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    Monitoring and activating speech process in response to a trigger phrase
    1.
    发明授权
    Monitoring and activating speech process in response to a trigger phrase 有权

    公开(公告)号：US10102853B2

    公开(公告)日：2018-10-16

    申请号：US15105755

    申请日：2014-12-17

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Michael Page

    IPC: G10L15/00 ,  G10L15/22 ,  G10L15/06 ,  G10L15/08 ,  G10L15/32 ,  G10L21/0208

    Abstract: A method of processing received data representing speech comprises monitoring the received data to detect the presence of data representing a first portion of a trigger phrase in said received data. On detection of the data representing the first portion of the trigger phrase, a control signal is sent to activate a speech processing block. The received data is monitored to detect the presence of data representing a second portion of the trigger phrase in said received data. If the control signal to activate the speech processing block has previously been sent, then, on detection of the data representing the second portion of the trigger phrase, the activation of the speech processing block is maintained.

    Voice command triggered speech enhancement
    2.
    发明授权
    Voice command triggered speech enhancement 有权

    公开(公告)号：US10755697B2

    公开(公告)日：2020-08-25

    申请号：US16393542

    申请日：2019-04-24

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Robert James Hatfield ,  Michael Page

    IPC: G10L15/00 ,  G10L15/08 ,  G10L15/22 ,  G10L21/0208 ,  G10L15/06 ,  G10L15/20 ,  G10L15/28 ,  G10L21/0216 ,  G10L25/84

    Abstract: Received data representing speech is stored, and a trigger detection block detects a presence of data representing a trigger phrase in the received data. In response, a first part of the stored data representing at least a part of the trigger phrase is supplied to an adaptive speech enhancement block, which is trained on the first part of the stored data to derive adapted parameters for the speech enhancement block. A second part of the stored data, overlapping with the first part of the stored data, is supplied to the adaptive speech enhancement block operating with said adapted parameters, to form enhanced stored data. A second trigger phrase detection block detects the presence of data representing the trigger phrase in the enhanced stored data. In response, enhanced speech data are output from the speech enhancement block for further processing, such as speech recognition.

    Low power bidirectional bus
    4.
    发明授权
    Low power bidirectional bus 有权

    公开(公告)号：US09935786B2

    公开(公告)日：2018-04-03

    申请号：US15063124

    申请日：2016-03-07

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Willem Zwart ,  John Bruce Bowlerwell ,  Michael Page ,  Alastair Boomer

    IPC: H04L12/40 ,  H04L5/14 ,  G06F13/40 ,  G06F13/42

    CPC classification number: H04L12/40013 ,  G06F13/4027 ,  G06F13/4282 ,  G06F13/4291 ,  G06F2213/0016 ,  H04L5/1476

    Abstract: A method of sending information between first and second modules connected by a signal bus comprises generating a clock signal in the first module, and imposing the clock signal on a first line of the bus. A first pattern of bit values is transmitted from the second module to the first module on a second line of the bus, during first half-periods of each period of said clock signal. A second pattern of bit values is transmitted from the first module to the second module on the second line of the bus, during second half-periods of each period of said clock signal, wherein the second half-periods of each period of said clock signal are different from the first half-periods of each period of said clock signal. Information can then be transmitted from the first module to the second module by altering the second pattern of bit values; and information can be transmitted from the second module to the first module by altering the first pattern of bit values.

    Audio data transfer
    6.
    发明授权
    Audio data transfer 有权

    公开(公告)号：US10957328B2

    公开(公告)日：2021-03-23

    申请号：US16027728

    申请日：2018-07-05

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Michael Page ,  Thomas Ivan Harvey ,  Vitaliy Sapozhnykov

