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公开(公告)号:US20120154037A1
公开(公告)日:2012-06-21
申请号:US13333468
申请日:2011-12-21
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。
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公开(公告)号:US20110085678A1
公开(公告)日:2011-04-14
申请号:US12973367
申请日:2010-12-20
申请人: Gerhard Pfaffinger
发明人: Gerhard Pfaffinger
IPC分类号: H04R3/00
摘要: A system for compensating and driving a loudspeaker includes an open loop loudspeaker controller that receives and processes an audio input signal and provides an audio output signal. A dynamic model of the loudspeaker receives the audio output signal, and models the behavior of the loudspeaker and provides predictive loudspeaker behavior data indicative thereof. The open loop loudspeaker controller receives the predictive loudspeaker behavior data and the audio input signal, and provides the audio output signal as a function of the audio input signal and the predictive loudspeaker behavior data.
摘要翻译: 用于补偿和驱动扬声器的系统包括开环扬声器控制器,其接收和处理音频输入信号并提供音频输出信号。 扬声器的动态模型接收音频输出信号,并对扬声器的行为进行建模,并提供指示其的预测扬声器行为数据。 开环扬声器控制器接收预测扬声器行为数据和音频输入信号,并且根据音频输入信号和预测扬声器行为数据提供音频输出信号。
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公开(公告)号:US07864632B2
公开(公告)日:2011-01-04
申请号:US11948494
申请日:2007-11-30
申请人: Gerhard Pfaffinger
发明人: Gerhard Pfaffinger
IPC分类号: G01S3/80
CPC分类号: H04S7/00 , H04R2499/13 , H04S2420/01
摘要: System and method for tracking of a head comprising generating and radiating at least one acoustical test signal; receiving the radiated acoustical test signal(s) at two locations at the head under investigation and generating electrical measurement signals therefrom; and evaluating the two measurement signals for determining the position and/or angle of rotation φ from the measurement signals; the evaluation step comprises a cross power spectrum operation of the test signal(s) and the signals from the receivers in the frequency domain.
摘要翻译: 用于跟踪头部的系统和方法,包括生成和辐射至少一个声学测试信号; 在被调查的头部的两个位置处接收辐射的声学测试信号,并从其产生电测量信号; 并且评估用于确定旋转位置和/或角度的两个测量信号。 从测量信号; 评估步骤包括测试信号的交叉功率谱操作和来自频域中的接收器的信号。
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