The phrase "acoustical wave" is correct and usable in written English.
It can be used in contexts related to sound, physics, or engineering when discussing the propagation of sound waves through different mediums.
Example: "The study focused on the behavior of acoustical waves in various environments, highlighting their impact on sound quality."
Alternatives: "sound wave" or "acoustic wave".
Anyway, instead of using a speaker this guy's using magnets, and instead of using an acoustical wave he's using something called a planar wave.
Electronic music is produced from a wide variety of sound resources from sounds picked up by microphones to those produced by electronic oscillators (generating basic acoustical wave forms such as sine waves, square waves, and sawtooth waves), complex computer installations, and microprocessors that are recorded on tape and then edited into a permanent form.
This paper applies the acoustical wave propagator technique to wave packet propagation in a one-dimensional stepped beam.
In general each one-dimensional plane wave is the sum of a random shear layer and a random acoustical wave.
This paper presents the acoustical wave propagator technique to describe the flexural wave propagation and scattering in an elastic plate with multiple cylindrical patches.
A scheme combining Chebyshev polynomial expansion and fast Fourier transformation is introduced to implement the operation of the acoustical wave propagator.
(20)–(21) allows (in general case) to determine the speeds of acoustical waves propagating in the media with closed fractures at arbitrary direction with respect to external stresses.
Recently, it was performed using both acoustical waves and array processing algorithms in order to improve depth range and spatial resolution.
Theoretical estimations and computer modeling revealed that the position of the downhole ultrasonic tool near the sidewall of the well leads to more homogeneous distribution of the induced acoustical field and wider penetration of the acoustical waves.
Interactions of acoustical waves with obstacles, on the path from the source to the observation point, are reduced to specular reflections from surfaces and diffraction at edges (wedges) of obstacles.
Moreover, a closed-form partial-wave series expansion is obtained for the incident field, which has the property that the axial scattering (i.e. along the direction of wave propagation) and the axial acoustic radiation force (which is a time-averaged quantity) on a cylinder, can be calculated without any approximations in the limit of linear acoustical waves in a nonviscous fluid.
