This is our latest selection of worldwide publications and patents in english on Acoustics, between many scientific online journals, classified and focused on acoustic, sound waves, acoustic absorption, sound pressure, acoustic impedance, frequency response, reverberation, waveform and Doppler.
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Method and system for monitoring rock failure process
Patent published on the 2025-06-25 in ZA under Ref ZA202409026 by HUZHOU VOCATIONAL AND TECHNICAL COLLEGE [CN] (Niu Jiangrui [cn], Su Yingqiang [cn], Sun Lu [cn], Xie Enpu [cn])
Abstract: The invention discloses a method and a system for monitoring the rock failure process, which includes the following steps: acquiring comprehensive characteristic information of a rock sample; the acoustic emission signals of rock samples during the loading process are obtained in real time, and the spatial distribution characteristics of micro-cracks are determined by combining the comprehensive characteristic information; acquiring and preprocessing three-dimensional structural image data to ob[...]
Our summary: Method and system for monitoring rock failure process. Acquiring comprehensive characteristic information of a rock sample, determining spatial distribution characteristics of micro-cracks, and establishing a rock failure prediction model using machine learning algorithm.
rock failure process, monitoring system, acoustic emission signals, machine learning algorithm
Patent
Quantum microwave-to-optical transducer and associated methods
Patent published on the 2025-06-19 in WO under Ref WO2025128892 by GOVERNMENT OF THE US SECRETARY OF COMMERCE [US] (Silverman Kevin Lawrence [us], Decrescent Ryan Anthony [us], Mirin Richard Paul [us], Autry Travis [us], Wang Zixuan [us], Imany Poolad [us])
Abstract: A quantum transducer includes a back gate having a doped semiconductor layer, a tunnel barrier located above the doped semiconductor layer, a quantum dot contacting a top surface of the tunnel barrier, a cap layer located above the tunnel barrier and covering the quantum dot, a surface acoustic wave (SAW) resonator located above the cap layer, a SAW transducer coupled to the SAW resonator, and a top gate located above the SAW resonator. The SAW resonator is mechanically coupled to the quantum do[...]
Our summary: Quantum transducer with back gate, doped semiconductor layer, tunnel barrier, quantum dot, cap layer, SAW resonator, SAW transducer, top gate. Depth and conductivity of doped layer selected to minimize SAW attenuation and achieve high piezoelectric coupling constant.
quantum transducer, microwave-to-optical, surface acoustic wave resonator, piezoelectric coupling constant
Patent
Catheter system with multiple energy sources
Patent published on the 2025-03-06 in WO under Ref WO2025049683 by SHOCKWAVE MEDICAL INC [US] (Hasenberg Thomas Charles [us], Peng Steven Yihlih [us], Stephens Patrick [us])
Abstract: A catheter system for treating stenosis in a body lumen includes a first energy source, a second energy source, and a catheter. The catheter includes an elongate member that is navigable through the body lumen, a first acoustic energy emitter connected to the first energy source and configured to emit acoustic energy when energy is received from the first energy source, and a second acoustic energy emitter connected to the second energy source and configured to emit acoustic energy when energy i[...]
Our summary: A catheter system with multiple energy sources for treating stenosis in a body lumen, including first and second acoustic energy emitters connected to different energy sources.
catheter system, multiple energy sources, stenosis treatment, acoustic energy
Patent
Method for non-destructive acoustic testing of ceramic post insulators
Patent published on the 2025-03-06 in WO under Ref WO2025048672 by OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOSTJU NAUCHNO PROIZVODSTVENNOE OBEDINENIE LOGOTEKH [RU] (Tukachyov Ivan Grigor'evich [ru], Komar Sergej Sergeevich [ru])
Abstract: A method for the non-destructive acoustic testing of the mechanical strength of a ceramic post insulator includes exciting natural vibrations in an insulator, converting the natural vibrations into an electrical signal, recording said signal on a machine-readable carrier, calculating the energy spectrum of the signal in the tested frequency band, and checking that the calculated energy spectrum meets set diagnostic criteria. The insulator is declared fit for use if the maximum value of the energ[...]
Our summary: Method for non-destructive acoustic testing of ceramic post insulators includes exciting natural vibrations, converting vibrations into electrical signal, calculating energy spectrum, and checking against diagnostic criteria to determine fitness for use. Reduces error probability in assessing insulator condition.
acoustic testing, ceramic post insulators, non-destructive, mechanical strength
Patent
Underwater passive observation systems and methods
Patent published on the 2025-03-06 in WO under Ref WO2025048877 by FISHEYE ACOUSTICS LLC [US] (Dantzker Marc [us], Pulkki Ville [fi], Bountourakis Vasileios [fi], Childress Jeremy [us], Weller Charles [us], Fletcher Kent [us])
Abstract: An underwater passive acoustic camera UPAC apparatus includes a generally spherical outer baffle constructed of an acoustically rigid material. At least four acoustic sensors are supported in a spherical configuration on the outer surface of the outer baffle, and an inner baffle is disposed within the inner baffle between the acoustic sensors. The inner baffle has an acoustic impedance substantially lower than an acoustic impedance of water and/or substantially lower than an acoustic impedance o[...]
Our summary: Passive underwater observation system with spherical outer baffle and acoustic sensors for acoustic impedance control.
underwater passive observation systems, acoustic camera, acoustic sensors, acoustically rigid material
Patent
Single-microphone acoustic echo and noise suppression
Patent published on the 2025-03-06 in WO under Ref WO2025049626 by SYNAPTICS INCORPORATED [US] (Mosayyebpour Kaskari Saeed [us], Pouya Atabak [us], Qiu Hong [us])
Abstract: This disclosure provides methods, devices, and systems for audio signal processing. The present implementations more specifically relate to speech enhancement techniques for separating microphone signals into speech, echo, and noise signals. In some aspects, a speech enhancement system may include a delay estimator and an acoustic echo and noise (AEN) decoupling filter. The delay estimator receives a microphone signal via a microphone and a far-end audio signal for output via a speaker and estim[...]
Our summary: Methods for separating microphone signals into speech, echo, and noise signals using delay estimation and acoustic echo and noise decoupling filter.
acoustic echo suppression, noise suppression, speech enhancement, audio signal processing
Patent
