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Teaching Innovation for the 21st Century | Showcasing UJ Teaching and Learning 2021
A
A3
Sound Intensity (dB)
Sound Intensity (dB)
B
A3
-120
2
C#6
-20
-40
-60
-80
-100
Violoncello A open strin
ARCO
PIZZIC
-20
-40
-60
-80
-100
-120
A4
E5
A5 C#6 E6
C#6
Violoncello "Bruno"
A open string harmonics
ARCO
PIZZICATO
G6
A6
2 34567891000 2 345678 Frequency (Hz)
Figure 2(a): Screenshot from one of the videos prepared for the activity showing Prof. Carleschi teaching harmonics and standing waves concepts using her cello. (b) Plot of the sound intensity versus frequency for the open A string of a cello for both arco (red) and pizzicato (blue) modes. The music notes corresponding to the fundamental harmonic and the first seven overtones are labelled accordingly.
