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1. 发明申请

US20140126733A1 User Interface for ANR Headphones with Active Hear-Through 审中-公开
标题翻译：用于具有主动听觉的ANR耳机的用户界面
公开(公告)号：US20140126733A1
公开(公告)日：2014-05-08
申请号：US13667092
申请日：2012-11-02
申请人： Daniel M. Gauger, JR. , Misha K. Hill
发明人： Daniel M. Gauger, JR. , Misha K. Hill
IPC分类号： G10K11/16
CPC分类号： H04R1/1083 , G10K11/178 , G10K2210/1081 , G10K2210/3026 , G10K2210/3027 , G10K2210/3055 , G10K2210/3056 , H04R1/1041
摘要： An active noise reducing headphone has an active noise-cancelling mode and an active hear-through mode, and changes between the noise-cancelling mode and the hear-through mode based on detection of a user touching a housing of the headphone or based on a command signal received from an external device. In another aspect, a signal processor in the headphone is configured to change between the active noise-cancelling and active hear-through modes based on a comparison of signals from a feed-forward microphone and a feedback microphone. During the hear-through mode, the signal processor detects high-frequency signals in the feed-forward path exceeding a threshold level indicative of abnormally high acoustic coupling of the output transducer to the feed-forward microphone, and applies a compressing limiter to the feed-forward path until the high-frequency signals are no longer detected at levels above the threshold.
摘要翻译：主动降噪耳机具有主动噪声消除模式和主动听觉模式，并且基于用户触摸耳机的壳体的检测或基于耳机的壳体的变化，在噪声消除模式和听觉模式之间进行改变命令信号从外部设备接收。另一方面，耳机中的信号处理器被配置为基于来自前馈麦克风和反馈麦克风的信号的比较，在有效噪声消除和有效听觉模式之间进行切换。在听觉模式期间，信号处理器检测前馈路径中的高频信号超过阈值电平，指示输出变换器与前馈麦克风的异常高的声耦合，并将压缩限制器应用于馈电直到在高于阈值的电平下不再检测到高频信号。

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