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31. 发明授权

US10522129B2 Active acoustic and vibration noise canceling in waterproof camera 有权
公开(公告)号：US10522129B2
公开(公告)日：2019-12-31
申请号：US15726320
申请日：2017-10-05
申请人： GoPro, Inc.
发明人： Erich Tisch , Fabrice Barbier , Magnus Hansson
IPC分类号： H04N5/225 , G10K11/178 , H04R1/08 , H04R1/28
摘要： A camera includes one or more microphone pairs. A first microphone (e.g., a main microphone) is ported to the outside of the camera and captures the desired external audio signal, but may also capture undesired vibrational noise. A second microphone has a similar structure to the first microphone, but is not ported to the outside of the camera. Instead, the second microphone is ported into an enclosed cavity (e.g., 1-2 cubic centimeters in volume). The second microphone may pick up the same vibration excitation and internal acoustic noise as the first microphone but very little of the desired external acoustic sounds around the camera. The unwanted noise can then be removed by subtracting the second audio signal from the second microphone from the main audio signal from the main microphone.

32. 发明申请

US20190096416A1 Multi-Band Noise Gate 审中-公开
公开(公告)号：US20190096416A1
公开(公告)日：2019-03-28
申请号：US15934392
申请日：2018-03-23
申请人： GoPro, Inc.
发明人： Joyce Gorny , Erich Tisch , Per Magnus Fredrik Hansson
IPC分类号： G10L19/02 , G10L19/18 , H03G3/30
摘要： The present disclosure relates to processing a plurality of audio signals. The method includes receiving the plurality of audio signals in the frequency domain and determining an overall attenuation multiplier based on the plurality of audio signals and an overall lookup table that relates decibel values to different overall attenuation multipliers. The method further includes determining an attenuation vector comprising a plurality of bin-specific attenuation multipliers, each bin-specific attenuation multiplier respectively corresponding to a different frequency bin of the plurality of frequency bins. The method further includes scaling each bin-specific attenuation value in the attenuation vector with the overall attenuation multiplier, and editing each of the audio signals based on the scaled bin-specific attenuation values in the attenuation vector.

33. 发明申请

US20180124320A1 DUAL-MICROPHONE CAMERA 审中-公开
公开(公告)号：US20180124320A1
公开(公告)日：2018-05-03
申请号：US15784086
申请日：2017-10-14
申请人： GoPro, Inc.
发明人： Erich Tisch , Fabrice Barbier , Scott Patrick Campbell
IPC分类号： H04N5/232 , H04N1/21 , H04R3/00 , H04N101/00
CPC分类号： H04N5/23258 , G06T7/20 , H04N1/2112 , H04N5/23254 , H04N2101/00 , H04N2201/3264 , H04N2201/3277 , H04R3/005 , H04R2410/07 , H04R2499/11
摘要： A camera is configured with multiple microphones to reduce wind noise in audio data collected by the camera. The camera receives motion data, which may comprise data indicating acceleration of the camera, a plurality of video frames received by the camera, or a background level of noise associated with one or more microphones configured on the camera. The camera determines a motion vector from the motion data. The motion vector is parallel to the direction of motion of the camera. The camera selects a subset of one or more microphones in the direction of the motion vector. By recording audio data using the one or more selected microphones, the camera reduces wind noise in the audio data.

