Classical Guitar - Sound Waves....

For the technically minded amongst you I thought you may be interested in actually seeing the sound waves from a recording of Robin playing the classical guitar.
This photograph shows the first three notes of a well known guitar piece.
Can you tell which?



No, well, it is tricky I must admit.
I'll tell you.
It's 'Un Dia de Noviembre', by Leo Brouwer.

The second photograph, actually shows two of the same notes, later on in the piece.
As you can see, the shape of the notes are very different, with the oscillation of the second note clearly visible, as Robin plays vibrato.
The notes look longer because Robin is playing tenuto, as he adds his own interpretation to the music.




The final picture shows the end of the last note, as it fades out, with a much smaller sound wave to finish off, which is a harmonic, E. You can see that this is a very different shape to all the other notes.




It's amazing what you can find to do on a wet Saturday afternoon!