Flute acoustics: measurement, modelling and design - School of ...

6.3. RESULTS AND DISCUSSION 101
10 9 Frequency (Hz)
10 8
pre−treatment
after 5 weeks of treatment
1 week post−treatment
|Z| (Pa s m −3 )
10 7
10 6
10 5
10 4
0 500 1000 1500 2000 2500 3000 3500 4000
Figure 6.4: Impedance spectra for pipe 3 before, during and one week after treatment.
10 9 Frequency (Hz)
10 8
pre−treatment
after 5 weeks of treatment
1 week post−treatment
|Z| (Pa s m −3 )
10 7
10 6
10 5
10 4
0 500 1000 1500 2000 2500 3000 3500 4000
Figure 6.5: Impedance spectra for pipe 4 before, during and one week after treatment.