公开(公告)号：EP0468610B1

公开(公告)日：1996-02-07

申请号：EP91250205.1

申请日：1991-07-25

申请人： MNC, INC.

发明人： Moseley, William T

IPC分类号： H04R1/10 ,  H04R3/00 ,  G10K11/16

CPC分类号： H04R1/1083 ,  A61F2011/145 ,  B60G2400/61 ,  B60G2800/012 ,  G10K11/178 ,  G10K2210/108 ,  G10K2210/1081 ,  G10K2210/3013 ,  G10K2210/3019 ,  G10K2210/3045 ,  G10K2210/3214 ,  H04R1/1008 ,  H04R3/005 ,  H04R5/033

摘要： A device for performing electroacoustic functions including noise cancellation, communication interface, and headphone functions. The device includes a composite transducer which is connected to a control unit. The composite transducer, which is adapted for use with the human ear, includes at least three transducers, oriented to be substantially coplanar to each other: two oppositely oriented input transducers for converting acoustic waves into electrical signals, and at least one output transducer oriented facing the ear for converting electrical signals into acoustic waves. The control unit includes circuitry for driving the output transducer based on electrical signals from the input transducers with an amplitude and phase to perform the noise cancellation, sound filtering, communication interface, and headphone functions. The input transducer which is oriented facing the ear picks up residual noise present in the ear canal which was not cancelled by the first input transducer to output transducer signal path due to non-ideal frequency and amplitude characteristics. The second input transducer supplies an electrical signal corresponding to the residual noise to the control circuitry to cancel the residual noise. Additionally, the path of acoustic energy from a noise source, through the composite transducer, and to the ear canal can be lengthened by the addition of a baffle around which the acoustic energy must travel.

公开(公告)号：EP0468610A2

公开(公告)日：1992-01-29

申请号：EP91250205.1

申请日：1991-07-25

申请人： MNC, INC.

发明人： Moseley, William T

IPC分类号： H04R1/10 ,  H04R3/00 ,  G10K11/16

CPC分类号： H04R1/1083 ,  A61F2011/145 ,  B60G2400/61 ,  B60G2800/012 ,  G10K11/178 ,  G10K2210/108 ,  G10K2210/1081 ,  G10K2210/3013 ,  G10K2210/3019 ,  G10K2210/3045 ,  G10K2210/3214 ,  H04R1/1008 ,  H04R3/005 ,  H04R5/033

摘要： A device for performing electroacoustic functions including noise cancellation, communication interface, and headphone functions. The device includes a composite transducer which is connected to a control unit. The composite transducer, which is adapted for use with the human ear, includes at least three transducers, oriented to be substantially coplanar to each other: two oppositely oriented input transducers for converting acoustic waves into electrical signals, and at least one output transducer oriented facing the ear for converting electrical signals into acoustic waves. The control unit includes circuitry for driving the output transducer based on electrical signals from the input transducers with an amplitude and phase to perform the noise cancellation, sound filtering, communication interface, and headphone functions. The input transducer which is oriented facing the ear picks up residual noise present in the ear canal which was not cancelled by the first input transducer to output transducer signal path due to non-ideal frequency and amplitude characteristics. The second input transducer supplies an electrical signal corresponding to the residual noise to the control circuitry to cancel the residual noise. Additionally, the path of acoustic energy from a noise source, through the composite transducer, and to the ear canal can be lengthened by the addition of a baffle around which the acoustic energy must travel.

摘要翻译： 用于执行电声功能的装置，包括噪声消除，通信接口和耳机功能。 该装置包括连接到控制单元的复合换能器。 适合与人耳一起使用的复合传感器包括至少三个取向为彼此大致共面的换能器：用于将声波转换为电信号的两个相反方向的输入换能器，以及至少一个朝向 用于将电信号转换成声波的耳朵。 控制单元包括用于基于具有振幅和相位的输入换能器的电信号来驱动输出换能器的电路，以执行噪声消除，声音滤波，通信接口和耳机功能。 面向耳朵的输入传感器拾取耳道中存在的残留噪声，其由于不理想的频率和幅度特性而不被第一输入换能器取消以输出换能器信号路径。 第二输入传感器将对应于残余噪声的电信号提供给控制电路以消除残余噪声。 此外，通过添加声能必须行进的挡板，可以延长来自噪声源，通过复合换能器和耳道的声能的路径。

公开(公告)号：EP0468610A3

公开(公告)日：1992-12-23

申请号：EP91250205.1

申请日：1991-07-25

申请人： MNC, INC.

发明人： Moseley, William T

IPC分类号： H04R1/10 ,  H04R3/00 ,  G10K11/16

CPC分类号： H04R1/1083 ,  A61F2011/145 ,  B60G2400/61 ,  B60G2800/012 ,  G10K11/178 ,  G10K2210/108 ,  G10K2210/1081 ,  G10K2210/3013 ,  G10K2210/3019 ,  G10K2210/3045 ,  G10K2210/3214 ,  H04R1/1008 ,  H04R3/005 ,  H04R5/033

摘要： A device for performing electroacoustic functions including noise cancellation, communication interface, and headphone functions. The device includes a composite transducer which is connected to a control unit. The composite transducer, which is adapted for use with the human ear, includes at least three transducers, oriented to be substantially coplanar to each other: two oppositely oriented input transducers for converting acoustic waves into electrical signals, and at least one output transducer oriented facing the ear for converting electrical signals into acoustic waves. The control unit includes circuitry for driving the output transducer based on electrical signals from the input transducers with an amplitude and phase to perform the noise cancellation, sound filtering, communication interface, and headphone functions. The input transducer which is oriented facing the ear picks up residual noise present in the ear canal which was not cancelled by the first input transducer to output transducer signal path due to non-ideal frequency and amplitude characteristics. The second input transducer supplies an electrical signal corresponding to the residual noise to the control circuitry to cancel the residual noise. Additionally, the path of acoustic energy from a noise source, through the composite transducer, and to the ear canal can be lengthened by the addition of a baffle around which the acoustic energy must travel.