Cheng, "Extraordinary acoustic transmission
through ultrathin acoustic metamaterials by coiling up space," Applied Physics Letters, vol.
The acoustic transmission
rate and telemetry range are limited because of the poor BER.
 presented an analytical solution for acoustic transmission
through relatively thick FGM cylindrical shells using third order shear deformation theory.
Apple Firmness and Sensory Quality Using Contact Acoustic Transmission
. Proceedings of the eleventh international congress on Agricultural Engineering 3.
The reduction of acoustic transmission
was evaluated by the maximum amplitude ratio normalized by the maximum amplitude at room temperature using the silicone grease as couplant.
from 40 to 200 Hz were made between an acoustic source and a 600 m 32-element vertical line receive array, both deployed in the High Arctic from ice floes drifting with the pack ice.
For security of operation, a special coding system provides protection against accidental release by noise or acoustic transmissions
from other equipment.
The Joint Agency Coordination Centre said that the search with a mini sub of an area where acoustic transmissions
were detected in early April was now complete.
"Its acoustic transmissions
are very much lower in power than typical sonar signals, making it both environmentally friendly and enabling it to operate without causing harmful interference to other acoustic sensor systems," explained Trevor Barron, program technical director, Raytheon NCS.