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公开(公告)号：US20230122089A1
公开(公告)日：2023-04-20
申请号：US17930658
申请日：2022-09-08
申请人： DSP Group Ltd.
发明人： Yaakov CHEN , Moshe TZUR
IPC分类号： G10L21/0216 , G10L25/84
摘要： Noise suppression in audio signals received by a voice activated device is supported with motion sensors. Motion sensors may provide an indication of movement or motion information, such as the linear or rotational displacement of the voice activated device. A noise reduction unit, which is held in idle mode to conserve power, may be activated in response to an indication of movement. When activated, the noise reduction unit may adapt to environmental noise from the new location or orientation, and switch back to idle mode. When speech is subsequently detected in audio signals, the noise reduction unit has already adapted to the noise and accordingly may reduce noise in the audio signal with no delay when activated. Additionally or alternatively, motion information may be used by the noise reduction unit to quickly adapt to noise in the audio signal.
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92.发明授权公开(公告)号：US11451194B2
公开(公告)日：2022-09-20
申请号：US17103880
申请日：2020-11-24
申请人： DSP Group Ltd.
发明人： Sergey Anderson
摘要： A low noise amplifier that may include a first input port, a second input port, a first capacitor, a second capacitor, a first variable capacitor, a second variable capacitor, an inductor, a bias circuit, a tuning circuit, a first output circuit having a first output, a second output circuit having a second output; wherein the first input port is electrically coupled to a first end of the second variable capacitor, to a first end of the first capacitor, to an input of the first output circuit, and to a first port of the inductor; wherein the second input port is electrically coupled to a second end of the first variable capacitor, to a second end of the second capacitor, to an input of the second output circuit, and to a second port of the inductor; wherein a first port of the first varactor is electrically coupled to a second end of the first capacitor; wherein a second port of the second varactor is electrically coupled to a first end of the second capacitor; wherein the bias circuit is configured to supply a bias voltage to a third port of the inductor; and wherein the tuning circuit is configured to control a capacitance of the first varactor and a capacitance of the variable capacitor.
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公开(公告)号：US11360567B2
公开(公告)日：2022-06-14
申请号：US16946139
申请日：2020-06-08
申请人： DSP Group Ltd.
发明人： Nir Michael
摘要： A true wireless headset that may include a housing, a microphone that is mechanically coupled to the housing, wherein the microphone is configured to detect sound and output detection signals indicative of the sound, a tap detector that is configured to receive a first representation of the detection signals, and to process the first representation of the detection signals to determine whether a user tapped on the housing; and at least one additional circuitry that is configured to respond to a determination that the user tapped on the housing.
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公开(公告)号：US11120795B2
公开(公告)日：2021-09-14
申请号：US16445226
申请日：2019-06-19
申请人： DSP Group Ltd.
发明人： Adoram Erell
IPC分类号： G10L15/22 , H04R3/00 , G10L21/0224 , G10L21/0208
摘要： A method for noise cancellation, the method may include detecting a voice trigger or receiving an indication regarding an occurrence of a voice trigger; searching, based at least on a timing of occurrence of the voice trigger, for at least one of a noise-period and a voice-period; when finding a noise period then updating one or more noise parameters based on one or more features of sensed audio signals received during the noise period; when finding a voice period then updating one or more voice parameters based on one or more features of sensed audio signals received during the voice period; estimating, based on the one or more noise parameters and the one or more voice parameters, a probability that voice is present at one or more subsequent periods; and cancelling noise at the one or more subsequent periods, based on the voice presence probability.
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公开(公告)号：US10903806B2
公开(公告)日：2021-01-26
申请号：US15268598
申请日：2016-09-18
申请人： DSP Group LTD.
发明人： Sergey Anderson , Ron Pongratz
IPC分类号： H03F3/213 , H03F3/195 , H03F3/21 , H03F1/02 , H04B1/04 , B82Y40/00 , H03F3/26 , B82Y10/00 , H03F3/24 , H04B1/44
摘要： An integrated circuit that includes a die with an active radio frequency (RF) unit embedded thereon; a first port for receiving an output signal from the active RF unit; a harmonic filter that comprises a first harmonic filter inductor; and a first RF inductive load that is electrically coupled to the first port and is magnetically coupled to the first harmonic filter inductor.
