INTERFERENCE SOUND SUPPRESSING DEVICE, INTERFERENCE SOUND SUPPRESSING METHOD, AND INTERFERENCE SOUND SUPPRESSING PROGRAM

    公开(公告)号:EP4485970A1

    公开(公告)日:2025-01-01

    申请号:EP22935786.8

    申请日:2022-12-28

    Abstract: An interference sound suppressing device includes: an input signal acquiring part that acquires an input signal obtained from a microphone; a reference signal acquiring part that acquires a reference signal; a data inserting part that increases an amount of data of the input signal to be larger than an amount of data of the reference signal by inserting a plurality of zeros into the input signal acquired; an interference sound suppressing part that suppresses an interference sound component included in the input signal by using the input signal having the amount of data increased and the reference signal acquired; a data deleting part that restores the amount of data of the input signal to an original amount by deleting the plurality of zeros inserted from the input signal in which the interference sound component is suppressed; and an output part that outputs the input signal having the amount of data restored.

    SYSTEM AND METHOD FOR POWER AMPLIFIER LINEARIZATION WITH ECHO CANCELATION CAPABILITIES

    公开(公告)号:EP4195503A1

    公开(公告)日:2023-06-14

    申请号:EP23150187.5

    申请日:2018-04-13

    Abstract: A system for power amplifier linearization comprises a power amplifier configured to amplify a transmit signal; a digital-to-analog converter configured to convert the transmit signal to an analog domain; a coupler for coupling the transmit signal after amplifying by the power amplifier to a transmit port; a signal cancelation system for canceling a linear component of the transmit signal from the feedback signal in an analog domain; an analog-to-digital converter for converting the feedback signal after canceling the linear component of the transmit signal to a digital domain; an echo cancelation filter for generating an echo cancelation signal either from the feedback signal after canceling the linear component of the transmit; and a subtractor for subtracting the echo cancelation signal from the receive signal in a digital domain.

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