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公开(公告)号：US11693626B2
公开(公告)日：2023-07-04
申请号：US15931860
申请日：2020-05-14
Inventor： John Paul Lesso
CPC classification number: G06F7/523 , G06G7/16 , G06F2207/382
Abstract: The present disclosure relates to a computing system. The computing system comprises a data input configured to receive an input data signal, a computation unit having an input coupled with the data input, the computation unit being operative to apply a weight to a signal received at its input to generate a weighted output signal, and a controller. The controller is configured to monitor a parameter of the input signal and/or a parameter of the output signal and to issue a control signal to the computation unit to control a level of accuracy of the weighted output signal based at least in part on the monitored parameter.
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公开(公告)号：US11653150B2
公开(公告)日：2023-05-16
申请号：US17516830
申请日：2021-11-02
Inventor： John Paul Lesso , Mark James McCloy-Stevens , John Bruce Bowlerwell , Yanto Suryono , Xin Zhao , Morgan Timothy Prior
CPC classification number: H04R5/04 , H03F3/183 , H03G3/3005 , H04R5/02 , H04R29/001 , H04S1/007 , H03G2201/103
Abstract: This application relates to audio driving circuitry (100), and in particular to audio driving circuitry for outputting first and second audio driving signals for driving a stereo audio load (106), which may be a stereo audio load of an accessory apparatus (102) removably coupled to the audio driving circuitry in use. A load monitor (111) is provided for monitoring to monitor, from a monitoring node (112), an indication of a common mode return current passing through a common return path, together with an indication of a common mode component of the first and second audio driving signals and to determine an impedance characteristic of the stereo audio load. The load monitor (111) can provide dynamic monitoring of any significant change in load impedance. In some embodiments the load monitor (111) comprises an adaptive filter (301) which adapts a parameter of the filter which is related to the load impedance so as to determine the indication of load impedance.
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公开(公告)号：US11615803B2
公开(公告)日：2023-03-28
申请号：US17507886
申请日：2021-10-22
Inventor： Thomas Ivan Harvey , John Paul Lesso , William Erik Sherwood , Fredrick D. Geiger
IPC: H04R29/00 , G10L25/51 , A61B5/117 , H04R1/02 , H04R1/10 , H04R3/04 , G02B27/01 , G06F3/01 , H04R25/00
Abstract: A method for use in a biometric process, comprising: with a headset in a known acoustic environment, applying an acoustic stimulus at a first transducer of the headset; receiving a response signal at a second transducer of the headset, the response signal comprising a component of the acoustic stimulus reflected at an obstacle in the acoustic path of the first transducer; determining a condition of the headset based on the response signal; and performing the biometric process based on the determined condition.
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公开(公告)号：US11488583B2
公开(公告)日：2022-11-01
申请号：US16876373
申请日：2020-05-18
Inventor： John Paul Lesso
Abstract: A method of own voice detection is provided for a user of a device. A first signal is detected, representing air-conducted speech using a first microphone of the device. A second signal is detected, representing bone-conducted speech using a bone-conduction sensor of the device. The first signal is filtered to obtain a component of the first signal at a speech articulation rate, and the second signal is filtered to obtain a component of the second signal at the speech articulation rate. The component of the first signal at the speech articulation rate and the component of the second signal at the speech articulation rate are compared, and it is determined that the speech has not been generated by the user of the device, if a difference between the component of the first signal at the speech articulation rate and the component of the second signal at the speech articulation rate exceeds a threshold value.
