Based on this metasurface, we designed some ultrathin acoustic planar devices, such as planar acoustic axicon, acoustic lens
, and acoustic nondiffracting Airy beam generator.
The acoustic lens
is used to focus the ultrasound beam at the target distance and usually protects the matching layer because a medical ultrasound transducer without an acoustic lens
could directly contact the target [15, 16].
The passive wave modulator is a type of acoustic lens
that can alter the transmitted or reflected waves.
Bang and Olufsen also pioneered in a new technology called the acoustic lens
, which allows speakers to spread sound across a 180-degree angle, enabling the listener to move about the room and not stay fixed in a sweet spot to maximize listening pleasure.
In comparison, the lateral resolution of AR-PAM can be scaled by varying the acoustic central frequency and the NA of the acoustic lens
. Detailed reviews about PAM technologies can be found in two recent publications [2,85].
He ordered B&O's acoustic lens
technology- which created a 'sweet spot' for sound throughout the car-for the A8.
It is this structure that forms a visible bulge on the animal's head and researchers say it acts as an adjustable acoustic lens
, focusing the sound into a beam and altering the size of that beam.
The built-in centre loudspeaker, the BeoLab 10, utilises Bang & Olufsen Acoustic Lens
Technology which disperses sound at a 180-degree angle.
It incorporates Bang & Olufsen's proprietary ICEpower technology and the automatically-operated Acoustic Lens
Technology (ALT) motorised tweeter units.
Figure 4 demonstrates a similar model of the distortion of the ultrasound image, when the specimen has defects filled with liquid, for example, water spots, performing a sort of acoustic lens
function and causing unwanted ultrasound beam breakage, as in the example.
Already proving popular in the Audi Q7 UK order book, the bespoke Bang & Olufsen Advanced Sound System boasts 14 speakers, unique acoustic lens
tweeters and Bang & Olufsen's patented ICEpower digital amplifier technology.