
