audio - Increase playback speed of sound file in java

Question

I'm looking for information on how I can increase the playback speed of a sound file using Java and it's sound API.

I'm currently using a clip and an AudioInputStream to play back the file, but I'll be glad to change that if it means I can increase the playback speed.

Answer 1

I do this by using linear interpolation. As you step through your samples by some increment, use the fractional distance to create a value to stream.

For example if you land at 1.25 (between a sample with value 10 and sample of value 30), you would output a value of 15.