公开(公告)号：US20150124982A1

公开(公告)日：2015-05-07

申请号：US14073324

申请日：2013-11-06

Applicant: Kim Spetzler BERTHELSEN ,  Kasper STRANGE

Inventor： Kim Spetzler BERTHELSEN ,  Kasper STRANGE

IPC: H04R29/00

CPC classification number: H04R29/001 ,  H03F1/52 ,  H03F2200/462 ,  H03F2200/471 ,  H03G7/08 ,  H03G9/005 ,  H03G11/04 ,  H04R1/00 ,  H04R3/002 ,  H04R3/007 ,  H04R29/00 ,  H04R29/003

Abstract: A method of estimating diaphragm excursion of an electrodynamic loudspeaker may be performed using audio signals. An audio output signal may be applied to a voice coil of the electrodynamic loudspeaker through an output amplifier to produce sound. A detected voice coil current and a determined voice coil voltage may be applied to a linear adaptive digital loudspeaker model that has a plurality of adaptive loudspeaker parameters. The parameter values of the adaptive loudspeaker parameters may be computed based on the linear adaptive digital loudspeaker model and applied to a non-linear state-space model of the electrodynamic loudspeaker. For the non-linear state-space model, a predetermined non-linear function may be applied to at least one of the plurality of received parameter values to compute at least one non-linearity compensated parameter value of the adaptive loudspeaker parameters, to determine an instantaneous excursion of the diaphragm.

Abstract translation: 可以使用音频信号来执行估计电动扬声器的膜片偏移的方法。 音频输出信号可以通过输出放大器施加到电动扬声器的音圈以产生声音。 可以将检测到的音圈电流和确定的音圈电压施加到具有多个自适应扬声器参数的线性自适应数字扬声器模型。 可以基于线性自适应数字扬声器模型来计算自适应扬声器参数的参数值，并将其应用于电动扬声器的非线性状态空间模型。 对于非线性状态空间模型，可以将预定的非线性函数应用于多个接收参数值中的至少一个，以计算自适应扬声器参数的至少一个非线性补偿参数值，以确定 隔膜的瞬时偏移。

公开(公告)号：US20150229353A1

公开(公告)日：2015-08-13

申请号：US14175480

申请日：2014-02-07

Applicant: Kim Spetzler BERTHELSEN ,  Robert ADAMS ,  Kasper STRANGE

Inventor： Kim Spetzler BERTHELSEN ,  Robert ADAMS ,  Kasper STRANGE

IPC: H04B3/23

CPC classification number: H04B3/23 ,  H04M9/082

Abstract: A feedback cancellation assembly for an electroacoustic communication apparatus may include a signal transmission path for generation and emission of an outgoing sound signal to an external environment through an electrodynamic loudspeaker and a signal reception path comprising a microphone for generation of a microphone input signal corresponding to sound received from the external environment. The signal reception path may generate a digital microphone signal. The outgoing sound signal may be acoustically coupled to the microphone. An electronic feedback cancellation path may be coupled between a tapping node and a summing node to produce a feedback cancellation signal to the summing node.

Abstract translation: 用于电声通信设备的反馈消除组件可以包括用于通过电动扬声器产生和发射到外部环境的输出声音信号的信号传输路径，以及包括用于产生对应于声音的麦克风输入信号的麦克风的信号接收路径 从外部环境收到。 信号接收路径可以产生数字麦克风信号。 输出声音信号可以声学耦合到麦克风。 电子反馈消除路径可以耦合在轻敲节点和求和节点之间以产生到求和节点的反馈消除信号。