34. 发明授权

US09807530B1 Generating an audio signal from multiple microphones based on uncorrelated noise detection 有权
公开(公告)号：US09807530B1
公开(公告)日：2017-10-31
申请号：US15396380
申请日：2016-12-30
申请人： GoPro, Inc.
发明人： Erich Tisch , Joyce Rosenbaum , Magnus Hansson , Ke Li , David Wurtz
IPC分类号： H04R29/00 , H04R3/00 , H04R1/08
CPC分类号： H04R29/005 , G06F3/044 , G06F3/165 , G06K9/4671 , H04R1/083 , H04R1/406 , H04R3/005 , H04R5/027 , H04R2410/01 , H04R2410/07 , H04R2430/03 , H04R2430/21 , H04R2499/11
摘要： An audio capture device selects between multiple microphones to generate an output audio signal depending on detected conditions. When the presence of wind noise or other uncorrelated noise is detected, the audio capture device selects, for each of a plurality of different frequency sub-bands, an audio signal having the lowest noise and combines the selected frequency sub-bands signals to generate an output audio signal. When wind noise or other uncorrelated noise is not detected, the audio capture device determines whether each of a plurality of microphones are wet or dry and selects one or more audio signals from the microphones depending on their respective conditions.

35. 发明申请

US20170006396A1 Automatic Microphone Selection in a Sports Camera 有权
标题翻译：运动相机中的自动麦克风选择
公开(公告)号：US20170006396A1
公开(公告)日：2017-01-05
申请号：US15083262
申请日：2016-03-28
申请人： GoPro, Inc.
发明人： Zhinian Jing , Erich Tisch , Ke Li , Paul Beckmann
IPC分类号： H04R29/00 , H04R3/00
CPC分类号： H04N5/2252 , G03B17/08 , H04R1/44 , H04R3/00 , H04R3/005 , H04R5/04 , H04R29/004 , H04R2410/05 , H04R2410/07 , H04R2499/11
摘要： An audio capture system for a sports camera includes at least one “enhanced” microphone and at least one “reference” microphone. The enhanced microphone includes a drainage enhancement feature to enable water to drain from the microphone more quickly than the reference microphone. A microphone selection controller selects between the microphones based on a microphone selection algorithm to enable high quality in conditions where the sports camera transitions in and out of water during activities such as surfing, water skiing, swimming, or other wet environments.
摘要翻译：用于运动照相机的音频捕获系统包括至少一个“增强”麦克风和至少一个“参考”麦克风。增强型麦克风包括排水增强功能，使得水能够比参考麦克风更快地从麦克风中排出。麦克风选择控制器基于麦克风选择算法在麦克风之间进行选择，以在诸如冲浪，滑水，游泳或其它湿润环境的活动期间在运动相机转入和移出水的条件下实现高质量。

36. 发明申请

US20160142579A1 Audio Signal Level Estimation in Cameras 有权
标题翻译：相机中的音频信号电平估计
公开(公告)号：US20160142579A1
公开(公告)日：2016-05-19
申请号：US14548146
申请日：2014-11-19
申请人： GoPro, Inc.
发明人： Paul Beckmann , Erich Tisch , Eric Jing
IPC分类号： H04N1/21
CPC分类号： H04N9/802 , G10L21/0216 , G10L21/0264 , G10L2021/02166 , H04N1/2125 , H04N9/7908 , H04R3/005 , H04R2499/11
摘要： A camera system includes a first microphone, a second microphone, and a microphone controller. The first microphone and the second microphone are configured to capture audio over a time interval to produce a first captured audio signal and a second captured audio signal, respectively. The second captured audio signal is dampened relative to the first captured audio signal by a dampening factor. The microphone controller is configured to store the first captured audio signal in response to a determination that the first captured audio signal does not clip. In response to a determination that the first captured audio signal clips, the microphone controller is configured to identify a gain between the first captured audio signal and the second captured audio signal representative of the dampening factor, amplify the second captured audio signal based on the identified gain, and store the amplified second captured audio signal.
摘要翻译：相机系统包括第一麦克风，第二麦克风和麦克风控制器。第一麦克风和第二麦克风被配置为在一段时间间隔内捕获音频以分别产生第一捕获音频信号和第二捕获音频信号。第二捕获的音频信号相对于第一捕获的音频信号被阻尼因子衰减。麦克风控制器被配置为响应于确定第一捕获的音频信号不被剪切而存储第一捕获的音频信号。响应于确定第一捕获的音频信号剪辑，麦克风控制器被配置为识别代表衰减因子的第一捕获音频信号和第二捕获音频信号之间的增益，基于所识别的音频信号放大第二捕获音频信号增益并存储放大的第二捕获音频信号。

