公开(公告)号：US20120154037A1

公开(公告)日：2012-06-21

申请号：US13333468

申请日：2011-12-21

申请人： Gerhard Pfaffinger ,  Franz Lorenz ,  Stefan Zuckmantel ,  Markus Christoph

发明人： Gerhard Pfaffinger ,  Franz Lorenz ,  Stefan Zuckmantel ,  Markus Christoph

IPC分类号： H03G3/20

CPC分类号： H03G3/20 ,  H03F3/181 ,  H03F2200/03 ,  H03F2200/165 ,  H03G7/007

摘要： The audio amplifier includes a variable gain amplifier receiving the input audio signal and providing the output signal, whereby the output signal corresponds to the input signal amplified by a limiter gain. The audio amplifier further includes a limiter gain calculation unit, thus the input signal is amplified by the limiter gain. A control unit receives a signal representative of the input signal and is configured to estimate, based on a mathematical model, the input current or the total output current of the audio amplifier thus providing an estimated current signal corresponding to (and resulting from) the output signal, whereby the limiter gain calculation unit is configured to calculate, dependent on the estimation, the limiter gain such that the actual input current or the total output current of the audio amplifier does not exceed a threshold current value.

摘要翻译： 音频放大器包括可变增益放大器，其接收输入音频信号并提供输出信号，由此输出信号对应于通过限制器增益放大的输入信号。 音频放大器还包括限幅器增益计算单元，因此输入信号被限幅器增益放大。 控制单元接收表示输入信号的信号，并且被配置为基于数学模型来估计音频放大器的输入电流或总输出电流，从而提供对应于输出（并由其产生）的估计电流信号 信号，由此限制器增益计算单元被配置为根据估计来计算限幅器增益，使得音频放大器的实际输入电流或总输出电流不超过阈值电流值。

公开(公告)号：US07123724B1

公开(公告)日：2006-10-17

申请号：US09721428

申请日：2000-11-22

申请人： Gerhard Pfaffinger ,  Franz Lorenz ,  Markus Christoph

发明人： Gerhard Pfaffinger ,  Franz Lorenz ,  Markus Christoph

IPC分类号： H04R5/00 ,  H04R1/40 ,  H03G5/00 ,  H03G9/00

CPC分类号： H04R5/02

摘要： The invention is directed to a sound system with four loudspeakers and at least one signal processing device connected to the input of two loudspeakers and controlled by two input signals. The signal processing device produces control signals for the loudspeakers. The respective control signals are equal to the sum of the input signals which are weighted differently with respect to amplitude and phase, so that the radiation characteristic of the two loudspeakers depends on the weighting of the input signals.

摘要翻译： 本发明涉及一种具有四个扬声器和连接到两个扬声器的输入并由两个输入信号控制的至少一个信号处理装置的音响系统。 信号处理装置产生用于扬声器的控制信号。 相应的控制信号等于相对于幅度和相位不同加权的输入信号的总和，使得两个扬声器的辐射特性取决于输入信号的加权。

公开(公告)号：US09350314B2

公开(公告)日：2016-05-24

申请号：US13333468

申请日：2011-12-21

申请人： Gerhard Pfaffinger ,  Franz Lorenz ,  Stefan Zuckmantel ,  Markus Christoph

发明人： Gerhard Pfaffinger ,  Franz Lorenz ,  Stefan Zuckmantel ,  Markus Christoph

IPC分类号： H04R29/00 ,  H03G7/00

CPC分类号： H03G3/20 ,  H03F3/181 ,  H03F2200/03 ,  H03F2200/165 ,  H03G7/007

摘要： The audio amplifier includes a variable gain amplifier receiving the input audio signal and providing the output signal, whereby the output signal corresponds to the input signal amplified by a limiter gain. The audio amplifier further includes a limiter gain calculation unit, thus the input signal is amplified by the limiter gain. A control unit receives a signal representative of the input signal and is configured to estimate, based on a mathematical model, the input current or the total output current of the audio amplifier thus providing an estimated current signal corresponding to (and resulting from) the output signal, whereby the limiter gain calculation unit is configured to calculate, dependent on the estimation, the limiter gain such that the actual input current or the total output current of the audio amplifier does not exceed a threshold current value.

摘要翻译： 音频放大器包括可变增益放大器，其接收输入音频信号并提供输出信号，由此输出信号对应于通过限制器增益放大的输入信号。 音频放大器还包括限幅器增益计算单元，因此输入信号被限幅器增益放大。 控制单元接收表示输入信号的信号，并且被配置为基于数学模型来估计音频放大器的输入电流或总输出电流，从而提供对应于输出（并由其产生）的估计电流信号 信号，由此限制器增益计算单元被配置为根据估计来计算限制器增益，使得音频放大器的实际输入电流或总输出电流不超过阈值电流值。