公开(公告)号：US20160134982A1

公开(公告)日：2016-05-12

申请号：US14539245

申请日：2014-11-12

Applicant: HARMAN INTERNATIONAL INDUSTRIES, INC.

Inventor： Ajay IYER

IPC: H04R29/00

CPC classification number: H04R3/08 ,  H04R3/007 ,  H04R29/003

Abstract: A displacement estimation system for estimating cone displacement of a loudspeaker may include an electrical circuit including at least one non-linear component being coupled to a mechanical circuit including at least one non-linear component, and a controller programmed to determine the cone displacement of the loudspeaker based on the at least one non-linear component by using a discrete domain transfer function of a measured current of the electrical circuit, and transmit the displacement to a corrector to correct distortion of an audio signal due to the displacement.

Abstract translation: 用于估计扬声器的锥形位移的位移估计系统可以包括电路，其包括耦合到包括至少一个非线性分量的机械电路的至少一个非线性分量，以及被编程以确定所述扬声器的锥度位移的控制器 基于所述至少一个非线性分量的扬声器，通过使用所述电路的测量电流的离散域传递函数，并且将所述位移发送到校正器以校正由于位移引起的音频信号的失真。

公开(公告)号：US20160127833A1

公开(公告)日：2016-05-05

申请号：US14926352

申请日：2015-10-29

Applicant: Trigence Semiconductor, Inc.

Inventor： Akira YASUDA ,  Jun-ichi OKAMURA

IPC: H04R9/02 ,  H04R9/06 ,  H04R29/00

CPC classification number: H04R29/003 ,  H04R2209/022 ,  H04R2209/041

Abstract: A speaker control device in one embodiment includes a time to digital converter connected to a drive power source in series with a drive circuit for driving a plurality of coils of a speaker, the converter outputting a digital data in accordance with a voltage of the drive power source, and a monitor circuit detecting a state of the plurality of coils of the speaker based on digital data output by the time to digital converter.

Abstract translation: 一个实施例中的扬声器控制装置包括连接到驱动电源的时间数字转换器，该驱动电源与用于驱动扬声器的多个线圈的驱动电路串联，该转换器根据驱动电源的电压输出数字数据 源和监视器电路，其基于由时间到数字转换器输出的数字数据来检测扬声器的多个线圈的状态。

公开(公告)号：US09332347B2

公开(公告)日：2016-05-03

申请号：US14606288

申请日：2015-01-27

Applicant: NXP B.V.

Inventor： Temujin Gautama

IPC: H03G11/00 ,  H04R29/00 ,  H04R3/00 ,  H04R3/08

CPC classification number: H04R3/007 ,  H04R3/002 ,  H04R3/08 ,  H04R29/003

Abstract: A loudspeaker control system is disclosed. The loudspeaker control system includes a loudspeaker, a sensor for measuring a voltage and current and a processor. The processor is adapted to calculate an input-voltage-to-excursion transfer function over time from an admittance function, blocked electrical impedance and force factor, use the input-voltage-to-excursion transfer function over time to predict an excursion and use the excursion to control audio processing of the loudspeaker.

Abstract translation: 公开了一种扬声器控制系统。 扬声器控制系统包括扬声器，用于测量电压和电流的传感器以及处理器。 处理器适用于从导纳函数，阻塞电阻抗和力因子随时间推算输入电压到偏移传递函数，随时间使用输入电压到偏移传递函数来预测偏移量，并使用 偏移以控制扬声器的音频处理。

公开(公告)号：US09277342B2

公开(公告)日：2016-03-01

申请号：US14361722

申请日：2012-11-30

Applicant: Thomas Lukasczyk ,  Waldemar Rempel

Inventor： Thomas Lukasczyk ,  Waldemar Rempel

IPC: H04R29/00

CPC classification number: H04R29/001 ,  H04R29/003

Abstract: A loudspeaker arrangement includes a loudspeaker and a trigger circuit for electrically triggering the loudspeaker. The loudspeaker has a loudspeaker diaphragm for generating an acoustic signal. A digital pulse test signal is applied to the loudspeaker via the trigger circuit during a respective test sequence, the digital pulse test signal having a duty cycle that is predetermined to change such that the duty cycle increases over a plurality of periods of the test sequence at the beginning of the test sequence, and the duty cycle decreases over a plurality of periods of the test sequence at the end of the test sequence. During the respective test sequence, a measurement variable, representative of a voltage drop on a reference circuit connected in series to the loudspeaker, is detected, and the loudspeaker arrangement is classified as functional on the basis of a comparison of the measurement variable and a predetermined reference value.

