公开(公告)号：US09154868B2

公开(公告)日：2015-10-06

申请号：US13773276

申请日：2013-02-21

Applicant: Wolfson Microelectronics plc

Inventor： Renjish Kodappully Narayan ,  Steven Llewellyn

IPC: A61F11/06 ,  G10K11/16 ,  H03B29/00 ,  H04R1/10 ,  H04R3/00 ,  H04R5/04

CPC classification number: H04R1/1083 ,  H04R1/1016 ,  H04R3/005 ,  H04R3/007 ,  H04R5/04 ,  H04R2410/05 ,  H04R2430/01

Abstract: An earphone comprises an earphone body, containing a speaker, and a projection, extending from a first surface of the earphone body, for location in the entrance to the user's ear canal. The earphone body comprises a sound outlet in the first surface, for allowing sounds generated by the speaker to leave the earphone body. The projection extends from the first surface of the earphone body, adjacent to the sound outlet, and contains a sound inlet port, connected to a microphone for detecting sounds entering the ear canal. A noise cancellation system includes noise cancellation circuitry, for applying a frequency dependent filter characteristic and applying a gain to an input signal representing ambient noise, at least one of the frequency dependent filter characteristic and the gain being adaptive. The earphone then has an ambient noise microphone, and an error microphone connected to the sound inlet port.

Abstract translation: 耳机包括耳机体，其包含扬声器和从耳机主体的第一表面延伸的用于位于使用者耳道入口处的突出部。 耳机主体包括在第一表面中的声音出口，用于允许扬声器产生的声音离开耳机主体。 突出部从耳机本体的第一表面延伸出来，邻近声音出口，并且包含连接到麦克风的声音入口端口，用于检测进入耳道的声音。 噪声消除系统包括噪声消除电路，用于施加频率相关滤波器特性，并对表示环境噪声的输入信号应用增益，频率相关滤波器特性和增益中的至少一个是自适应的。 然后耳机具有环境噪声麦克风，以及连接到声音入口的错误麦克风。

公开(公告)号：US20130216060A1

公开(公告)日：2013-08-22

申请号：US13773276

申请日：2013-02-21

Applicant: Wolfson Microelectronics plc

Inventor： Renjish Kodappully Narayan ,  Steven Llewellyn

IPC: H04R1/10

CPC classification number: H04R1/1083 ,  H04R1/1016 ,  H04R3/005 ,  H04R3/007 ,  H04R5/04 ,  H04R2410/05 ,  H04R2430/01

Abstract: An earphone comprises an earphone body, containing a speaker, and a projection, extending from a first surface of the earphone body, for location in the entrance to the user's ear canal. The earphone body comprises a sound outlet in the first surface, for allowing sounds generated by the speaker to leave the earphone body. The projection extends from the first surface of the earphone body, adjacent to the sound outlet, and contains a sound inlet port, connected to a microphone for detecting sounds entering the ear canal. A noise cancellation system includes noise cancellation circuitry, for applying a frequency dependent filter characteristic and applying a gain to an input signal representing ambient noise, at least one of the frequency dependent filter characteristic and the gain being adaptive. The earphone then has an ambient noise microphone, and an error microphone connected to the sound inlet port.

Abstract translation: 耳机包括耳机体，其包含扬声器和从耳机主体的第一表面延伸的用于位于使用者耳道入口处的突出部。 耳机主体包括在第一表面中的声音出口，用于允许扬声器产生的声音离开耳机主体。 突出部从耳机本体的第一表面延伸出来，邻近声音出口，并且包含连接到麦克风的声音入口端口，用于检测进入耳道的声音。 噪声消除系统包括噪声消除电路，用于施加频率相关滤波器特性，并对表示环境噪声的输入信号应用增益，频率相关滤波器特性和增益中的至少一个是自适应的。 然后耳机具有环境噪声麦克风，以及连接到声音入口的错误麦克风。

公开(公告)号：US20140153733A1

公开(公告)日：2014-06-05

申请号：US14024436

申请日：2013-09-11

Applicant: Wolfson Microelectronics plc

Inventor： Steven Llewellyn

IPC: G10K11/16 ,  H04R1/10

CPC classification number: G10K11/16 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/3045 ,  G10K2210/3214 ,  H04R1/10 ,  H04R1/1033 ,  H04R1/1083

Abstract: An earphone has a housing, with a speaker mounted within the housing. A cable inlet contains a cable that includes a wire connected to the speaker. The cable and the cable inlet have different cross-sectional shapes, such that the cable is in contact with the inner surface of the cable inlet over a substantial portion of their length, while a rear volume of the speaker is vented through the cable inlet. This ensures that the cross-sectional area through which the rear volume is vented through the cable inlet remains relatively constant. The earphone may further comprise a microphone, positioned to detect ambient noise approaching the ear of a wearer of the earphone, and the cable may then further include a wire connected to the microphone.

Abstract translation: 耳机具有外壳，扬声器安装在外壳内。 电缆入口包含一根电缆，其中包括连接到扬声器的电线。 电缆和电缆入口具有不同的横截面形状，使得电缆在其长度的大部分上与电缆入口的内表面接触，而扬声器的后部体积通过电缆入口排出。 这确保后部体积通过电缆入口排出的横截面积保持相对恒定。 耳机还可以包括麦克风，定位成检测接近耳机佩戴者的耳朵的环境噪声，并且电缆然后可以进一步包括连接到麦克风的导线。