公开(公告)号：WO2023065863A1

公开(公告)日：2023-04-27

申请号：PCT/CN2022/117310

申请日：2022-09-06

Applicant: OPPO广东移动通信有限公司

Inventor： 王国龙

IPC: H04B1/00 ,  H03H17/02

Abstract: 一种接收器件、射频系统及通信设备；其中，接收器件包括：滤波组件、接收放大组件；滤波组件包括：输入端口，设置成接收来自天线的接收信号；片内滤波器，设置成对接收的接收信号进行滤波，得到预定频段的接收信号；输出端口，设置成将预定频段的接收信号发送给接收放大组件；接收放大组件设置成对预定频段的接收信号进行功率放大后输出。

公开(公告)号：WO2022193380A1

公开(公告)日：2022-09-22

申请号：PCT/CN2021/086063

申请日：2021-04-09

Applicant: 安徽安努奇科技有限公司

Inventor： 石麒麟 ,  左成杰 ,  何军

IPC: H03H17/02

Abstract: 本文公开一种陷波滤波器与多频陷波滤波器。陷波滤波器包括至少一个陷波滤波单元；每个陷波滤波单元包括输入端口、输出端口、至少三个谐振器和至少一个感性元件；其中，至少三个谐振器包括至少两个第一谐振器和至少一个第二谐振器；至少两个第一谐振器相互串联，串联的至少两个第一谐振器串联于输入端口和输出端口之间，每个第二谐振器的第一端与相邻的两个第一谐振器之间的连接点连接，每个第二谐振器的第二端与固定电位端连接，每个感性元件与一个第二谐振器并联。

公开(公告)号：WO2022095856A1

公开(公告)日：2022-05-12

申请号：PCT/CN2021/128223

申请日：2021-11-02

Applicant: 中兴通讯股份有限公司

Inventor： 徐向阳 ,  何海涛

IPC: H03H17/02

Abstract: 本申请实施例涉及信号处理技术领域，公开了一种滤波方法、服务器及存储介质。本申请实施例中，根据目标信号的带宽确定FRM滤波器的移频量；根据移频量对FRM滤波器进行移频；通过移频后的FRM滤波器对目标信号进行滤波。

公开(公告)号：WO2022055611A1

公开(公告)日：2022-03-17

申请号：PCT/US2021/041240

申请日：2021-07-12

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： SONG, William, S.

IPC: H04L5/06 ,  H03H17/02 ,  H04B1/00

Abstract: A subband channelizer for randomly spaced frequency groups includes: a first-stage channelizer configured to channelize a wideband input into a plurality of intermediate subbands, at least two of the plurality of intermediate subbands being partially overlapped; and a plurality of second-stage channelizers each configured to generate one or more final subbands from one of the plurality of intermediate subbands, wherein the intermediate subbands have wider bandwidth than the final subbands.

公开(公告)号：WO2021092352A1

公开(公告)日：2021-05-14

申请号：PCT/US2020/059372

申请日：2020-11-06

Applicant: BIOSIG TECHNOLOGIES, INC.

Inventor： DRAKULIC, Budimir S. ,  FAKHAR, Sina ,  FOXALL, Thomas G. ,  VLAJINIC, Branislav

IPC: A61B5/00 ,  H03H17/02 ,  G10L21/0208 ,  G10L21/0224 ,  H04B1/10 ,  A61B5/318 ,  A61B5/308 ,  G06F5/10

Abstract: Systems, methods, and computer program product embodiments are disclosed for removing any fixed frequency interfering signal from an input signal without introducing artifacts that are not part of the original signal of interest. An embodiment operates by using a virtual buffer with a length that matches a length of one cycle of an interfering signal. The embodiment extracts the interfering signal into the virtual buffer. For a sample in the next cycle of the interfering signal that corresponds to a virtual memory location for the virtual buffer, the embodiment can update one or more physical memory locations of the virtual buffer that are in the vicinity of the virtual memory location. This use of virtual buffer can remove any interfering signal without creating the artifacts associated with conventional notch filters.