公开(公告)号：US09232311B2

公开(公告)日：2016-01-05

申请号：US13927980

申请日：2013-06-26

Applicant: PARROT

Inventor： Vu Hoang Co Thuy

IPC: H04R29/00 ,  H04R3/04

CPC classification number: H04R3/04 ,  H04R29/003

Abstract: The method comprises the determination of an observation vector that comprises only electrical measurements of the voltage (Umes) at the loudspeaker terminals and of the current (i) passing through the loudspeaker, and a state vector (X) whose components comprise: values of linear parameters of the loudspeaker response such as the electrical (Re) and mechanical (Req) resistance, and polynomial coefficients of nonlinear parameters such as the force factor (BI), the equivalent stiffness (Keq) and the electrical inductance (Le). The voltage and current measurements are applied to an estimator with a predictive filter of the extended Kalman filter incorporating a representation of a dynamic model of the loudspeaker. This filter operates a prediction of the state vector (X) and readjusts this prediction by calculation of an estimate (Uest) of the voltage based on the state vector and on the measured current and comparison of this estimate with the measurement (Umes) of the voltage.

Abstract translation: 该方法包括确定仅包括扬声器端子处的电压（Umes）和通过扬声器的电流（i）的电气测量的观测矢量，以及状态矢量（X），其分量包括：线性值 诸如电（Re）和机械（Req）电阻的扬声器响应的参数，以及诸如力因子（BI），等效刚度（Keq）和电感（Le）的非线性参数的多项式系数。 将电压和电流测量值应用于具有扩展卡尔曼滤波器的预测滤波器的估计器，其包括扬声器的动态模型的表示。 该滤波器对状态向量（X）进行预测，并且通过基于状态向量计算电压的估计值（Uest）和测量的电流以及该估计值与测量值（Umes）的比较来重新调整该预测。 电压。

公开(公告)号：US08953830B2

公开(公告)日：2015-02-10

申请号：US12377986

申请日：2007-08-21

Applicant: Rune Skramstad

Inventor： Rune Skramstad

IPC: H04R1/20 ,  H04R1/30 ,  H04R1/40 ,  H04R27/00

CPC classification number: H04R1/30 ,  H04R1/403 ,  H04R27/00 ,  H04R29/003 ,  H04R31/00

Abstract: A horn loudspeaker, in particular for reproducing bass sound in public address systems, in which the horn (23) is mounted directly to the driver element (21) without any intervening compression chamber. The back side of the driver element (21) is covered by a back chamber (24) designed with walls of a semi-permeable material. The walls may be perforated or made of a “leaky” material such as cell foam with open structure, or a fibrous material. The “leaky” back chamber will prevent the build up of high pressures in the back chamber at large cone excursions. The horn loudspeaker is suitable for stacking in groups of two or more, so as to produce a sound source scalable for reproducing any frequency range heard by humans in public address systems or hi-fi systems. Due to the back chamber design, the horn loudspeaker, for high frequencies especially in conical horn shaped versions, can be stacked close together. Thus, a sound source including a number of such closely stacked loudspeakers can provide a homogeneous sound field covering a wide area even at high audio frequencies.

Abstract translation: 喇叭扬声器，特别是用于在公共广播系统中再现低音，其中喇叭（23）直接安装到驱动元件（21），而没有任何中间的压缩室。 驱动元件（21）的后侧被设计成具有半渗透材料的壁的后室（24）覆盖。 壁可以是穿孔的或由诸如具有开放结构的细胞泡沫或纤维材料的“泄漏”材料制成。 “泄漏”后室将防止在大的锥体偏移时在后室中产生高压。 喇叭扬声器适用于两个或更多组的堆叠，以便产生可扩展的声源，用于再现人类在公共广播系统或高保真音响系统中听到的任何频率范围。 由于后室设计，用于高频（特别是锥形喇叭形版本）的喇叭扬声器可以堆叠在一起。 因此，包括多个这种紧密叠放的扬声器的声源可以提供甚至在高音频频率下覆盖广泛区域的均匀声场。

公开(公告)号：US20150036833A1

公开(公告)日：2015-02-05

申请号：US14361722

申请日：2012-11-30

Applicant: Thomas Lukasczyk ,  Waldemar Rempel

Inventor： Thomas Lukasczyk ,  Waldemar Rempel

IPC: H04R29/00

CPC classification number: H04R29/001 ,  H04R29/003

Abstract: A loudspeaker arrangement includes a loudspeaker and a trigger circuit for electrically triggering the loudspeaker. The loudspeaker has a loudspeaker diaphragm for generating an acoustic signal. A digital pulse test signal is applied to the loudspeaker via the trigger circuit during a respective test sequence, the digital pulse test signal having a duty cycle that is predetermined to change such that the duty cycle increases over a plurality of periods of the test sequence at the beginning of the test sequence, and the duty cycle decreases over a plurality of periods of the test sequence at the end of the test sequence. During the respective test sequence, a measurement variable, representative of a voltage drop on a reference circuit connected in series to the loudspeaker, is detected, and the loudspeaker arrangement is classified as functional on the basis of a comparison of the measurement variable and a predetermined reference value.

