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1.发明授权公开(公告)号：US12115533B2
公开(公告)日：2024-10-15
申请号：US18520160
申请日：2023-11-27
申请人： ACOUSORT AB
发明人： Mikael Evander , Magnus Hivert
CPC分类号： B01L3/502761 , G10K11/04 , B01L2400/0439
摘要： An acoustofluidic device includes a substrate and an ultrasound transducer contacting the substrate. The substrate and the transducer combined have a set of acoustic natural system resonances determined by the material and the dimensions of the substrate and the transducer. Each system resonance has a resonance frequency and a resonance quality factor. A microfluidic cavity is provided in the substrate to contain a fluid, the cavity having a set of acoustic natural cavity resonances, each having a resonance frequency and a resonance quality factor, determined by the dimensions of the cavity and the speed of sound in a fluid to be contained in the cavity. The material and the dimensions of the substrate and the transducer are selected so that at least one individual cavity resonance has a resonance frequency corresponding to the frequency of a minimum in an impedance spectrum of the transducer.
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2.发明公开公开(公告)号：US20240100521A1
公开(公告)日：2024-03-28
申请号：US18520160
申请日：2023-11-27
申请人： ACOUSORT AB
发明人： Mikael Evander , Magnus Hivert
CPC分类号： B01L3/502761 , G10K11/04 , B01L2400/0439
摘要： An acoustofluidic device is provided comprising a) a substrate, and b) an ultrasound transducer attached to, or in contact with, the substrate. The substrate and the ultrasound transducer combined have a first set of acoustic natural system resonances determined by the material and the dimensions of the substrate and ultrasound transducer. Each system resonance comprises a resonance frequency and a resonance quality factor. The device further comprises c) a microfluidic cavity provided in the substrate and containing a fluid, the cavity having a second set of acoustic natural cavity resonances, each having a resonance frequency and a resonance quality factor, determined by the dimensions of the cavity and the speed of sound in the fluid. The material and the dimensions of the substrate and ultrasound transducer are selected so that at least one individual cavity resonance has a resonance frequency corresponding to the frequency of a minimum in an impedance spectrum of the ultrasound transducer. Method of producing the acoustofluidic device, as well as method of tracking a resonance frequency and performing an acoustofluidic operation are also provided.
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公开(公告)号：US20220310106A1
公开(公告)日：2022-09-29
申请号：US17645400
申请日：2021-12-21
发明人： Thi Hong Thu Nguyen , Kozo Okuda
IPC分类号： G10L21/0208 , G10K11/178 , G10K11/04 , H04R3/00
摘要： An acoustic echo canceller (AEC) uses a simulated echo from an adaptive filter to cancel an actual echo from a real environment. The echo cancellation is optimal when the adaptive filter response accurately matches the environment response. This can be achieved by changing coefficients of the filter in a step-wise fashion until the filter is converged on a configuration that provides optimal results. The convergence of the filter can be negatively affected by interference due to a double talk event or by an event in which the environment is changed. The disclosed AEC is configured to respond to these disruptive events by adjusting a step-size of the adaptive algorithm used to change the coefficients.
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4.发明授权公开(公告)号：US11056090B2
公开(公告)日：2021-07-06
申请号：US16049943
申请日：2018-07-31
IPC分类号： G10K11/162 , G10K11/02 , G10K11/04 , G10K11/20
摘要： A device for use in a medium comprising a medium vibro-acoustic impedance. The device includes an elastic material including a plurality of unit cells. The plurality of unit cells includes a first unit cell. The first unit cell includes a first unit-cell joint comprising a first unit-cell joint wall defining a first joint central void, a first unit-cell joint inclusion located in the first joint central void, and at least two first unit-cell arms connected to and extending away from the first unit-cell joint. The elastic material includes an elastic-material vibro-acoustic impedance. The elastic-material vibro-acoustic impedance and the medium vibro-acoustic impedance are sufficiently vibro-acoustically impedance-matched to couple time-varying, propagating vibro-acoustic fields between said elastic material and the medium.
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公开(公告)号：US20200335077A1
公开(公告)日：2020-10-22
申请号：US16892540
申请日：2020-06-04
申请人： Wing Aviation LLC
发明人： Daniel Ratner
摘要： The present disclosure relates to devices, systems, and methods for controlling and/or augmenting acoustic sounds emitted from flight vehicles, such as unmanned aerial vehicles (UAVs). For example, while in flight, a UAV may emit a characteristic sound or tone (or a plurality of such tones), which may be a result of propeller and/or motor noise. To mitigate such noise from UAVs, disclosed embodiments may include acoustic resonators that may provide additional tones to complement the sounds or tones emitted from the UAV. Namely, the acoustic resonators may be shaped, adjusted, or otherwise controlled to emit additional tones that form pleasing intervals in combination with the characteristic tone(s) from the UAV.