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公开(公告)号：US10733989B2
公开(公告)日：2020-08-04
申请号：US15810169
申请日：2017-11-13
申请人： DSP Group Ltd.
发明人： Uri Yehuday
摘要： A method for proximity-based voice activation, the method may include sensing a voice command, detecting whether a person outputted the voice command while being in proximity to a voice activated device; determining whether to execute, by the voice activated device, the voice command based, at least in part, on the determination whether the person outputted the voice command while being in proximity to the voice activated device; and executing the voice command when determining to execute the voice command.
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公开(公告)号：US10575330B2
公开(公告)日：2020-02-25
申请号：US15420106
申请日：2017-01-31
摘要： A method for determining an attribute of a carrier sense multiple access with collision avoidance (CSMA/CA) scheme, the method may include receiving, by an interface of a wireless communication device, an input signal; calculating, by a processor of the wireless communication device, a strength of the input signal; and determining, by the processor, the attribute of the (CSMA/CA) scheme in response to the strength of the input signal.
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公开(公告)号：US10109182B1
公开(公告)日：2018-10-23
申请号：US15652338
申请日：2017-07-18
申请人： DSP Group Ltd.
发明人： Uri Yehuday
IPC分类号： G08C23/02 , G10L15/22 , G10L15/28 , G10L21/0232
摘要： A method and a system for voice command conversion, the system may include one or more microphones for sensing a voice command for controlling an acoustically controlled device; one or more speech recognition units for identifying the voice command; an ultrasonic command generator for generating an ultrasonic command that represents the voice command; and one or more speakers for transmitting the ultrasonic command to the acoustically controlled device.
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公开(公告)号：US09774959B2
公开(公告)日：2017-09-26
申请号：US15075246
申请日：2016-03-21
申请人： DSP Group LTD.
发明人： Haim Kupershmidt
CPC分类号： H04R19/02 , H04R17/00 , H04R2201/003 , H04R2217/03
摘要： A MEMS speaker that may include a membrane positioned in a first plane, wherein the membrane may be configured to oscillate at a first frequency thereby generating an ultrasonic acoustic signal; and an acoustic modulator that may include a blind and a shutter; wherein the blind may be positioned in a second plane; wherein the shutter may be positioned in a third plane; wherein the first plane, the second plane and the third plane may be substantially separated from each other; and wherein the acoustic modulator may be configured to (a) receive or generate a shutter control signal and a blind control signal, and (b) modulate, in response to the shutter control signal and the blind control signal, the ultrasonic acoustic signal such that an audio signal may be generated.
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公开(公告)号：US09681373B2
公开(公告)日：2017-06-13
申请号：US14298987
申请日：2014-06-09
申请人： DSP Group LTD.
发明人： Graham Kenneth Smith
CPC分类号： H04W52/0206 , H04W52/0225 , H04W52/0232 , H04W84/12 , H04W88/02 , Y02D70/00 , Y02D70/142
摘要： A method for activating a wireless communication device, the method may include receiving, by the wireless communication device, a sequence of periodic transmissions; estimating, for each periodic transmission of the sequence of periodic transmissions and before a reception of the periodic transmission, an expected time of arrival of the periodic transmission; calculating, for each periodic transmission, a timing difference attribute that is responsive to at least a difference between a timing of arrival of the periodic transmission and an expected time of arrival of the periodic transmission; selecting a selected periodic transmission out of the sequence of periodic transmissions, wherein the selected periodic transmission is associated with a smallest timing difference attribute out of the timing difference attributes associated with the periodic transmissions of the sequence of periodic transmissions; estimating, before a reception of a future periodic transmission that does not belong to the sequence of periodic transmissions, an estimated time of arrival of the future periodic transmission in response to the selecting of the selected periodic transmission and a periodic transmission period; determining a wakening time for wakening the wireless communication device in response to the estimated time of arrival of the future periodic transmission; and wakening the wireless communication device at the wakening time and searching for the future periodic transmission.
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