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公开(公告)号：US20240276152A1
公开(公告)日：2024-08-15
申请号：US18439146
申请日：2024-02-12
申请人： USound GmbH
发明人： Andrea Rusconi Clerici Beltrami , Ferruccio Bottoni , Samu Bence Horváth , Christian Novotny , Jakob Spoetl
摘要： In one aspect, a sound transducer unit includes at least two magnet units having a permanent magnetic field and further includes at least two acoustic units. Each acoustic unit has a diaphragm that is deflectable along a stroke axis for generating sound waves. The sound transducer unit also includes a coil arrangement provided in association with each acoustic unit, wherein the coil arrangement is configured to be supplied electric current such that the diaphragm is deflectable along the stroke axis. The at least two magnet units and the at least two acoustic units are arranged alternatively one above the other.
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公开(公告)号：US20240187774A1
公开(公告)日：2024-06-06
申请号：US18526287
申请日：2023-12-01
申请人： USOUND GMBH
CPC分类号： H04R1/1016 , H04R17/00 , H04R2201/003
摘要： The invention relates to an acoustic transducer unit (1), in particular for in-ear headphones, having an electrodynamic acoustic transducer (2) comprising a first membrane (10), preferably with a membrane perforation (42), and having at least one MEMS acoustic transducer (3) comprising a second membrane (30). According to the invention, the acoustic transducer unit (1) comprises a circuit board (58) adapted such that a first rear volume of the electrodynamic acoustic transducer (2) is open and/or closes a second rear volume of the MEMS acoustic transducer (3). The invention further relates to an electronic component and to the use of an acoustic transducer unit.
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公开(公告)号：US20220179243A1
公开(公告)日：2022-06-09
申请号：US17540320
申请日：2021-12-02
申请人： USound GmbH
摘要： Eyewear for outputting audio information to the wearer include an eyewear temple, which has at least one loudspeaker. The eyewear temple is configured for placement on an ear of the wearer and spaced apart from an ear opening of the wearer's ear so that the sound waves generated by the loudspeaker are transmitted over the surroundings to the spaced ear opening. The loudspeaker is an ultrasonic loudspeaker. The eyewear has a parametric audio unit that includes the ultrasonic loudspeaker and configured to generate an audible sound beam directed at the ear.
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公开(公告)号：US11303993B2
公开(公告)日：2022-04-12
申请号：US17030685
申请日：2020-09-24
申请人： USOUND GMBH
摘要： A sound transducer unit for an in-ear headphone, for generating and/or detecting sound waves in the audible wavelength spectrum and/or in the ultrasonic range, includes at least one MEMS sound transducer arranged on a circuit board. At least one connector element of the circuit board is electrically conductively connected to at least one contact element of the MEMS sound transducer. The MEMS sound transducer is designed as a surface-mount device, which is connected to the circuit board with the aid of surface-mount technology. The sound transducer unit can form a component of a sound-generating unit.
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公开(公告)号：US20210377682A1
公开(公告)日：2021-12-02
申请号：US17326521
申请日：2021-05-21
申请人： USound GmbH
摘要： A test device for testing a microphone has at least one test loudspeaker for generating at least one test tone into at least one test cavity. The test device has a compartment for accommodating the microphone to be tested in acoustic communication with the test cavity. The test device has at least one reference microphone for ascertaining a reference signal of the test tone emitted from the test loudspeaker. The test device has a reference cavity separated from the test cavity and acoustically coupled with the reference microphone and the test cavity. The test loudspeaker is arranged between the reference microphone and the test loudspeaker.
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公开(公告)号：US20210092509A1
公开(公告)日：2021-03-25
申请号：US17030685
申请日：2020-09-24
申请人： USOUND GMBH
摘要： A sound transducer unit for an in-ear headphone, for generating and/or detecting sound waves in the audible wavelength spectrum and/or in the ultrasonic range, includes at least one MEMS sound transducer arranged on a circuit board. At least one connector element of the circuit board is electrically conductively connected to at least one contact element of the MEMS sound transducer. The MEMS sound transducer is designed as a surface-mount device, which is connected to the circuit board with the aid of surface-mount technology. The sound transducer unit can form a component of a sound-generating unit.
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公开(公告)号：US20210084423A1
公开(公告)日：2021-03-18
申请号：US17016697
申请日：2020-09-10
申请人： USOUND GMBH
摘要： A method for manufacturing a transducer unit for converting electrical signals into deflections and/or deflections into electrical signals, in which a transducer element is arranged on a support element, which is coupled to a diaphragm unit, which is deflectable along a stroke axis, includes the step of casting a fluid and curable diaphragm material onto a reinforcing element of the diaphragm unit to form a flexible diaphragm element. The diaphragm unit is coupled or coupleable to the transducer element. The diaphragm element, together with the reinforcing element, at least partially form the diaphragm unit. A transducer unit includes a diaphragm unit having a reinforcing element and a flexible diaphragm element formed of a fluid and curable diaphragm material that has been cast onto the reinforcing element.
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公开(公告)号：US20210044688A1
公开(公告)日：2021-02-11
申请号：US16986875
申请日：2020-08-06
申请人： USOUND GMBH
摘要： A mobile phone includes a housing defining a front side, a touchscreen on the front side, and an audio system integrated into the housing. The audio system includes a first hollow space having a primary opening adjacent the touchscreen, a second hollow space, and a loudspeaker between the two hollow spaces. First sound waves are emitted from the loudspeaker to an ear of a user via the primary opening when the mobile phone is used as intended. The second hollow space has a secondary opening on a back side of the housing opposite the front side. The loudspeaker emits second sound waves via the secondary opening away from the ear into the ear's surroundings. The second sound waves are phase-shifted from the first sound waves and the sound level of the sound waves emitted by the audio system into the surroundings can be reduced.
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公开(公告)号：US10820091B2
公开(公告)日：2020-10-27
申请号：US16286870
申请日：2019-02-27
申请人： USOUND GMBH
摘要： A method for operating a piezoelectric speaker for generating sound waves in the audible wavelength spectrum and/or in the ultrasonic range includes at least partially charging a piezo actuator of the piezoelectric speaker with electrical energy of an energy unit and then at least partially discharging the piezo actuator. The method also includes determining at least one present electrical piezo actuator voltage of the piezo actuator. A future input voltage for the piezo actuator is compared with the present electrical piezo actuator voltage prior to charging and/or discharging, and a future differential voltage is derived therefrom. Furthermore, an embodiment of the method can include returning a part of the energy needed to charge the piezo actuator to the energy unit during discharging.
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公开(公告)号：US10812905B2
公开(公告)日：2020-10-20
申请号：US16509997
申请日：2019-07-12
申请人： USound GmbH
摘要： A device and a method for audio signal processing for a piezoelectric speaker for generating sound waves in the audible wavelength spectrum includes a signal input for a digital audio signal, a digital correction unit for correcting a nonlinearity of the speaker, a digital PWM generator that converts the signal corrected by the correction unit into a pulse-width modulated switch signal, a power stage controllable by the switch signal such that the speaker can be charged with a voltage for deflecting a membrane, and a closed-loop control circuit that feeds the voltage back as a feedback signal, which includes a first signal noise in the audible frequency range. The closed-loop control circuit of the device includes a noise shaping unit in that shifts a noise energy of the first signal noise outside of the audible frequency range.
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