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公开(公告)号：US10197022B2
公开(公告)日：2019-02-05
申请号：US15378201
申请日：2016-12-14
发明人： Eric R. Tucker , John P. Person
摘要： A vehicle and an adjustable sound distribution system that includes an engine operable to produce a pulsation and a sound assembly coupled to the engine. The sound assembly is disposed upstream from the engine. The sound assembly is configured to generate sound from the pulsation. The sound assembly includes a housing defining a cavity configured to resonate the sound that exits the sound assembly. The sound assembly also includes a first member movable to change a frequency of the sound that exits the sound assembly.
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7.发明授权公开(公告)号：US10193524B2
公开(公告)日：2019-01-29
申请号：US15297508
申请日：2016-10-19
申请人： Qorvo US, Inc.
发明人： Rick Morton , John Belsick
IPC分类号： H03H9/17 , B06B1/06 , G01H11/08 , G01N29/02 , G01N29/036 , G01N29/24 , G10K11/04 , G10K11/24 , H03H9/02
摘要： A solidly mounted resonator structure includes an multi-layer acoustic reflector structure and a piezoelectric material layer arranged between the first and second electrode structures to form an active region, with the acoustic reflector structure providing enhanced reflection of shear and longitudinal modes of acoustic vibrations. The solidly mounted resonator structure is configured for transduction of an acoustic wave including a longitudinal component and a shear component. The acoustic reflector structure includes multiple sequentially arranged differential acoustic impedance layer units each including a low acoustic impedance material layer in contact with a high acoustic impedance material layer. A frequency corresponding to a minimum transmissivity of a second harmonic resonance of a longitudinal response is substantially matched to a frequency corresponding to a minimum transmissivity of a third harmonic resonance of a shear response.
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公开(公告)号：US20170287459A1
公开(公告)日：2017-10-05
申请号：US15471370
申请日：2017-03-28
发明人： Yusuke NAKAZAWA
IPC分类号： G10K11/165 , G01S15/89 , G01S7/52 , G10K11/04
CPC分类号： G10K11/165 , A61B8/4281 , A61B8/4411 , A61B8/4494 , G01S7/52053 , G01S15/8925 , G10K11/02 , G10K11/04
摘要： An acoustic matching material supply device includes a frame portion that may be attachable to an ultrasonic probe that includes an ultrasonic sensor surface. The frame portion ejects an acoustic matching material. The frame portion includes an inner peripheral surface, an ejection port, an introduction port, and a flow passage. The ejection port is provided on the inner peripheral surface or in a region including the inner peripheral surface, and ejects the acoustic matching material. The introduction port receives the acoustic matching material from a device external of the frame portion. The flow passage extends between the ejection port and the introduction port, and the ejection port and the introduction port communicate with each other via the flow passage.
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公开(公告)号：US20170284349A1
公开(公告)日：2017-10-05
申请号：US15459238
申请日：2017-03-15
发明人： Takeji KAWAZUMI , Fuyuki HOSOKAWA , Yoji FUKUI
CPC分类号： F02M35/1255 , G10K11/04 , G10K11/161
摘要： In a structure for mounting resonators to a duct, the duct including openings is provided with a plurality of duct-side mounting pieces, and the resonators formed separately from the duct and including communication ports coupled to the openings are provided with a plurality of resonator-side mounting pieces that are mounted to the duct-side mounting pieces. Coupling portions of the duct and the resonators are configured to ensure turning the resonators when the resonators are mounted to the duct. On the plurality of duct-side mounting pieces disposed with intervals in a peripheral direction of the coupling portions, mounting surfaces are formed to be opposed to turning directions of the resonators when mounting the resonators to the duct, the resonator-side mounting pieces being abutted against and mounted to the mounting surfaces. Accordingly, it is possible to turn the resonators when mounting them to the duct and improve attachment work.
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公开(公告)号：US09767783B2
公开(公告)日：2017-09-19
申请号：US15010758
申请日：2016-01-29
IPC分类号： G10K11/04 , G10K11/172 , G03G21/00 , G03G21/16
CPC分类号： G10K11/172 , G03G21/00 , G03G21/1619
摘要： A device includes a sound source, an electric board, an exterior member, an electric board container box, and a sound absorber. The sound source generates a sound at a time of operation. The electric board has a circuit mounting an electrical component. The exterior member surrounds the sound source and the electric board. The electric board container box houses the electric board. The sound absorber is at least partially disposed inside a virtual space corresponding to a thickness of the electric board container box in an interior space of the device.
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