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1. 发明申请

US20130266158A1 CLASS-D AMPLIFIER WITH PULSE DENSITY MODULATION OUTPUT FEEDBACK FOR HIGHER PERFORMANCE ACOUSTIC ECHO CANCELLER 有权
标题翻译：具有脉冲密度调制输出反馈的高分辨率放大器用于更高性能的声学ECHO CANCELLER
公开(公告)号：US20130266158A1
公开(公告)日：2013-10-10
申请号：US13860477
申请日：2013-04-10
申请人： Mouna Elkhatib , Trausti Thormundsson , Jonathan Chien , Yair Kerner
发明人： Mouna Elkhatib , Trausti Thormundsson , Jonathan Chien , Yair Kerner
IPC分类号： H04R3/12
CPC分类号： H04R3/12 , H03F3/2175 , H04R3/02 , H04R2499/15
摘要： A system for processing audio data comprising an amplifier configured to receive an audio signal and to perform nonlinear processing on the audio signal. An encoder coupled to the amplifier, the encoder configured to receive the nonlinearly processed audio signal and to encode the nonlinearly processed audio signal into a data transmission format. A transmitter configured to receive and transmit the encoded nonlinearly processed audio signal. A receiver configured to receive the transmitted encoded nonlinearly processed audio signal and to decode the encoded nonlinearly processed audio signal. A digital voice processor configured to receive the nonlinearly processed audio signal and to use the nonlinearly processed audio signal for echo estimation and to subsequently subtract the estimated echo signal from a microphone signal.
摘要翻译：一种用于处理音频数据的系统，包括被配置为接收音频信号并对音频信号执行非线性处理的放大器。耦合到放大器的编码器，编码器被配置为接收非线性处理的音频信号并且将非线性处理的音频信号编码为数据传输格式。发射器，被配置为接收和发送经编码的非线性处理的音频信号。接收器，被配置为接收所发送的经编码的非线性处理的音频信号并解码编码的非线性处理的音频信号。一种数字语音处理器，被配置为接收非线性处理的音频信号，并使用非线性处理的音频信号进行回波估计，并随后从麦克风信号中减去估计的回波信号。

2. 发明申请

US20110085668A1 2.1 Crossover Equalization in PC Audio Applications 有权
标题翻译： 2.1 PC音频应用中的交叉均衡
公开(公告)号：US20110085668A1
公开(公告)日：2011-04-14
申请号：US12579200
申请日：2009-10-14
申请人： Christian Larsen , Mouna Elkhatib , James W Wihardja , Jonathan Chien
发明人： Christian Larsen , Mouna Elkhatib , James W Wihardja , Jonathan Chien
IPC分类号： H04R5/00 , G06F17/00
CPC分类号： H04R3/14
摘要： Challenges to the implementation of equalization in the 2.1 environment arise from the constraints imposed by HD audio requirements and Windows® Vista™. A hybrid software hardware solution overcomes many of the challenges by exploiting the software capability for equalization and using a hardware codec to perform the separation into high frequency and low frequency audio streams needed to drive stereo speakers and a subwoofer.
摘要翻译：在2.1环境中实现均衡的挑战来自于HD音频要求和Windows®Vista™的限制。混合软件硬件解决方案通过利用软件功能进行均衡和使用硬件编解码器来执行分离到驱动立体声扬声器和低音炮所需的高频和低频音频流中，克服了许多挑战。

