Sentence examples for ultrasonic speaker from inspiring English sources

We designed an ultrasonic speaker with thickness mode piezoceramic transducers, and fabricated an ultrasonic speaker system working at a frequency of 650 kHz.

Standing on the spot prompts an ultrasonic speaker, dangling a few feet overhead, that uses directional sound technology.

The ultrasonic speaker developed in this study preserved all the unique features of an ultrasonic speaker without the use of complicated electronic signal processing circuits by virtue of the broadband frequency characteristics of thickness mode piezoelectric transducers.

Playback stimuli were delivered by Avisoft-SASLab Pro (Avisoft Bioacoustics, Version 4.4) from a PC laptop to the speaker (Avisoft Bioacoustics, Ultrasonic Speaker Magnat; freq.

We tested their sound reflection properties under controlled laboratory conditions by broadcasting (ScanSpeak Ultrasonic speaker, Avisoft Bioacoustics, Berlin, Germany) synthetic echolocation calls (30 130 kHz) at constant intensity at the fabrics at a 90° angle, thereby maximizing echo-intensity.

Acoustic stimuli were presented through an ultrasonic speaker (ScanSpeak, Avisoft Bioacoustics, Berlin, Germany) using an external sound card with a sampling rate of 192 kHz (Fire Wire Audio Capture FA-101, Edirol, London, UK) and a portable ultrasonic power amplifier with a frequency range of 1 125 kHz (Avisoft Bioacoustics).

In one such unit, three ultrasonic speakers placed at right angles to each other on the helmet send out ultrasonic chirps or pulses to microphones placed around the work area.

Until now, most ultrasonic speakers have utilized piezoelectric buzzer-like radial mode transducers, which necessitates a complicated signal processing circuit to overcome the narrow frequency bandwidth of the transducers.

Here, for the first time in a Fontana work, we see some of the infrastructure of the piece (usually all of the mechanics are hidden): four ultrasonic speakers.

"Ultrasonic" Klang Speaker Concept Only Produces Sound Where Your Head Is Today, A Ban On Headphones While Crossing The Street; Tomorrow, A Ban On Chewing Gum While Walking Are You Man Enough For This iPad Bjorn?

The interface was connected to an Ultrasonic Dynamic Speaker ScanSpeak.