title: How to work with audio files?
body: <p>A digital image consists of multiple pixels, each of them has some values which indicate the intensity of the corresponding colors. If I want to work with images I can simply read or change pixels. For scientific purposes there is for example the <a href="https://en.wikipedia.org/wiki/Netpbm_format" rel="nofollow noreferrer">PPM-Format</a>, which encodes each pixel one by one in readable ASCII format.</p>
  
  <p>Is there a similar way to read or modify audio files? How is audio edited? What are the building blocks, the smallest parts, the “pixels” of audio recordings? Is there an ASCII sound file format?</p>