3. 发明授权

US08477949B2 2.1 crossover equalization in PC audio applications 有权
标题翻译： 2.1 PC音频应用中的交叉均衡
公开(公告)号：US08477949B2
公开(公告)日：2013-07-02
申请号：US12579200
申请日：2009-10-14
申请人： Christian Larsen , Mouna Elkhatib , James W Wihardja , Jonathan Chien
发明人： Christian Larsen , Mouna Elkhatib , James W Wihardja , Jonathan Chien
IPC分类号： H04R5/00
CPC分类号： H04R3/14
摘要： Challenges to the implementation of equalization in the 2.1 environment arise from the constraints imposed by HD audio requirements and Windows® Vista™. A hybrid software hardware solution overcomes many of the challenges by exploiting the software capability for equalization and using a hardware codec to perform the separation into high frequency and low frequency audio streams needed to drive stereo speakers and a subwoofer.
摘要翻译： 2.1环境中实现均衡的挑战来自HD音频要求和Windows®Vista（TM）的限制。混合软件硬件解决方案通过利用软件功能进行均衡和使用硬件编解码器来执行分离到驱动立体声扬声器和低音炮所需的高频和低频音频流中，克服了许多挑战。

4. 发明授权

US08605912B2 Biphase mark code decoder and method of operation 有权
标题翻译：双相标记码解码器及操作方法
公开(公告)号：US08605912B2
公开(公告)日：2013-12-10
申请号：US13092743
申请日：2011-04-22
申请人： Mouna Elkhatib , Jimmy Pu
发明人： Mouna Elkhatib , Jimmy Pu
IPC分类号： H04R5/00 , H04L7/00
CPC分类号： H04L7/0331
摘要： Biphase mark codes (BMC) are used in digital communications. Most BMC formats use preambles for rate determination and synchronization. A decoder compares the intervals of continuous high or continuous low voltages in a BMC stream to predetermined minimum and maximum values of half cell, full cell and one-and-a-half cell intervals for all supported sampling rates. If a pattern matching a preamble is found, the sampling rate is locked in and the decoder is synchronized to the BMC stream. Once locked, the decoder uses the predetermined minimum and maximum values at the locked rate to generate half cell, full cell and one-and-a-half cell indicators for a decoding state machine which decodes data in the BMC stream or decodes expected preambles.
摘要翻译：双相标记码（BMC）用于数字通信。大多数BMC格式使用前导码进行速率确定和同步。解码器将BMC流中的连续高电平或连续低电压的间隔与所有支持的采样率的半电池，全电池和一个半电池间隔的预定最小值和最大值进行比较。如果找到匹配前同步码的模式，则采样率被锁定，解码器与BMC流同步。一旦锁定，解码器以锁定速率使用预定的最小值和最大值来产生用于解码BMC流中的数据或解码预期的前导码的解码状态机的半小区，全小区和一个一个小区指示符。

5. 发明授权

US08411877B2 Tuning and DAC selection of high-pass filters for audio codecs 有权
标题翻译：调谐和DAC选择音频编解码器的高通滤波器
公开(公告)号：US08411877B2
公开(公告)日：2013-04-02
申请号：US12578477
申请日：2009-10-13
申请人： Christian Larsen , Lorenzo Crespi , Mouna Elkhatib
发明人： Christian Larsen , Lorenzo Crespi , Mouna Elkhatib
IPC分类号： H03G5/00 , H03G9/00
CPC分类号： H03G5/005
摘要： An integrated audio codec includes a high-pass filter to prevent damage to personal computer speakers and other components. The audio codec may be compliant with HD audio standards and can operate with generic software drivers. Tuning of the high-pass filter is provided through an external pin-out where either an external capacitor or external resistors provide an ability to tune the high-pass filter. In one implementation, a tuning voltage is digitized into a tuning code used by a digital high-pass filter. In addition, multiplexers can be used to insure only the audio path leading to the speakers is filtered.
摘要翻译：集成音频编解码器包括高通滤波器，以防止损坏个人计算机扬声器和其他组件。音频编解码器可以符合HD音频标准，并且可以与通用软件驱动程序一起操作。通过外部引脚提供高通滤波器的调谐，其中外部电容器或外部电阻器提供调谐高通滤波器的能力。在一个实现中，调谐电压被数字化为由数字高通滤波器使用的调谐码。此外，多路复用器可以用于确保仅通过扬声器的音频路径被过滤。

