Users can sing, whistle or play a few notes on a musical instrument into their PC's microphone.
The key to the software is its ability to digitise your ditty and then extract a sequence of pitch and timing data that can be usefully compared with actual musical pieces. The idea is that after you've entered your tune, the search engine scours a database of tunes, looking for matching pitch and timing information. Timing is a non-precise parameter. Even a pianist cannot play a piece the same way twice. Our algorithm has been designed to accommodate this fuzziness.