However, the metric correction phase was able to shift the timing of the following eighth notes so that they are in the correct position. The following image shows the results of metric correction. Each blue vertical line represents a beat. When the score is fully interpreted, the system can give us feedback about its interpretation in by coloring the score in various ways. For instance, the figure below shows all the notes coloured by their durations.
Eighth notes are green, quarter notes are blue, and dotted quarter notes are beige.
This MIDI file can then be played using any virtually any MIDI synthesis system. NoteAbility Pro . Acknowledgments Funding for this work was provided by the National Science Foundation, the Institute for Museum and Library Services, and the Levy Family.