37. 发明授权

US12052542B2 Dynamic wind noise compression tuning 有权
公开(公告)号：US12052542B2
公开(公告)日：2024-07-30
申请号：US18142286
申请日：2023-05-02
申请人： GoPro, Inc.
发明人： Erich Tisch
IPC分类号： H04R1/28 , G06F16/901 , H04R1/22
CPC分类号： H04R1/2884 , G06F16/9017 , H04R1/222 , H04R2410/07
摘要： An image capture device with dynamic wind noise compression tuning techniques is described. A technique includes detecting of the presence of wind noise by measuring coherence between at least two microphones. For a compressor, adjusting a default compression threshold and default compression parameters based on the coherence measurements. For each microphone, applying by the compressor the adjusted compression parameters when an audio signal is above the adjusted compression threshold and applying the default compression parameters when the audio signal is below the adjusted compression threshold.

38. 发明授权

US12002492B2 Apparatus and method of removing selective sounds from a video 有权
公开(公告)号：US12002492B2
公开(公告)日：2024-06-04
申请号：US17979017
申请日：2022-11-02
申请人： GoPro, Inc.
发明人： Erich Tisch , Paul Finkel
IPC分类号： G11B27/031 , G08B3/00 , H04N5/91
CPC分类号： G11B27/031 , G08B3/00 , H04N5/91
摘要： An apparatus including a microphone, a speaker, and a processor. The speaker is configured to produce a sound that indicates an image capture device including the microphone is recording. The microphone is configured to receive the sound. The processor is configured to initiate a sound removal process to remove the sound, produce the sound through the speaker to indicate that the image capture device is recording a video that includes audio, and, after the sound is produced, stop the sound removal process.

39. 发明公开

US20240089653A1 MULTI-MICROPHONE NOISE FLOOR MITIGATION 审中-公开
公开(公告)号：US20240089653A1
公开(公告)日：2024-03-14
申请号：US17940805
申请日：2022-09-08
申请人： GoPro, Inc.
发明人： Erich Tisch , Eric Steven Penrod , Timothy Dick , Mark Hardin , Hakim Mesiwala
IPC分类号： H04R3/00 , H04R1/02 , H04R1/40 , H04R3/04
CPC分类号： H04R3/005 , H04R1/028 , H04R1/406 , H04R3/04 , H04R2410/01 , H04R2499/11
摘要： An image capture device reduces noise floor using multiple microphones. The image capture device includes a processor that obtains a front microphone signal from a front microphone, the front microphone signal having a noisy noise floor portion, obtains a rear microphone signal from a rear microphone, sets a splice point based on mitigation of the noisy noise floor portion relative to a speech frequency range, and combines a substantially clean noise floor portion of the rear microphone signal at or below the splice point with a remaining portion of the front microphone signal above the splice point to generate a microphone signal.

40. 发明公开

US20240078992A1 DETECTION AND MITIGATION OF A WIND WHISTLE 审中-公开
公开(公告)号：US20240078992A1
公开(公告)日：2024-03-07
申请号：US17901121
申请日：2022-09-01
申请人： GoPro, Inc.
发明人： Erich Tisch
IPC分类号： G10K11/178
CPC分类号： G10K11/17821 , G10K2210/105
摘要： An image capture device detects a wind whistle using two or more microphones. The image capture device includes a processor that obtains microphone signals from the two or more microphones and measures coherence values between the microphone signals across a frequency band. The frequency band includes frequency bins, and the processor measures a coherence value for each frequency bin. Based on a detection of an elevated coherence value in a frequency bin, the processor determines the presence of a whistle. The processor attenuates the frequency bin based on a determination that the elevated coherence value is above a threshold.

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