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When using a two-dimensional array of transducers, the time measurements can be used to detect a range of hand gestures in three dimensions within a distance of about a meter.
Since the demo included a linear array of transducers, rather than a two-dimensional array, I was only able to check out Chirp in two dimensions (meaning I could control the plane's side-to-side and forward-and-backward movements, but could not move it up and down).
In this paper, we study how to image both the location and the shape of extended targets using the response matrix obtained from inter-element response of an active array of transducers.
It is based on the time reversal (TR) where a signal collected from an array of transducers is time reversed and then back-propagated into the medium to obtain focusing on selected targets.
Results are presented of experimental measurements made with an array of transducers, both in the presence of a single near field and in a region where two significant near fields exist.
In this mode of ultrasound, a linear array of transducers simultaneously scans a plane through the body that can be viewed as a 2D image on screen [4].
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Array systems of transducers have found numerous applications in detection and localization of defects in structural health monitoring (SHM) of plate-like structures.
The box contains an array of ultrasonic transducers that steer and focus the beam toward the receiver.
An array of 16 transducers was used to measure the acoustic field in the wave tube.
An array of response transducers is installed on the structure, and then only a few locations are excited.
It uses an array of ultrasonic transducers to focus energy, in the form of high-frequency sound waves, at the receiver device embedded in the heart.
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