    IPC: G10L17/22 ,  G10L25/51 ,  G06F21/34 ,  G06F21/44 ,  G06F21/32 ,  H04L9/32 ,  G10L19/018 ,  G06F21/60 ,  G06F21/42

    Abstract: This application relates to transfer of microphone data from a microphone (101, 102, 102a, 201) to a processing module, such as voice biometric authentication module (111) in a secure manner, such that the receiving module can trust that the received audio is genuine. An authentication module (203) is configured to receive microphone data (DM) representative of an audio signal received at the microphone (201), and generate from the microphone data, authentication data (DA) for certifying that the microphone data did pass via the authentication module. The first authentication data (DA) comprises information relating to distinguishing characteristics of the audio content of the microphone data and may, for instance be an acoustic fingerprint of the audio content. The authentication data, may be cryptographically signed or encrypted and sent with the microphone audio to allow a receiver to verify that the audio is genuine and the content has not been substantially altered. The process may be robust to processing of the data that results in imperceptible changes in the audio content.

    Voice command triggered speech enhancement
    7.
    发明授权
    Voice command triggered speech enhancement 有权

    公开(公告)号：US10319372B2

    公开(公告)日：2019-06-11

    申请号：US15688380

    申请日：2017-08-28

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Robert James Hatfield ,  Michael Page

    IPC: G10L15/00 ,  G10L15/08 ,  G10L15/22 ,  G10L21/0208 ,  G10L15/06 ,  G10L15/20 ,  G10L15/28 ,  G10L21/0216 ,  G10L25/84

    Abstract: Received data representing speech is stored, and a trigger detection block detects a presence of data representing a trigger phrase in the received data. In response, a first part of the stored data representing at least a part of the trigger phrase is supplied to an adaptive speech enhancement block, which is trained on the first part of the stored data to derive adapted parameters for the speech enhancement block. A second part of the stored data, overlapping with the first part of the stored data, is supplied to the adaptive speech enhancement block operating with said adapted parameters, to form enhanced stored data. A second trigger phrase detection block detects the presence of data representing the trigger phrase in the enhanced stored data. In response, enhanced speech data are output from the speech enhancement block for further processing, such as speech recognition.

    Low power bidirectional bus
    8.
    发明授权
    Low power bidirectional bus 有权

    公开(公告)号：US10218535B2

    公开(公告)日：2019-02-26

    申请号：US15898839

    申请日：2018-02-19

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Willem Zwart ,  John Bruce Bowlerwell ,  Michael Page ,  Alastair Boomer

    IPC: H04L5/14 ,  H04L12/40 ,  G06F13/42 ,  G06F13/40

    Abstract: A method of sending information between first and second modules connected by a signal bus comprises generating a clock signal in the first module, and imposing the clock signal on a first line of the bus. A first pattern of bit values is transmitted from the second module to the first module on a second line of the bus, during first half-periods of each period of said clock signal. A second pattern of bit values is transmitted from the first module to the second module on the second line of the bus, during second half-periods of each period of said clock signal, wherein the second half-periods of each period of said clock signal are different from the first half-periods of each period of said clock signal. Information can then be transmitted from the first module to the second module by altering the second pattern of bit values; and information can be transmitted from the second module to the first module by altering the first pattern of bit values.

    Methods and apparatus for authentication in an electronic device
    9.
    发明授权
    Methods and apparatus for authentication in an electronic device 有权

    公开(公告)号：US10552595B2

    公开(公告)日：2020-02-04

    申请号：US15804714

    申请日：2017-11-06

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Nikesh Oswal ,  Ryan Roberts ,  Michael Page

    IPC: G06F21/32 ,  G06F21/57 ,  G06K9/00 ,  G06F21/60 ,  G10L17/00 ,  G10L17/24

    Abstract: Embodiments of the invention provide methods and apparatus for monitoring the routing configuration within an electronic device such that a biometric authentication process can be carried out without interference from other components of the device, such as may occur when the device has become infected with malware for example. The invention may provide a codec or speaker recognition processor, coupled to receive biometric input data, comprising a security module that determines whether a routing configuration complies with one or more rules. The security module may be implemented to prevent genuine biometric data from being output from the speaker recognition processor, and/or to prevent spoof biometric data from being inserted into the authentication module.

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