Araw digital sound file samples a sound wave at some interval and measures the height of the wave at each point. thus, raw sound is recorded as a list of numbers.
in very broad terms the mp3 audio compression algorithm identifies frequencies and volume levels - low and high - that are outside the range of human hearing and removes the data representing these frequencies from the original. this technique results in a smaller audio file that sounds exactly the same to the human ear.
this technique is an example of what type of compression?
a. lossy compression
b. lossless compression
c. fast fourier transform compression
d. tailored compression