Related Experiment Video
Updated: Feb 25, 2026
Multiplexing Focused Ultrasound Stimulation with Fluorescence Microscopy
Published on: January 7, 2019
The effect of transducer directivity on time reversal focusing
Brian E Anderson1, Miles Clemens1, Matthew L Willardson1
1Acoustics Research Group, Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA bea@byu.edu, theexperiment113@gmail.com, mwillardson@verizon.net.
Abstract:
This letter explores the effect of the directivity of a source on time reversal acoustic focusing of energy. A single loudspeaker produces an airborne focus of sound in a reverberation chamber and in a classroom. Individual foci are created at microphone positions that surround the loudspeaker. The primary axis of the loudspeaker is then rotated and experiments are repeated to average out the room response. Focal amplitude, temporal quality of the foci, and spatial focusing quality are compared to determine the optimal angle to aim a directional source axis relative to the desired focal position.
More Related Videos
08:08Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System
Published on: March 6, 2019
05:56Evaluation of the Feasibility, Safety, and Accuracy of an Intraoperative High-intensity Focused Ultrasound Device for Treating Liver Metastases
Published on: January 9, 2019
Related Concept Videos
01:24Properties of DTFT I
The linearity property of DTFTs is fundamental. If two discrete-time signals are multiplied by constants a and b respectively, and then combined to...
01:12Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...