6. 发明授权

US08325940B2 Power management controller for drivers 有权
标题翻译：驱动程序电源管理控制器
公开(公告)号：US08325940B2
公开(公告)日：2012-12-04
申请号：US12339635
申请日：2008-12-19
申请人： Christian Larsen , Lorenzo Crespi , Mouna Elkhatib , Mary X. Lu , James Bunde Viliadsen Skov
发明人： Christian Larsen , Lorenzo Crespi , Mouna Elkhatib , Mary X. Lu , James Bunde Viliadsen Skov
IPC分类号： H04B15/00
CPC分类号： H04R3/00 , H03F1/305 , H03F3/187 , H03F2200/03 , H03F2200/249 , H03F2200/414 , H03G3/348
摘要： A driver controller comprising a state machine for controlling transitions between a plurality of states. An output switch for providing a low impedance path to ground during transition periods. An output stage for decoupling output signal from driver amplifier during the transition periods.
摘要翻译：一种驱动器控制器，包括用于控制多个状态之间的转换的状态机。输出开关，用于在过渡期间提供低阻抗地线路径。用于在过渡期间将输出信号与驱动放大器去耦的输出级。

7. 发明申请

US20110261969A1 BIPHASE MARK CODE DECODER AND METHOD OF OPERATION 有权
标题翻译： BIPHASE MARK CODE DECODER和操作方法
公开(公告)号：US20110261969A1
公开(公告)日：2011-10-27
申请号：US13092743
申请日：2011-04-22
申请人： Mouna Elkhatib , Jimmy Pu
发明人： Mouna Elkhatib , Jimmy Pu
IPC分类号： H04L7/00 , H04R5/00
CPC分类号： H04L7/0331
摘要： Biphase mark codes (BMC) are used in digital communications. Most BMC formats use preambles for rate determination and synchronization. A decoder compares the intervals of continuous high or continuous low voltages in a BMC stream to predetermined minimum and maximum values of half cell, full cell and one-and-a-half cell intervals for all supported sampling rates. If a pattern matching a preamble is found, the sampling rate is locked in and the decoder is synchronized to the BMC stream. Once locked, the decoder uses the predetermined minimum and maximum values at the locked rate to generate half cell, full cell and one-and-a-half cell indicators for a decoding state machine which decodes data in the BMC stream or decodes expected preambles.
摘要翻译：双相标记码（BMC）用于数字通信。大多数BMC格式使用前导码进行速率确定和同步。解码器将BMC流中的连续高电平或连续低电压的间隔与所有支持的采样率的半电池，全电池和一个半电池间隔的预定最小值和最大值进行比较。如果找到匹配前同步码的模式，则采样率被锁定，解码器与BMC流同步。一旦锁定，解码器以锁定速率使用预定的最小值和最大值来产生用于解码BMC流中的数据或解码预期的前导码的解码状态机的半小区，全小区和一个一个小区指示符。

8. 发明申请

US20110087346A1 Tuning and DAC Selection of High-Pass Filters for Audio Codecs 有权
标题翻译：调谐和DAC选择音频编解码器的高通滤波器
公开(公告)号：US20110087346A1
公开(公告)日：2011-04-14
申请号：US12578477
申请日：2009-10-13
申请人： Christian Larsen , Lorenzo Crespi , Mouna Elkhatib
发明人： Christian Larsen , Lorenzo Crespi , Mouna Elkhatib
IPC分类号： G06F17/00
CPC分类号： H03G5/005
摘要： An integrated audio codec includes a high-pass filter to prevent damage to personal computer speakers and other components. The audio codec may be compliant with HD audio standards and can operate with generic software drivers. Tuning of the high-pass filter is provided through an external pin-out where either an external capacitor or external resistors provide an ability to tune the high-pass filter. In one implementation, a tuning voltage is digitized into a tuning code used by a digital high-pass filter. In addition, multiplexers can be used to insure only the audio path leading to the speakers is filtered.
摘要翻译：集成音频编解码器包括高通滤波器，以防止损坏个人计算机扬声器和其他组件。音频编解码器可以符合HD音频标准，并且可以与通用软件驱动程序一起操作。通过外部引脚提供高通滤波器的调谐，其中外部电容器或外部电阻器提供调谐高通滤波器的能力。在一个实现中，调谐电压被数字化为由数字高通滤波器使用的调谐码。此外，多路复用器可以用于确保仅通过扬声器的音频路径被过滤。

