Acoustic isolators

摘要

Acoustic isolators are disclosed herein. An example apparatus includes a transmitter to transmit an acoustic signal. The example apparatus also includes an acoustic isolator substantially surrounding a receiver, and the receiver is to receive the acoustic signal via an opening in the acoustic isolator. The transmitter and the acoustic isolator are coupled to a base. The acoustic isolator includes a first layer coupled to a second layer defining a plurality of spaces. The second layer is to provide an acoustic impedance mismatch.

主权项

1. An apparatus, comprising:
a transmitter to transmit an acoustic signal; an acoustic isolator surrounding a receiver with one or more sidewalls and a bottom wall, the acoustic isolator having a first layer coupled to a second layer defining a plurality of spaces, the second layer to provide an acoustic impedance mismatch, wherein the receiver is to receive the acoustic signal via an opening defined by the one or more sidewalls and the bottom wall in the acoustic isolator; and a base, wherein the acoustic isolator and the transmitter are coupled to the same side of the base, and wherein the acoustic isolator uses the bottom wall to isolate the receiver from the acoustic signal propagated along the base.