A correctly damped pressure-transducer system has a small ripple at the end of the square wave, which reveals the resonant frequency of the system. This ripple will damp down to zero after two or ...

The transducer is designed to work within a small band of frequencies — a 40kHz transducer will not work very well if you try to drive it at anything other than it’s resonant frequency.

Acoustic stimulation paired with ultrasound imaging reveals resonance properties of an artery. (A) Device placement to measure blood pressure in the carotid artery. (B) Illustration of device ...

Imagine a bulletproof iPod. It’s possible with new touch sensors that use resonant sound instead of capacitance. • Trapped acoustic resonance is most simply described with an analogy: the ...

A wearable blood pressure ... Raymond Jimenez and colleagues propose a method based on resonance sonomanometry, in which the artery is stimulated by an acoustic transducer and its resonant ...

[Lindsay] has a wonderful writeup about a new toy in the shop, an ultrasonic transducer. The 28kHz, 70W bolt-clamped Langevin transducer by itself is not much use, you need a power supply, a horn t… ...