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公开(公告)号：US11417349B2
公开(公告)日：2022-08-16
申请号：US16803703
申请日：2020-02-27
Inventor： John Paul Lesso , Peter John Frith , John Laurence Pennock
IPC: G06F17/00 , G10L19/16 , H04L25/49 , G10L19/002
Abstract: This application relates to methods and apparatus for transfer of multiple digital data streams, especially of digital audio data over a single communications link such as a single wire. The application describes audio interface circuitry comprising a pulse-length-modulation (PLM) modulator. The PLM is responsive to a plurality of data streams (PDM-R, PDM-L), to generate a series of data pulses (PLM) with a single data pulse having a rising and falling edge in each of a plurality of transfer periods defined by a first clock signal (TCLK). The timing of the rising and falling edge of each data pulse is dependent upon a combination of the then current data samples from the plurality of data streams. The duration and position of the data pulse in the transfer window in effect defines a data symbol encoding the data. Circuitry for receiving and extracting the data is also disclosed. An interface receives the stream of data pulses (PLM) and data extraction circuitry samples the data pulse to determine which of the possible data symbols the pulse represents and determines a data value for at least one received data stream.
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Patent Agency Ranking
公开(公告)号：US11233487B1
公开(公告)日：2022-01-25
申请号：US17014283
申请日：2020-09-08
Inventor： John Paul Lesso
Abstract: The application describes method and apparatus for amplification. An amplifier circuit (300) is described for driving a load (101) connected between first and second output nodes (103p, 103n) based on an input signal (Sin). The amplifier circuit includes first and second signal paths for generating respective first and second driving signals (Soutp and Soutn) at the first and second output nodes, each of the first and second signal paths comprising a respective sigma-delta modulator (301p, 301n). A correlation controller (302) is configured to control the first and second signal paths to provide correlation between at least some noise components of the first and second driving signals.
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公开(公告)号：US11042617B2
公开(公告)日：2021-06-22
申请号：US16028907
申请日：2018-07-06
Inventor： John Paul Lesso
IPC: G06F21/00 , G06F21/32 , G10K11/178
Abstract: Embodiments of the disclosure relate to methods, apparatus and systems for biometric processes. The invention relates to initiating generation of an acoustic stimulus for application to a user's ear and extracting features for use in a biometric process from a measured response signal. The measured response signal may be used to derive one or more quality metrics and the quality metrics may be used to validate features extracted from the measured response. The quality metrics may be used to provide feedback to the user seeking to carry out the biometric process.
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公开(公告)号：US11031940B2
公开(公告)日：2021-06-08
申请号：US16225821
申请日：2018-12-19
Inventor： John Paul Lesso
Abstract: This application relates to sensing circuits for sensing a physical property or quantity of interest. The sensing circuit has an oscillator comprising a hysteretic comparator and a loop filter configured to output an oscillation signal. The loop filter comprises a first component with an electrical property that varies with the physical property or quantity of interest. A time constant of the loop filter depends on the electrical property of the first component. A decoder is configured to receive the oscillation signal and provide an indication of any change in frequency of the oscillation signal as an indication of a change in the physical property or quantity of interest. The electrical property may be an impedance, such as a resistance.
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公开(公告)号：US11024318B2
公开(公告)日：2021-06-01
申请号：US16685264
申请日：2019-11-15
Inventor： John Paul Lesso , Gordon Richard McLeod
Abstract: A method of speaker verification comprises: comparing a test input against a model of a user's speech obtained during a process of enrolling the user; obtaining a first score from comparing the test input against the model of the user's speech; comparing the test input against a first plurality of models of speech obtained from a first plurality of other speakers respectively; obtaining a plurality of cohort scores from comparing the test input against the plurality of models of speech obtained from a plurality of other speakers; obtaining statistics describing the plurality of cohort scores; modifying said statistics to obtain adjusted statistics; normalising the first score using the adjusted statistics to obtain a normalised score; and using the normalised score for speaker verification.
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公开(公告)号：US10984083B2
公开(公告)日：2021-04-20
申请号：US16028863
申请日：2018-07-06
Inventor： John Paul Lesso , Thomas Lorenz
IPC: G06F21/00 , G06F21/32 , G10L17/24 , G10K11/178 , G10L17/00
Abstract: The present invention relates to methods, apparatus and systems for authentication of a user based on ear biometric data, and voice biometric data or other authentication data. The ear biometric data may be combined with voice biometric data or with a security question and response.
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