The greater the difference between acoustic impedances, the larger the echo is.

The product of and from the above formula is known as the characteristic acoustic impedance.

The rayl, a unit of acoustic impedance, is named for him.

An explosion in air does not transfer much energy into a solid, due to acoustic impedance.

What is acoustic impedance and why is it important?

The acoustic impedance depends on both the characteristics of the wave and the transmission medium.

Acoustic impedance of the embouchure hole appears the most critical parameter.

This assumes that the acoustic impedance of the medium equals 400 Pa s/m.

The behaviour of sound waves encountering a different medium is dictated by their acoustic impedances.

If the acoustic impedance of the two media are very different most sound energy will be reflected (or absorbed), rather than transferred across the border.

Z is the acoustic impedance of material.

Acoustic impedance obtained from seismic inversion can also be considered an attribute and was among the first developed.

In addition, samples may be characterized without imaging to determine, e.g., their acoustic impedance.

Seismic surveys measure acoustic impedance contrasts between rock layers.

This acoustic impedance log is combined with the velocity data to generate a reflection coefficient series in time.

The acoustic impedance of piezoelectric materials facilitated their use as underwater transducers.

Moreover, to get the acoustic impedances to match as closely as possible, the mercury had to be kept at a constant temperature.

This information is then used to calculate the variation in acoustic impedance down the well bore using the Zoeppritz equations.

A horn is a tapered sound guide designed to provide an acoustic impedance match between a sound source and free air.

Image logs use a rotating transducer to measure acoustic impedance across the entire borehole wall.

The acoustic impedance mismatch between water and the bottom is generally much less than at the surface and is more complex.

Scanning acoustic microscopes use sound waves to measure variations in acoustic impedance.

This discontinuity is due to the differences between the acoustic impedances of the solid mantle and the molten outer core.

Technically, this effect stems from a discontinuity in the acoustic impedance of water created by the sudden change in density.

Acoustic impedance Z (or sound impedance) is frequency (f) dependent.