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：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。