Try using a stopwatch to time the execution of the programs in this chapter. Time from hitting return on the command until the next prompt appears. What is the relationship between execution time and the length of the sound? Is it a linear relationship (i.e., longer sounds take longer to process and shorter sounds take less time to process)? Or is it something else? Compare the individual programs. Does normalizing a sound take longer than raising (or lowering) the amplitude a constant amount? How much longer? Does it matter whether the sound is longer or shorter?