Sound source . | Case 1 Half width of harp . | Case 2 Harp . | Case 3 Fore-wing . |
---|---|---|---|
Effective source radius (mm) | 1.1 | 2.2 | 4.0 |
Volume of equivalent sphere (m3) | 5.6×10-9 | 44.6×10-9 | 270×10-9 |
Mass of sphere of air (μg) | 6.7 | 54 | 320 |
Mass of sphere of heliox (μg) | 2.7 | 22 | 130 |
Effect of heliox versus air on resonant frequency(fo; Equation 3) | |||
If the resonator is harp | 1.01 | 1.06 | 1.24 |
If resonator is harp + file + anal area | 1.002 | 1.01 | 1.07 |
Sound source . | Case 1 Half width of harp . | Case 2 Harp . | Case 3 Fore-wing . |
---|---|---|---|
Effective source radius (mm) | 1.1 | 2.2 | 4.0 |
Volume of equivalent sphere (m3) | 5.6×10-9 | 44.6×10-9 | 270×10-9 |
Mass of sphere of air (μg) | 6.7 | 54 | 320 |
Mass of sphere of heliox (μg) | 2.7 | 22 | 130 |
Effect of heliox versus air on resonant frequency(fo; Equation 3) | |||
If the resonator is harp | 1.01 | 1.06 | 1.24 |
If resonator is harp + file + anal area | 1.002 | 1.01 | 1.07 |
The following densities are used for the gases: air, 1.2 kg m-3;heliox, 480 g m-3.
The mass of the harp is taken as 0.22 mg; the mass of the harp plus file plus anal area is taken as 1.2 mg (mean of left and right wing from Table 2).