公开(公告)号：WO2021056711A1

公开(公告)日：2021-04-01

申请号：PCT/CN2019/116930

申请日：2019-11-10

Applicant: 珠海市一微半导体有限公司

Inventor： 王莉莉

IPC: H03H17/02

Abstract: 一种用数字电路实现的插值滤波器系统，包括插值过滤运算控制器、级联驱动模块、中间结果缓存RAM和滤波系数存储ROM，插值过滤运算控制器包括级联的滤波器运算模块和主状态机，中间结果缓存RAM，用于存储插值滤波器系统的外部输入的数据和各级滤波器运算模块输出的中间结果；滤波系数存储ROM，用于存储各级滤波器运算模块计算所需的滤波系数；插值过滤运算控制器，用于在级联驱动模块输出的计数节拍的驱动下，控制主状态机选择中间结果缓存RAM或外部直接输入的数据送入级联的滤波器运算模块进行累加操作，也选择滤波系数存储ROM的滤波器系数进行乘法操作，经过级联的滤波器运算模块处理后得到插值滤波的目的。

公开(公告)号：WO2020264064A1

公开(公告)日：2020-12-30

申请号：PCT/US2020/039472

申请日：2020-06-25

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： MCGRATH, David S.

IPC: H03H17/02

Abstract: A filterbank, suitable for modifying audio signals with dynamic gains in each band, is constructed so that the perceived latency is small, while a larger group delay is applied at low frequencies to enable higher frequency resolution in the lower frequency bands. The higher group delay at low frequencies is achieved by inserting an all-pass filter into the reconstructed filter response.

公开(公告)号：WO2020242367A1

公开(公告)日：2020-12-03

申请号：PCT/SE2020/050534

申请日：2020-05-27

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： LAN, Xiaoyu ,  LINDSTÅHL, Simon

IPC: H03H17/02 ,  G06N3/08 ,  H01P7/06

Abstract: A method for solving a sequential decision-making problem is provided. The method includes gathering state-action pair data from an expert policy; applying imitation learning to yield a cloned policy based on the gathered state-action pair data from the expert policy; and applying a reinforcement learning technique, wherein the reinforcement learning technique is initialized based on the cloned policy and has an output with one or more action to be performed for solving the sequential decision-making problem.

公开(公告)号：WO2020145690A1

公开(公告)日：2020-07-16

申请号：PCT/KR2020/000401

申请日：2020-01-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： LEE, Youngbae ,  YUN, Yongseob ,  LEE, Seungwoo ,  CHOI, Jinchul ,  YUN, Yongsang

IPC: G01R29/08 ,  H03H17/02

Abstract: An electronic device and method related to measurement of an electromagnetic (EM) signal emitted from an external electronic device. The electronic device including a processor, a memory, and an EM sensor. The memory stores instructions, which, when executed, enable the processor to: obtain an input signal including an electromagnetic signal of an external electronic device and a self-noise using the EM sensor; identify an ambient condition of the electronic device; identify a compensation self-noise corresponding to the ambient condition; generate a signal pattern, based on the input signal and the compensation self-noise; and identify the external electronic device, based on at least a part of the signal pattern.

公开(公告)号：WO2020074771A1

公开(公告)日：2020-04-16

申请号：PCT/FI2019/050702

申请日：2019-10-01

Applicant: NOKIA TECHNOLOGIES OY

Inventor： RÄMÖ, Anssi ,  LEHTINIEMI, Arto ,  ERONEN, Antti ,  LAAKSONEN, Lasse ,  NIKUNEN, Joonas

IPC: G10K15/12 ,  H04R3/00 ,  H04S7/00 ,  H03H21/00 ,  H03H17/02 ,  G01H7/00 ,  H03H17/04

Abstract: An apparatus, method and computer program is described comprising: receiving a near-field audio source signal from a near-field microphone (22); receiving a far-field audio signal from an array comprising one or more far-field microphones (23); determining a filter length of a first portion of a room impulse response filter for the near-field microphone, wherein said filter length of said first portion is the same at each of a plurality of frequency bands of the filter and wherein said filter length of said first portion includes a direct acoustic propagation delay; and determining a filter length of a second portion of the room impulse response filter at each of the plurality of frequency bands, wherein the filter length of said second portion is frequency-dependent.