In our Fourier Series class, we designed out own project to play with Fast Fourier Transforms (FFT) to capture descriptive frequencies of an input signal in order to recognize that signal later. Due to patent sensitivity, I will not go in depth of the algorithm.
- I implemented the “spectrogram” recorder:
- Observed some fun results:
- Represented sound in low dimensional form:
- In order to eventually map input sound to original song’s database (Shazam algorithm):
More Intuition About FFT on Presentation Slides.