Results 121 to 130 of about 93,360 (165)

Amplitude measurement in acoustic emission

Review of Scientific Instruments, 1985
A circuit capable of measuring the amplitude of continuous emission and acoustic bursts is presented. The circuit shows linear behavior (+/−5%) over a dynamic range in excess of 65 dB, for frequencies up to 250 KHz. Possible applications are discussed.
openaire   +3 more sources

A Method of Measuring Acoustic Impedance

The Journal of the Acoustical Society of America, 1932
An apparatus s described whereby acoustic impedances may be measured in terms of a known acoustic impedance and the complex ratios of two electrical potentiometer readings to a third. As a known impedance, there is chosen the reactance of a closed tube of uniform bore which is an eighth wave-length long.
openaire   +1 more source

Topological Acoustics

Nature Reviews Materials, 2022
Haoran Xue, Baile Zhang, Yihao Yang
exaly  

Ubiquitous Acoustic Sensing on Commodity IoT Devices: A Survey

IEEE Communications Surveys and Tutorials, 2022
Jun Luo, Chao Cai, Rong Zheng
exaly  

Electrical Control of Surface Acoustic Waves

Nature Electronics, 2022
Karl K Berggren, Marco Colangelo, Linbo Shao   +2 more
exaly  

Nonreciprocity in Acoustic and Elastic Materials

Nature Reviews Materials, 2020
Chiara Daraio, Hussein Nassar, Andrew N Norris   +2 more
exaly  

Acoustic measurement

The Journal of the Acoustical Society of America, 1982
Edwin J. Powter, Robert H. Benton, Eric A. Huth   +2 more
openaire   +1 more source

Non-Reciprocal Transmission of Microwave Acoustic Waves in Nonlinear Parity–Time Symmetric Resonators

Nature Electronics, 2020
Linbo Shao, Wenbo Mao, Lan Yang
exaly  

Controlling Sound With Acoustic Metamaterials

Nature Reviews Materials, 2016
Steven A. Cummer, Johan Christensen
exaly  

Acoustic Measurements

2002
openaire   +2 more sources