Digital Signal Processing Basics
Acoustic Signal I had a hard time understanding basics of digital signal processing. I think that the reason was the fact that sounds were not visible. There is a way to "see" the sound, though. This YouTube video for example demonstrates that special cameras make the sound visible. The sound is the virbation of particles in the air. Something invisible surrounding us rapidly moves back and forth. And our ears can hear this movement. I am writing this post to cover very basics of digital signal processing that I was very slow to understand. I will write concepts of Analogue-to-Digital conversion, sampling and Nyquist frequency. Analogue vs Digital Apart from the sound not usually visible to us, I think that I initially mixed up the concept of the digital signal with the analogue signal. I was still new to the idea that computers represent everything in discrete numbers. Two important things: An analogue s...