9. 发明申请

US20100158278A1 Power Management Controller for Drivers 有权
标题翻译：驱动器电源管理控制器
公开(公告)号：US20100158278A1
公开(公告)日：2010-06-24
申请号：US12339635
申请日：2008-12-19
申请人： Christian Larsen , Lorenzo Crespi , Mouna Elkhatib , Mary Xiao-Hua Lu , James Skov
发明人： Christian Larsen , Lorenzo Crespi , Mouna Elkhatib , Mary Xiao-Hua Lu , James Skov
IPC分类号： H03F99/00
CPC分类号： H04R3/00 , H03F1/305 , H03F3/187 , H03F2200/03 , H03F2200/249 , H03F2200/414 , H03G3/348
摘要： A driver controller comprising a state machine for controlling transitions between a plurality of states. An output switch for providing a low impedance path to ground during transition periods. An output stage for decoupling output signal from driver amplifier during the transition periods.
摘要翻译：一种驱动器控制器，包括用于控制多个状态之间的转换的状态机。输出开关，用于在过渡期间提供低阻抗地线路径。用于在过渡期间将输出信号与驱动放大器去耦的输出级。

10. 发明授权

US08682002B2 Systems and methods for transducer calibration and tuning 有权
标题翻译：用于传感器校准和调谐的系统和方法
公开(公告)号：US08682002B2
公开(公告)日：2014-03-25
申请号：US12828565
申请日：2010-07-01
申请人： James Walter Wihardja , Mouna Elkhatib
发明人： James Walter Wihardja , Mouna Elkhatib
IPC分类号： A61F11/06 , H04R29/00 , H03G5/00 , G06F7/00
CPC分类号： H03G5/04 , H03G5/005 , H04R3/007 , H04R5/033 , H04R2420/07 , H04R2420/09
摘要： Audio transducers (headphones, speakers, microphones) inherently do not accurately reproduce the signal presented to them at the input. This can be compensated for by taking into account the transducer characteristics and transforming the input signal using a digital signal processor (DSP) to counteract the inaccuracies. However, for the compensation to take place, the DSP needs to know the characteristics of the transducer. For systems with built-in transducers (like laptops with internal speakers) the characteristics of the internal speakers can be stored on the hard-drive of the laptop and the DSP can read this data and make the appropriate compensations. Because a transducer (headphone, speaker, microphone) has its own characteristics that need to be compensated for separately, a profile is supplied to the DSP either by a database lookup based on an identification made by the user or transducer itself or by profile information stored on the transducer. Once the characteristics of a transducer are known, many additional DSP algorithms can be applied in order to improve the audio performance and even safety of the system.
摘要翻译：音频传感器（耳机，扬声器，麦克风）固有地不准确地再现在输入端呈现给它们的信号。这可以通过考虑换能器特性并使用数字信号处理器（DSP）来变换输入信号来补偿，以抵消不准确性。然而，为了进行补偿，DSP需要知道传感器的特性。对于具有内置传感器（如具有内置扬声器的笔记本电脑）的系统，内部扬声器的特性可以存储在笔记本电脑的硬盘驱动器上，DSP可以读取此数据并进行适当的补偿。因为传感器（耳机，扬声器，麦克风）具有需要单独补偿的自己的特性，所以通过基于由用户或换能器本身做出的标识的数据库查找或通过存储的简档信息将简档提供给DSP 在传感器上。一旦知道传感器的特性，就可以应用许多附加的DSP算法，以便改善系统的音频性能甚至安全性。

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