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公开(公告)号：US10091575B2
公开(公告)日：2018-10-02
申请号：US14789391
申请日：2015-07-01
Applicant: Cisco Technology, Inc.
Inventor： Johan Ludvig Nielsen , Gisle Langen Enstad
Abstract: A method and system for obtaining an audio signal. In one embodiment, the method comprises receiving a first sound signal at a first microphone arranged at a first height vertically above a substantially flat surface; receiving a second sound signal at a second microphone arranged at a second height vertically above the substantially flat surface; processing a signal provided by the first microphone using a low pass filter; processing a signal provided by the second microphone using a high pass filter; adding the signals processed by the low pass filter and the high pass filter to form a sum signal; and outputting the sum signal as an audio signal.
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Patent Agency Ranking
公开(公告)号：US12256173B1
公开(公告)日：2025-03-18
申请号：US17943433
申请日：2022-09-13
Applicant: Cisco Technology, Inc.
Inventor： Gisle Langen Enstad
IPC: H04N7/15 , G06T7/70 , G10L25/06 , G10L25/57 , G10L25/78 , H04L65/403 , H04N5/268 , H04R1/40 , H04R3/00
Abstract: A method comprises, at a video conference system having cameras and microphone arrays each co-located with a corresponding one of the cameras: detecting a face of a participant, and estimating orientations of the face relative to the cameras, based on video captured by the cameras; receiving, from each of the microphone arrays, at least two microphone signals that represent detected audio from the participant; separately correlating the at least two microphone signals from each of the microphone arrays against each other using a correlation function, to produce correlation peaks for the microphone arrays corresponding to the microphone arrays and the cameras; determining a preferred camera among the cameras based on the correlation peaks and the orientations of the face relative to the cameras; and transmitting the video captured by the preferred camera to a network.
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公开(公告)号：US10687139B2
公开(公告)日：2020-06-16
申请号：US16576890
申请日：2019-09-20
Applicant: Cisco Technology, Inc.
Inventor： Gisle Langen Enstad , Haohai Sun , Johan Ludvig Nielsen
Abstract: A microphone array includes one or more front-facing microphones disposed on a front surface of the collaboration endpoint and a plurality of secondary microphones disposed on a second surface of the collaboration endpoint. The sound signals received at each of the one or more front-facing microphones and the plurality of secondary microphones are converted into microphone signals. When the sound signals have a frequency below a threshold frequency, an output signal is generated from microphone signals generated by the one or more front-facing microphones and the plurality of secondary microphones. When the sound signals have a frequency at or above a threshold frequency, an output signal is generated from microphone signals generated by only the one or more front-facing microphones.
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公开(公告)号：US20200120418A1
公开(公告)日：2020-04-16
申请号：US16576890
申请日：2019-09-20
Applicant: Cisco Technology, Inc.
Inventor： Gisle Langen Enstad , Haohai Sun , Johan Ludvig Nielsen
Abstract: A microphone array includes one or more front-facing microphones disposed on a front surface of the collaboration endpoint and a plurality of secondary microphones disposed on a second surface of the collaboration endpoint. The sound signals received at each of the one or more front-facing microphones and the plurality of secondary microphones are converted into microphone signals. When the sound signals have a frequency below a threshold frequency, an output signal is generated from microphone signals generated by the one or more front-facing microphones and the plurality of secondary microphones. When the sound signals have a frequency at or above a threshold frequency, an output signal is generated from microphone signals generated by only the one or more front-facing microphones.
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公开(公告)号：US20200275199A1
公开(公告)日：2020-08-27
申请号：US15930841
申请日：2020-05-13
Applicant: Cisco Technology, Inc.
Inventor： Gisle Langen Enstad , Haohai Sun , Johan Ludvig Nielsen
Abstract: A microphone array includes one or more front-facing microphones disposed on a front surface of the collaboration endpoint and a plurality of secondary microphones disposed on a second surface of the collaboration endpoint. The sound signals received at each of the one or more front-facing microphones and the plurality of secondary microphones are converted into microphone signals. When the sound signals have a frequency below a threshold frequency, an output signal is generated from microphone signals generated by the one or more front-facing microphones and the plurality of secondary microphones. When the sound signals have a frequency at or above a threshold frequency, an output signal is generated from microphone signals generated by only the one or more front-facing microphones.
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公开(公告)号：US20150304765A1
公开(公告)日：2015-10-22
申请号：US14789391
申请日：2015-07-01
Applicant: Cisco Technology, Inc.
Inventor： Johan Ludvig Nielsen , Gisle Langen Enstad
CPC classification number: H04R1/20 , H04R1/08 , H04R3/005 , H04R3/04 , H04R2201/401 , H04R2430/23
Abstract: A method and system for obtaining an audio signal. In one embodiment, the method comprises receiving a first sound signal at a first microphone arranged at a first height vertically above a substantially flat surface; receiving a second sound signal at a second microphone arranged at a second height vertically above the substantially flat surface; processing a signal provided by the first microphone using a low pass filter; processing a signal provided by the second microphone using a high pass filter; adding the signals processed by the low pass filter and the high pass filter to form a sum signal; and outputting the sum signal as an audio signal.
Abstract translation: 一种用于获得音频信号的方法和系统。 在一个实施例中，该方法包括：在布置在垂直于基本平坦表面上的第一高度处的第一麦克风处接收第一声音信号; 在布置在垂直于所述基本平坦表面上方的第二高度处的第二麦克风处接收第二声音信号; 使用低通滤波器处理由第一麦克风提供的信号; 使用高通滤波器处理由第二麦克风提供的信号; 将由低通滤波器和高通滤波器处理的信号相加以形成和信号; 并输出和信号作为音频信号。
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