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1. 发明授权

US09172394B2 Signal conversion system and method 有权
标题翻译：信号转换系统及方法
公开(公告)号：US09172394B2
公开(公告)日：2015-10-27
申请号：US14382979
申请日：2013-03-06
申请人： Actiwave AB
发明人： Erik Lindahl , Pär Gunnars Risberg
IPC分类号： H03M5/08 , H03K9/08 , H03M3/00 , H04L25/49 , H03K7/08
CPC分类号： H03K7/08 , H03K9/08 , H03M3/506 , H03M5/08 , H04L25/4902
摘要： A signal conversion system and method for converting an input signal to a pulse width modulated signal is disclosed. The signal conversion system includes a sample rate converter coupled with an associated pulse width modulation (PWM) module. A hardware and power efficient signal conversion system for resampling an audio input signal with an arbitrary sample rate to a pulse width modulated output audio signal for use in an audio processor and/or reproduction is disclosed. The signal conversion system may be particularly suitable for use in a battery operated consumer electronics device.
摘要翻译：公开了一种用于将输入信号转换为脉宽调制信号的信号转换系统和方法。信号转换系统包括与相关联的脉宽调制（PWM）模块耦合的采样率转换器。公开了一种硬件和功率有效的信号转换系统，用于将具有任意采样率的音频输入信号重新采样到用于音频处理器和/或再现的脉宽调制输出音频信号。信号转换系统可能特别适用于电池供电的消费电子设备。

2. 发明授权

US09166563B2 Asynchronous sample rate converter 有权
标题翻译：异步采样率转换器
公开(公告)号：US09166563B2
公开(公告)日：2015-10-20
申请号：US14354146
申请日：2012-10-25
申请人： Actiwave AB
发明人： Erik Lindahl , Pär Gunnars Risberg
IPC分类号： H03M7/00 , H03H17/06
CPC分类号： H03L7/23 , H03H17/0614 , H03H17/0628 , H03M3/436
摘要： An asynchronous sample rate converter and method for converting an input signal to a resampled output signal is disclosed. An efficient and cost-effective sample rate converter for converting an input signal of arbitrary sample rate to a resampled output signal of a second sample rate is disclosed. A hardware-efficient sample-rate converter for resampling an audio input signal with an arbitrary sample rate to an output audio signal with a known sample rate for use in an audio processor is disclosed.
摘要翻译：公开了一种用于将输入信号转换为重采样输出信号的异步采样率转换器和方法。公开了一种用于将任意采样率的输入信号转换为第二采样率的再采样输出信号的有效且具有成本效益的采样率转换器。公开了一种用于将具有任意采样率的音频输入信号重新采样到具有用于音频处理器的已知采样率的输出音频信号的硬件效率采样率转换器。

3. 发明申请

US20150010170A1 MULTI-RATE FILTER SYSTEM 审中-公开
标题翻译：多速率滤波系统
公开(公告)号：US20150010170A1
公开(公告)日：2015-01-08
申请号：US14371020
申请日：2013-01-09
申请人： Actiwave AB
发明人： Erik Lindahl , Ludvig Lindblom , Pär Gunnars Risberg , Landy Toth
IPC分类号： H04R3/04
CPC分类号： H04R3/04 , H03H17/0261 , H03H17/0283 , H03H17/0294 , H03H17/0621 , H04R2430/00 , H04R2430/03
摘要： A multi-rate filter system is disclosed. More particularly, a computationally efficient multi-rate filter system for processing an audio stream on a consumer electronics device is disclosed. The multi-rate filter system includes a plurality of multi-rate filtering blocks, at least one block including a linear filter component. At least one multi-rate filtering block may include a nonlinear signal processing components. The multi-rate filter system may include a nonlinear functional block. A method of filtering a signal is also disclosed.
摘要翻译：公开了一种多速率滤波器系统。更具体地，公开了一种用于处理消费电子设备上的音频流的计算有效的多速率滤波器系统。多速率滤波器系统包括多个多速率滤波块，至少一个包括线性滤波器组件的块。至少一个多速率滤波块可以包括非线性信号处理组件。多速率滤波器系统可以包括非线性功能块。还公开了一种滤波信号的方法。

4. 发明申请

US20160043709A1 SIGNAL CONVERSION SYSTEM AND METHOD 有权
公开(公告)号：US20160043709A1
公开(公告)日：2016-02-11
申请号：US14920089
申请日：2015-10-22
申请人： ACTIWAVE AB
发明人： Erik Lindahl , Pär Gunnars Risberg
IPC分类号： H03K7/08
CPC分类号： H03K7/08 , H03K9/08 , H03M3/506 , H03M5/08 , H04L25/4902
摘要： A signal conversion system and method for converting an input signal to a pulse width modulated signal is disclosed. The signal conversion system includes a sample rate converter coupled with an associated pulse width modulation (PWM) module. A hardware and power efficient signal conversion system for resampling an audio input signal with an arbitrary sample rate to a pulse width modulated output audio signal for use in an audio processor and/or reproduction is disclosed. The signal conversion system may be particularly suitable for use in a battery operated consumer electronics device.

