In the bass register, a second factor affecting the inharmonicity is the resonance caused by the acoustic impedance of the piano sounding board.
22.
"f " f is the frequency of the fundamental . " Z " q is the acoustic impedance of material.
23.
Biophysicists have implicated acoustic impedance, or the ratio of acoustic pressure to particle velocity, as a factor contributing to blast damage in vivo.
24.
Seismic waves are mechanical perturbations that travel in the Earth at a speed governed by the acoustic impedance of the medium in which they are travelling.
25.
This occlusion effect occurs with seashells, cups, or hands held over one's ears, and also with acoustic impedance to external sounds.
26.
The most well-known type is a B-mode image, which displays the acoustic impedance of a two-dimensional cross-section of tissue.
27.
When the compression waves reach areas of high acoustic impedance mismatch ( such as the opposite side of the target ), tension waves reflect back and create spalling.
28.
When a seismic wave travelling through the Earth encounters an interface between two materials with different acoustic impedances, some of the wave energy will refract through the interface.
29.
Note that the properties of a film as determined with the QCM are fully specified by two parameters, which are its acoustic impedance, " Z"
30.
Wave transitions between tissues with significantly different acoustic impedances, particularly between the external environment and bone, causes focal mechanical damage as a result of wave energy dissipation.
