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公开(公告)号：US11418891B2
公开(公告)日：2022-08-16
申请号：US16606954
申请日：2018-04-19
申请人： USOUND GmbH
摘要： A loudspeaker unit for a portable device includes an electrodynamic loudspeaker configured as a woofer. The loudspeaker unit additionally includes a MEMS loudspeaker configured as a tweeter. A portable device includes the loudspeaker unit.
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公开(公告)号：US20210266675A1
公开(公告)日：2021-08-26
申请号：US16332558
申请日：2017-09-13
申请人： USound GMBH
摘要： A method is provided for operating a piezoelectric MEMS sound transducer in the audible wavelength spectrum and/or in the ultrasonic range. The method includes storing electrical energy in an energy store and indirectly transferring this electrical energy via a transfer unit between the energy store and the piezoelectric MEMS sound transducer. In a first switching state, the transfer unit is first of all charged from the energy store. In a second switching state, the transfer unit is discharged and the piezoelectric MEMS sound transducer is charged. In a third switching state, the piezoelectric MEMS sound transducer is discharged and the transfer unit is charged. In a fourth switching state, the transfer unit is then discharged and the energy store is charged.
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公开(公告)号：US20210227324A1
公开(公告)日：2021-07-22
申请号：US16494105
申请日：2018-03-16
申请人： USound GmbH
摘要： The invention relates to an amplifier unit for a MEMS sound transducer, which is operable as a microphone and as a loudspeaker, comprising at least one audio amplifier for sound reproduction and/or sound recording. According to the invention, the amplifier unit is designed in such a way that the MEMS sound transducer provided therefor is simultaneously operable as a loudspeaker and as a microphone. Moreover, the invention relates to sound-generating unit comprising a MEMS sound transducer, which is operable as a microphone and as a loudspeaker, and an amplifier unit coupled to the sound transducer for sound reproduction and/or sound recording.
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公开(公告)号：US10826445B2
公开(公告)日：2020-11-03
申请号：US16345428
申请日：2017-10-25
申请人： USOUND GMBH
摘要： An amplifier unit for operating a piezoelectric loudspeaker or microphone includes an audio amplifier and a detection unit, which is configured to detect whether a sound transducer coupled to the amplifier unit is a piezoelectric sound transducer or a dynamic sound transducer. The amplifier unit is configured in such a way that, after a sound transducer has been coupled, the amplifier unit sends a test signal to the coupled sound transducer. Moreover, a sound-generation unit includes a sound transducer and an amplifier unit, which amplifies an audio signal and feeds it to the sound transducer.
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公开(公告)号：US10433063B2
公开(公告)日：2019-10-01
申请号：US15758070
申请日：2016-09-05
申请人： USOUND GMBH
摘要： The invention relates to a MEMS printed circuit board module (1) for a sound transducer assembly (2) for generating and/or detecting surge waves in the audible wavelength spectrum with a printed circuit board (4) and a multi-layer piezoelectric structure (5), by means of which a membrane (6) provided for this purpose can be set into oscillation and/or oscillations of a membrane (6) can be detected. In accordance with the invention, the multi-layer piezoelectric structure (5) is directly connected to the printed circuit board (4). In addition, the invention relates to a sound transducer assembly (2) with such a MEMS printed circuit board module (1) along with a method for the manufacturing of the MEMS printed circuit board module (1) and the sound transducer assembly (2).
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公开(公告)号：US10425741B2
公开(公告)日：2019-09-24
申请号：US15761943
申请日：2016-09-29
申请人： USOUND GMBH
摘要： A sound transducer assembly for generating and/or detecting sound waves in the audible wavelength spectrum includes a membrane, a cavity and a MEMS printed circuit board unit. A MEMS printed circuit board unit for a sound transducer assembly for generating and/or detecting sound waves in the audible wavelength spectrum includes a multi-layer piezoelectric structure embedded in a printed circuit board. The printed circuit board includes a membrane, which the multi-layer piezoelectric structure can oscillate or detect oscillations thereof.
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67.发明申请公开(公告)号：US20190253026A1
公开(公告)日：2019-08-15
申请号：US16345428
申请日：2017-10-25
申请人： USOUND GMBH
摘要： An amplifier unit for operating a piezoelectric loudspeaker or microphone includes an audio amplifier and a detection unit, which is configured to detect whether a sound transducer coupled to the amplifier unit is a piezoelectric sound transducer or a dynamic sound transducer. The amplifier unit is configured in such a way that, after a sound transducer has been coupled, the amplifier unit sends a test signal to the coupled sound transducer. Moreover, a sound-generation unit includes a sound transducer and an amplifier unit, which amplifies an audio signal and feeds it to the sound transducer.
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公开(公告)号：US20180332403A1
公开(公告)日：2018-11-15
申请号：US16016870
申请日：2018-06-25
申请人： USOUND GMBH
CPC分类号： H04R19/02 , H04R1/025 , H04R1/227 , H04R1/24 , H04R3/12 , H04R19/005 , H04R2201/003
摘要： A loudspeaker arrangement for a plurality of MEMS loudspeakers for generating sound waves in the audible wavelength spectrum includes a housing, which has a sound conduction cavity and at least one sound outlet opening, and at least two MEMS loudspeakers, arranged in the interior of the housing opposite and spaced apart from each other by the sound conduction cavity. Each MEMS loudspeaker has a cavity in the region of their opposite faces. The loudspeaker arrangement includes a shielding wall for acoustically decoupling the two MEMS loudspeakers from each other. The shielding wall is arranged in the interior of the housing between the two MEMS loudspeakers such that the sound conduction cavity is subdivided into a first and a second a cavity region respectively associated with one of the two MEMS loudspeakers.
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公开(公告)号：US10097928B2
公开(公告)日：2018-10-09
申请号：US15507303
申请日：2015-09-01
申请人： USOUND GMBH
摘要： A MEMS loudspeaker arrangement for generating sound waves in the audible wavelength spectrum includes a housing that defines a sound-conducting channel and a sound outlet arranged at the end of the sound-conducting channel. At least two MEMS loudspeakers are arranged in the interior of the housing so that they generate sound waves through the sound-conducting channel to the sound outlet. One of the MEMS loudspeakers is disposed downstream of the other in the direction of the sound outlet. A control unit is connected to control the MEMS loudspeakers so as to increase the maximum loudness of the MEMS loudspeaker arrangement. The first of the two MEMS loudspeakers is controlled to function as a sound generator for generating an initial wave, and the second MEMS loudspeaker is controlled to function as a sound amplifier for amplifying the initial wave.
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公开(公告)号：US10097927B2
公开(公告)日：2018-10-09
申请号：US15306203
申请日：2015-04-24
申请人： USound GmbH
摘要： A loudspeaker array includes a MEMS loudspeaker with a diaphragm deflectable along a Z axis; a printed circuit board having a first cavity housing an ASIC electrically connected to the MEMS loudspeaker; and a sound-conducting channel disposed adjacent to the MEMS loudspeaker and having an acoustic outlet opening. The printed circuit board includes a second cavity having an opening, which is closed by the MEMS loudspeaker, so that the second cavity forms at least a part of a cavity of the MEMS loudspeaker. The sound-conducting channel extends at an angle to the Z axis of the MEMS loudspeaker. The acoustic outlet opening is arranged on a side face of the loudspeaker array.
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