CS 111 - Program Design

Exam 3 Topics

• arrays - the big new thing since the last exam
• still need the Java items from previous exams
  • while loops
  • for loops
  • if statements
  • method calls
  • method writing
  • return statements
  • arithmetic operators (including %)
  • relational operators
  • boolean operators
  • variables

• constructors using a filename and the number of samples
  • Sound s1 = new Sound(filename);
  • Sound s2 = new Sound (22050);
• getLength()
• getSamples()
• getSamplingRate()
• use of the SoundSample array
• SoundSample[] ssarr = s.getSamples();
  • val1 = ssarr[i].getValue();
  • ssarr[i].setValue(val1);
• volume control (mutliplying the SoundSample value)
• combining two sounds to play at same time (adding the SoundSample values)
• joining two sounds to play in order (position/index modification)
• fade-in - increasing volume over time
• fade-out - decreasing volume over time
• increase pitch - compressing the sound
• decrease pitch - expanding the sound