One of the interesting experiments you can do at home with fast fourier transform algorithm (FFT) is figuring out level of water in your domestic water tank by analysing sound frequencies generated by the water going into the tank when filling. you can easily put some sort of microphone on your tap to hear that sound, considering the microphone is sensitive enough. and then by analysing sound spectrum, you can possibly tell a difference between full and empty tank as sound changes throughout the process of filling. just saying.🤔

@mohtashimnizamani I’ve been reading Sapiens every day to two kitties we are trying to domesticate. Oddly they stare at me like they are listening and understanding.