5. 发明申请

US20150304772A1 CONTROL AND PROTECTION OF LOUDSPEAKERS 有权
标题翻译：控制和保护扬声器
公开(公告)号：US20150304772A1
公开(公告)日：2015-10-22
申请号：US14430707
申请日：2013-09-24
申请人： ACTIWAVE AB
发明人： Pär Gunnars Risberg , Erik Lindahl , Marcus Arvidsson , Daniel Karlsson , Landy Toth
IPC分类号： H04R3/00
CPC分类号： H04R3/007 , H04R3/002
摘要： A nonlinear control system and a loudspeaker protection system. In particular, a nonlinear control system including a controller, an audio system, and a model is disclosed. The controller is configured to accept one or more input signals, and one or more estimated states produced by the model to produce one or more control signals. The audio system includes one or more transducers configured to accept the control signals to produce a rendered audio stream therefrom. An active loudspeaker with an integrated amplifier is disclosed. A loudspeaker protection system and a quality control system are disclosed. More particularly, a system for clamping the input to a loudspeaker dependent upon a bank of representative models is disclosed.
摘要翻译：非线性控制系统和扬声器保护系统。特别地，公开了包括控制器，音频系统和模型的非线性控制系统。控制器被配置为接受一个或多个输入信号，以及由模型产生的一个或多个估计状态以产生一个或多个控制信号。音频系统包括一个或多个换能器，其被配置为接受控制信号以从其产生呈现的音频流。公开了一种具有集成放大器的有源扬声器。公开了扬声器保护系统和质量控制系统。更具体地，公开了一种用于将输入钳位到依赖于一组代表性模型的扬声器的系统。

6. 发明授权

US09525425B2 Asynchronous sample rate converter 有权
公开(公告)号：US09525425B2
公开(公告)日：2016-12-20
申请号：US14854459
申请日：2015-09-15
申请人： Actiwave AB
发明人： Erik Lindahl , Pär Gunnars Risberg
IPC分类号： H03M7/00 , H03L7/23 , H03H17/06 , H03M3/00
CPC分类号： H03L7/23 , H03H17/0614 , H03H17/0628 , H03M3/436
摘要： An asynchronous sample rate converter and method for converting an input signal to a resampled output signal is disclosed. An efficient and cost-effective sample rate converter for converting an input signal of arbitrary sample rate to a resampled output signal of a second sample rate is disclosed. A hardware-efficient sample-rate converter for resampling an audio input signal with an arbitrary sample rate to an output audio signal with a known sample rate for use in an audio processor is disclosed.

7. 发明授权

US09503070B2 Signal conversion system and method 有权
公开(公告)号：US09503070B2
公开(公告)日：2016-11-22
申请号：US14920089
申请日：2015-10-22
申请人： Actiwave AB
发明人： Erik Lindahl , Pär Gunnars Risberg
IPC分类号： H03K7/08 , H03K9/08 , H03M3/00 , H04L25/49 , H03M5/08
CPC分类号： H03K7/08 , H03K9/08 , H03M3/506 , H03M5/08 , H04L25/4902
摘要： A signal conversion system and method for converting an input signal to a pulse width modulated signal is disclosed. The signal conversion system includes a sample rate converter coupled with an associated pulse width modulation (PWM) module. A hardware and power efficient signal conversion system for resampling an audio input signal with an arbitrary sample rate to a pulse width modulated output audio signal for use in an audio processor and/or reproduction is disclosed. The signal conversion system may be particularly suitable for use in a battery operated consumer electronics device.

8. 发明申请

US20160006445A1 ASYNCHRONOUS SAMPLE RATE CONVERTER 有权
标题翻译：异步采样率转换器
公开(公告)号：US20160006445A1
公开(公告)日：2016-01-07
申请号：US14854459
申请日：2015-09-15
申请人： Actiwave AB
发明人： Erik Lindahl , Pär Gunnars Risberg
IPC分类号： H03L7/23 , H03M3/00
CPC分类号： H03L7/23 , H03H17/0614 , H03H17/0628 , H03M3/436
摘要： An asynchronous sample rate converter and method for converting an input signal to a resampled output signal is disclosed. An efficient and cost-effective sample rate converter for converting an input signal of arbitrary sample rate to a resampled output signal of a second sample rate is disclosed. A hardware-efficient sample-rate converter for resampling an audio input signal with an arbitrary sample rate to an output audio signal with a known sample rate for use in an audio processor is disclosed.
摘要翻译：公开了一种用于将输入信号转换为重采样输出信号的异步采样率转换器和方法。公开了一种用于将任意采样率的输入信号转换为第二采样率的再采样输出信号的有效且具有成本效益的采样率转换器。公开了一种用于将具有任意采样率的音频输入信号重新采样到具有用于音频处理器的已知采样率的输出音频信号的硬件效率采样率转换器。

9. 发明申请

US20150015426A1 SIGNAL CONVERSION SYSTEM AND METHOD 有权
标题翻译：信号转换系统和方法
公开(公告)号：US20150015426A1
公开(公告)日：2015-01-15
申请号：US14382979
申请日：2013-03-06
申请人： Actiwave AB
发明人： Erik Lindahl , Pär Gunnars Risberg
IPC分类号： H03M5/08
CPC分类号： H03K7/08 , H03K9/08 , H03M3/506 , H03M5/08 , H04L25/4902
摘要： A signal conversion system and method for converting an input signal to a pulse width modulated signal is disclosed. The signal conversion system includes a sample rate converter coupled with an associated pulse width modulation (PWM) module. A hardware and power efficient signal conversion system for resampling an audio input signal with an arbitrary sample rate to a pulse width modulated output audio signal for use in an audio processor and/or reproduction is disclosed. The signal conversion system may be particularly suitable for use in a battery operated consumer electronics device.
摘要翻译：公开了一种用于将输入信号转换为脉宽调制信号的信号转换系统和方法。信号转换系统包括与相关联的脉宽调制（PWM）模块耦合的采样率转换器。公开了一种硬件和功率有效的信号转换系统，用于将具有任意采样率的音频输入信号重新采样到用于音频处理器和/或再现的脉宽调制输出音频信号。信号转换系统可能特别适用于电池供电的消费电子设备。

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