公开(公告)号：US20140198925A1

公开(公告)日：2014-07-17

申请号：US14218682

申请日：2014-03-18

Applicant: CAMBRIDGE SILICON RADIO LIMITED

Inventor： Rogerio Guedes Alves ,  Walter Andrés Zuluaga

IPC: G10K11/16

CPC classification number: G10K11/16 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/3025 ,  G10K2210/3026 ,  G10K2210/3028 ,  H04R1/1083 ,  H04R3/005 ,  H04R2430/03 ,  H04R2460/01

Abstract: An active noise cancellation controller for performing noise attenuation in a system over a predetermined frequency rang. The controller comprises several components: a first input for a reference signal indicative of a noise level; a second input for receiving an error signal indicative of a remnant noise level; an output for providing a noise cancellation signal; a fixed feedback controller for processing the error signal; a fixed feed-forward controller for processing the reference signal; and an adaptive feed-forward controller having a digital adaptive finite impulse response filter arranged for operation on the reference signal the error signal.

Abstract translation: 用于在预定频率范围内在系统中执行噪声衰减的主动噪声消除控制器。 控制器包括几个部件：用于指示噪声电平的参考信号的第一输入; 用于接收指示残余噪声电平的误差信号的第二输入; 用于提供噪声消除信号的输出; 用于处理误差信号的固定反馈控制器; 用于处理参考信号的固定前馈控制器; 以及具有数字自适应有限脉冲响应滤波器的自适应前馈控制器，其布置用于对参考信号进行误差信号的操作。

公开(公告)号：US20160012827A1

公开(公告)日：2016-01-14

申请号：US14328574

申请日：2014-07-10

Applicant: Cambridge Silicon Radio Limited

Inventor： Rogerio Guedes Alves ,  Tao Yu

IPC: G10L21/02 ,  G10L21/10 ,  G10K11/178 ,  G10L21/0208 ,  H04R1/40 ,  H04R3/00

CPC classification number: G10L21/0208 ,  G10K11/178 ,  G10K11/1783 ,  G10K11/17857 ,  G10K2210/108 ,  G10K2210/111 ,  G10L2021/02166 ,  H04R1/406 ,  H04R3/005

Abstract: Embodiments are directed towards a speaker/microphone system. Each microphone in a microphone array generate an audio signal based on sound in a physical space. The microphone array may be arranged to logically define the physical space into a plurality of regions that have a status of active or inactive. An output signal may be generated from the audio signals, such that directional noise reduction is performed on audio signals associated with inactive regions and speech enhancement is performed on audio signals associated with active regions. A region's current status may be modified to its opposite status based on a request provided by a user. The request may be triggered by an activator or a spoken word/phrase provided by the user. An indication may be provided to the user regarding each current status for each region. The indication may also represent a quality of audio signals associated with active regions.

Abstract translation: 实施例针对扬声器/麦克风系统。 麦克风阵列中的每个麦克风基于物理空间中的声音产生音频信号。 麦克风阵列可以被布置为将物理空间逻辑地定义为具有活动状态或非活动状态的多个区域。 可以从音频信号产生输出信号，使得对与非活动区域相关联的音频信号执行方向性噪声降低，并且对与有源区域相关联的音频信号执行语音增强。 可以根据用户提供的请求将区域的当前状态修改为相反的状态。 该请求可以由用户提供的激活器或口头单词/短语来触发。 可以向用户提供关于每个区域的每个当前状态的指示。 指示也可以表示与活动区域相关联的音频信号的质量。