This is a simple interface to test and demonstrate the pitch extractor. All the code is written in pure Java. It extracts pitch and amplitude 10-15 times a second with minimal overhead, meaning you can run it real time and in a series of convolutions. All the tests ran on it have proven to be very accurate and reliable compared to a number of other extractors. The pitch extractor will work on any audio input stream, meaning you can read from a microphone input, line input, audio file or URL stream. Code for this may eventually find its way onto Sourceforge. If you're interested in further details or the code contact me.