Sounds can be represented by an array of sample values that describe the intensity of the sound

Question:

Sounds can be represented by an array of “sample values” that describe the intensity of the sound at a point in time. The program ch06/sound/SoundEffect. java reads a sound file (in WAV format), calls a method process for processing the sample values, and saves the sound file. Your task is to implement the process method by introducing an echo. For each sound value, add the value from 0.2 seconds ago. Scale the result so that no value is larger than 32767.