公开(公告)号：US09930450B2

公开(公告)日：2018-03-27

申请号：US15151630

申请日：2016-05-11

Applicant: ALPINE ELECTRONICS, INC.

Inventor： Minoru Matsuyama

IPC: H03G11/00 ,  H04R3/00 ,  H03G3/30 ,  H03G7/00 ,  H03G7/06 ,  H03G7/08 ,  H03F1/02 ,  H03F3/183 ,  H03F3/21 ,  H04R29/00

CPC classification number: H04R3/007 ,  H03F1/0211 ,  H03F3/183 ,  H03F3/21 ,  H03F2200/03 ,  H03F2200/462 ,  H03F2200/465 ,  H03F2200/471 ,  H03G3/3005 ,  H03G7/002 ,  H03G7/06 ,  H03G7/08 ,  H04R29/001 ,  H04R2499/13

Abstract: An audio apparatus includes a signal processor, a power amplifier, a speaker, and a controller. A current consumption prediction unit in the controller predicts current consumption on the basis of a monitoring result of an output level monitoring unit in the signal processor and/or a monitoring result of a power supply voltage monitoring unit in the controller. A limiter control unit in the controller controls a limiter in the signal processor in a normal mode or a current limiting mode on the basis of predicted current consumption. In the current limiting mode, the limiter is controlled so that an attenuation speed higher than that in the normal mode and a threshold value smaller than that in the normal mode are obtained.

公开(公告)号：US10034090B2

公开(公告)日：2018-07-24

申请号：US15646848

申请日：2017-07-11

Applicant: ALPINE ELECTRONICS, INC.

Inventor： Yoshikazu Maeda ,  Minoru Matsuyama ,  Masashi Saito

IPC: G10L21/0208 ,  H04R3/08 ,  H04R9/02

Abstract: A first fixed filter extracts high-frequency and low-frequency sound signals outside the audible band, and a level integrator integrates levels of the sound signals to obtain a first integrated value. With a second fixed filter, the level integrator integrates levels of sound signals in a low frequency band within the audible band to obtain a second integrated value. A control unit determines whether the high-frequency sound signals are dominant by comparing the first integrated value with the second integrated value. When the high-frequency sound signals are dominant, the control unit attenuates high-frequency speaker drive signals using a variable filter.

公开(公告)号：US20180063639A1

公开(公告)日：2018-03-01

申请号：US15646848

申请日：2017-07-11

Applicant: ALPINE ELECTRONICS, INC.

Inventor： Yoshikazu Maeda ,  Minoru Matsuyama ,  Masashi Saito

IPC: H04R3/08 ,  H04R9/02

CPC classification number: H04R3/08 ,  H04R3/007 ,  H04R9/022 ,  H04R2430/01

Abstract: A first fixed filter extracts high-frequency and low-frequency sound signals outside the audible band, and a level integrator integrates levels of the sound signals to obtain a first integrated value. With a second fixed filter, the level integrator integrates levels of sound signals in a low frequency band within the audible band to obtain a second integrated value. A control unit determines whether the high-frequency sound signals are dominant by comparing the first integrated value with the second integrated value. When the high-frequency sound signals are dominant, the control unit attenuates high-frequency speaker drive signals using a variable filter.

公开(公告)号：US20160360315A1

公开(公告)日：2016-12-08

申请号：US15151630

申请日：2016-05-11

Applicant: ALPINE ELECTRONICS, INC.

Inventor： Minoru Matsuyama

IPC: H04R3/00 ,  H03F1/02 ,  H03F3/21 ,  H04R29/00 ,  H03F3/183

CPC classification number: H04R3/007 ,  H03F1/0211 ,  H03F3/183 ,  H03F3/21 ,  H03F2200/03 ,  H03F2200/462 ,  H03F2200/465 ,  H03F2200/471 ,  H03G3/3005 ,  H03G7/002 ,  H03G7/06 ,  H03G7/08 ,  H04R29/001 ,  H04R2499/13

Abstract: An audio apparatus includes a signal processor, a power amplifier, a speaker, and a controller. A current consumption prediction unit in the controller predicts current consumption on the basis of a monitoring result of an output level monitoring unit in the signal processor and/or a monitoring result of a power supply voltage monitoring unit in the controller. A limiter control unit in the controller controls a limiter in the signal processor in a normal mode or a current limiting mode on the basis of predicted current consumption. In the current limiting mode, the limiter is controlled so that an attenuation speed higher than that in the normal mode and a threshold value smaller than that in the normal mode are obtained.

Abstract translation: 音频装置包括信号处理器，功率放大器，扬声器和控制器。 控制器中的电流消耗预测单元基于信号处理器中的输出电平监视单元的监视结果和/或控制器中的电源电压监视单元的监视结果来预测电流消耗。 控制器中的限制器控制单元基于预测的电流消耗以正常模式或限流模式控制信号处理器中的限制器。 在电流限制模式中，限制器被控制，使得衰减速度高于正常模式，并且获得比正常模式小的阈值。