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    SCALABLE DIVERSITY DEPLOYMENT FOR WIDE TUNING RANGE TRANSCEIVER
    1.
    发明申请
    SCALABLE DIVERSITY DEPLOYMENT FOR WIDE TUNING RANGE TRANSCEIVER 有权

    公开(公告)号：US20230086650A1

    公开(公告)日：2023-03-23

    申请号：US17717541

    申请日：2022-04-11

    申请人： Shure Acquisition Holdings, Inc.

    发明人： Thomas J. Kundmann ,  Michael J. Goodson

    IPC分类号： H04B1/401 ,  H04B1/00

    摘要： A wireless communication system with scalable diversity and multi-transceiver diversity deployment is disclosed. An example communication system includes a first wireless transceiver, having a first bandwidth and a first center frequency, a second transceiver, having a second bandwidth and a second center frequency, and a processor. The processor is configured to operate the wireless communication system in a first mode when a difference between the first center frequency and the second center frequency is greater than or equal to half of the first bandwidth plus the second bandwidth. The processor is also configured to operate the wireless communication system in a second mode when a difference between the first center frequency and the second center frequency is less than half of the first bandwidth plus the second bandwidth.

    MASK NON-LINEAR PROCESSOR FOR ACOUSTIC ECHO CANCELLATION
    2.
    发明申请
    MASK NON-LINEAR PROCESSOR FOR ACOUSTIC ECHO CANCELLATION 有权

    公开(公告)号：US20230065067A1

    公开(公告)日：2023-03-02

    申请号：US17823295

    申请日：2022-08-30

    申请人： Shure Acquisition Holdings, Inc.

    发明人： Justin Joseph Sconza

    IPC分类号： G10K11/178 ,  H04M9/08

    摘要： Acoustic echo cancellation systems and methods are provided that can generate a continuous mask value that can be used as a gain of a non-linear processor. Communication between a loudspeaker and the non-linear processor can be utilized to adjust the threshold of the non-linear processor when the loudspeaker is active to assist in suppressing far end single talk leakage. The systems and methods can improve the removal of residual echo and therefore enhance the overall performance of the acoustic echo cancellation system.

    SOFT DECISION AUDIO DECODING SYSTEM
    3.
    发明申请
    SOFT DECISION AUDIO DECODING SYSTEM 有权

    公开(公告)号：US20230008365A1

    公开(公告)日：2023-01-12

    申请号：US17682568

    申请日：2022-02-28

    申请人： Shure Acquisition Holdings, Inc.

    发明人： Robert Mamola

    IPC分类号： G06F3/16 ,  G10L19/00 ,  G10L19/005

    摘要： A soft decision audio decoding system for preserving audio continuity in a digital wireless audio receiver is provided that deduces the likelihood of errors in a received digital signal, based on generated hard bits and soft bits. The soft bits may be utilized by a soft audio decoder to determine whether the digital signal should be decoded or muted. The soft bits may be generated based on the detected point and a detected noise power, or by using a soft-output Viterbi algorithm. The value of the soft bits may indicate confidence in the strength of the hard bit generation. The soft decision audio decoding system may infer errors and decode perceptually acceptable audio without requiring error detection, as in conventional systems, as well as have low latency and improved granularity.

    OFDMA baseband clock synchronization
    5.
    发明授权
    OFDMA baseband clock synchronization 有权

    公开(公告)号：US11343066B2

    公开(公告)日：2022-05-24

    申请号：US17194983

    申请日：2021-03-08

    申请人： Shure Acquisition Holdings, Inc.

    发明人： Michael Rodriguez ,  Honghui Xu

    IPC分类号： H04L7/00 ,  H04L27/26 ,  H04J11/00 ,  H04L5/00

    摘要： A method for synchronizing baseband clocks in an OFDMA wireless microphone system is disclosed. An example method includes receiving a plurality of pilot subcarriers from an audio transmitter. The method also includes determining a timing offset estimate based on the pilot subcarriers. The method further includes determining a tuning value by passing the timing offset estimate through a proportional-integral controller. The method still further includes determining a modified reference signal by modifying a reference oscillator based on the tuning value. And the method yet further includes controlling (i) an audio sample clock and (ii) an antenna data clock based on the modified reference signal.