8.5 Simple input

Base input

We developed the music transcription system by analyzing a simple input of a “C5” followed by an “E5.” The letter corresponds to the musical note, and the number corresponds to the octave (a “C4” is lower than a “C5” and so forth; a “C4” is “Middle C”). The input is comprised purely of tonal components, and no chords are used

Traditional spectrogram

Fig 1 The traditional “smeared” spectrogram of the base input

Reassigned spectrogram

Fig 2 The higher-resolution “Reassigned” spectrogram of the same input

System output

Ultimately, our system correctly identified the two notes being played as a “C5” followed by and “E5.” The output format from MATLAB is shown below:

Fig 3 MATLAB prints out the correct result