Abstract translation: 扬声器装置包括扬声器和用于电触发扬声器的触发电路。 扬声器具有用于产生声信号的扬声器隔膜。 数字脉冲测试信号在相应的测试序列期间通过触发电路施加到扬声器，数字脉冲测试信号具有预定的占空比，以便在多个测试序列的周期内占空比增加 测试序列的开始，并且占空比在测试序列结束时的测试序列的多个周期内减小。 在相应的测试序列期间，检测表示与扬声器串联连接的参考电路上的电压降的测量变量，并且基于测量变量和预定的测量变量的比较将扬声器布置分类为功能 参考值。

公开(公告)号：US08942381B2

公开(公告)日：2015-01-27

申请号：US13490780

申请日：2012-06-07

Applicant: Temujin Gautama

Inventor： Temujin Gautama

IPC: H03G11/00 ,  H04R3/08 ,  H04R29/00 ,  H04R3/00

CPC classification number: H04R3/007 ,  H04R3/002 ,  H04R3/08 ,  H04R29/003

Abstract: A method of controlling a loudspeaker output comprises deriving an admittance function over time from the voice coil voltage and current. In combination with a delta function, the force factor of the loudspeaker and the blocked electrical impedance, the input-voltage-to-excursion transfer function over time is obtained. This is used to control audio processing for the loudspeaker thereby to implement loudspeaker protection and/or acoustic signal processing; The invention provides a modelling and control approach which is not based on a parametric model. As a consequence, it does not require prior knowledge regarding the enclosure (e.g. closed or vented box) and can cope with complex designs of the enclosure.

Abstract translation: 控制扬声器输出的方法包括从音圈电压和电流导出随时间的导纳函数。 结合Δ函数，可以获得扬声器的力因子和阻塞的电阻抗，随着时间的推移，输入电压到偏移传递函数。 这用于控制扬声器的音频处理，从而实现扬声器保护和/或声信号处理; 本发明提供了一种不基于参数模型的建模和控制方法。 因此，它不需要关于外壳（例如封闭或通风箱）的现有知识，并且可以应对外壳的复杂设计。

公开(公告)号：US20140321690A1

公开(公告)日：2014-10-30

申请号：US13871726

申请日：2013-04-26

Applicant: Friedrich Reining

Inventor： Friedrich Reining

IPC: H04R9/02

CPC classification number: H04R9/02 ,  H04R3/007 ,  H04R9/041 ,  H04R9/063 ,  H04R29/003 ,  H04R2209/041

Abstract: An audio system that comprises an electro-acoustic transducer connected to a first driver circuit and a second driver circuit, which electro-acoustic transducer comprises a first coil stacked on a second coil mechanically linked to a membrane, with the coils oscillatingly suspended in the magnetic field of a permanent magnet focused by a pole plate, wherein the first coil and the second coil are mechanical arranged symmetrical to the pole plate in a rest position.

Abstract translation: 一种音频系统，包括连接到第一驱动器电路的电声换能器和第二驱动电路，所述电声换能器包括堆叠在机械连接到膜上的第二线圈上的第一线圈，所述线圈摆动地悬挂在磁 由极板聚焦的永磁体的场，其中所述第一线圈和所述第二线圈在静止位置上机械地布置为与所述极板对称。

公开(公告)号：US20140286495A1

公开(公告)日：2014-09-25

申请号：US14021611

申请日：2013-09-09

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Fumihiko Eya ,  Kazunori Fukudome

IPC: H04R29/00 ,  H04R3/00

CPC classification number: H04R29/001 ,  H04R3/00 ,  H04R29/003 ,  H04R2209/041

Abstract: The acoustic output apparatus includes an output converter that converts an input signal into a plurality of converted signals and outputs the converted signals. The acoustic output apparatus includes a plurality of amplifiers that are provided in a one-to-one relationship with the plurality of converted signals and controlled by the output converter and each of which outputs an output signal obtained by amplifying the converted signal input thereto from the output converter to a load connected to an output thereof. The acoustic output apparatus includes a detector that outputs a detection result to the output converter if the detector detects a failure at the output of any of the plurality of amplifiers.

Abstract translation: 声输出装置包括将输入信号转换为多个转换信号并输出​​转换后的信号的输出转换器。 声输出装置包括多个放大器，它们与多个转换信号以一对一的关系设置并由输出转换器控制，并且每个放大器输出通过从其输入的转换信号放大而获得的输出信号 输出转换器连接到与其输出相连的负载。 声输出装置包括检测器，如果检测器检测到多个放大器中的任何一个的输出处的故障，则将检测结果输出到输出转换器。