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公开(公告)号：US07831001B2
公开(公告)日：2010-11-09
申请号：US11641564
申请日：2006-12-19
IPC分类号： H04L7/00
CPC分类号： G10L19/02
摘要： A digital audio processing system and method is disclosed. In an embodiment, the digital audio processing system can include a phase detector to sample an input signal and provide an output to adjust a decimation rate of an input signal. In another embodiment, the digital audio processing system can include symbol recognition logic to determine a symbol using a difference between a nearest predetermined phase value to a sample and a nearest predetermined phase value to a prior sample.
摘要翻译： 公开了一种数字音频处理系统和方法。 在一个实施例中，数字音频处理系统可以包括相位检测器以对输入信号进行采样并提供输出以调整输入信号的抽取率。 在另一个实施例中，数字音频处理系统可以包括符号识别逻辑，以使用最接近样本的预定相位值与最近的预定相位值之间的差值来确定符号。
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公开(公告)号：US08102959B2
公开(公告)日：2012-01-24
申请号：US13092616
申请日：2011-04-22
IPC分类号： H04L7/00
CPC分类号： G10L19/02
摘要： A digital audio processing system includes an input to receive a phase component of a signal. The digital audio processing system includes symbol recognition logic to adjust a sample of the phase component using an offset value. The symbol recognition logic maps the adjusted sample to a nearest predetermined phase value of a plurality of predetermined phase values. The symbol recognition logic determines a symbol using a difference between the nearest predetermined phase value and a prior nearest predetermined phase value. The prior nearest predetermined phase value corresponds to a prior sample of the phase component of the signal. The offset value is based on a detected error of the prior sample of the phase component of the signal. The digital audio processing system also includes an output to provide a second signal that indicates the symbol.
摘要翻译： 数字音频处理系统包括用于接收信号的相位分量的输入。 数字音频处理系统包括使用偏移值来调整相位分量的采样的符号识别逻辑。 符号识别逻辑将经调整的样本映射到多个预定相位值的最近的预定相位值。 符号识别逻辑使用最近的预定相位值和先前最近的预定相位值之间的差来确定符号。 先前最近的预定相位值对应于信号的相位分量的先前采样。 偏移值基于信号的相位分量的先前样本的检测误差。 数字音频处理系统还包括提供指示符号的第二信号的输出。
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公开(公告)号：US20080147762A1
公开(公告)日：2008-06-19
申请号：US11641564
申请日：2006-12-19
IPC分类号： G06F17/10
CPC分类号： G10L19/02
摘要： A digital audio processing system and method is disclosed. In an embodiment, the digital audio processing system can include a phase detector to sample an input signal and provide an output to adjust a decimation rate of an input signal. In another embodiment, the digital audio processing system can include symbol recognition logic to determine a symbol using a difference between a nearest predetermined phase value to a sample and a nearest predetermined phase value to a prior sample.
摘要翻译： 公开了一种数字音频处理系统和方法。 在一个实施例中，数字音频处理系统可以包括相位检测器以对输入信号进行采样并提供输出以调整输入信号的抽取率。 在另一个实施例中，数字音频处理系统可以包括符号识别逻辑，以使用最接近样本的预定相位值与最近的预定相位值之间的差值来确定符号。
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公开(公告)号：US07953196B2
公开(公告)日：2011-05-31
申请号：US12895170
申请日：2010-09-30
IPC分类号： H04L7/00
CPC分类号： G10L19/02
摘要： A method includes receiving first data corresponding to a first signal sampled at a first sample rate, decimating the first data to provide a second signal sampled at a second sample rate, and recovering a pilot signal from the second signal. The method also includes evaluating the pilot signal to determine an error value, where the error value is based on a comparison of a sample of the pilot signal to zero. The method also includes adjusting the second sample rate based on the error value.
摘要翻译： 一种方法包括接收对应于以第一采样率采样的第一信号的第一数据，抽取第一数据以提供以第二采样率采样的第二信号，以及从第二信号恢复导频信号。 该方法还包括评估导频信号以确定误差值，其中误差值基于导频信号的采样与零的比较。 该方法还包括基于误差值调整第二采样率。
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公开(公告)号：US07792220B2
公开(公告)日：2010-09-07
申请号：US11641995
申请日：2006-12-19
CPC分类号： H04L27/3845 , H04L27/2331
摘要： A demodulator system and method is disclosed. In an embodiment, the demodulator system can include a Coordinate Rotation Digital Computer (CORDIC) mixer to mix a first signal substantially to baseband using a first input frequency and to mix a second signal substantially to baseband using a second input frequency. In another embodiment, the demodulator system can include a phase detector to receive a pilot signal and to generate a control signal to adjust a decimation rate based on the pilot signal. In another embodiment, the demodulator system can include a symbol decoder to determine a symbol from a phase signal.
摘要翻译： 公开了一种解调器系统和方法。 在一个实施例中，解调器系统可以包括坐标旋转数字计算机（CORDIC）混频器，以使用第一输入频率将第一信号基本上与基带混频，并且使用第二输入频率将基本上与基带的第二信号混合。 在另一个实施例中，解调器系统可以包括相位检测器，用于接收导频信号并产生控制信号以根据导频信号来调节抽取率。 在另一个实施例中，解调器系统可以包括符号解码器，以从相位信号确定符号。
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公开(公告)号：US20080144743A1
公开(公告)日：2008-06-19
申请号：US11641995
申请日：2006-12-19
CPC分类号： H04L27/3845 , H04L27/2331
摘要： A demodulator system and method is disclosed. In an embodiment, the demodulator system can include a Coordinate Rotation Digital Computer (CORDIC) mixer to mix a first signal substantially to baseband using a first input frequency and to mix a second signal substantially to baseband using a second input frequency. In another embodiment, the demodulator system can include a phase detector to receive a pilot signal and to generate a control signal to adjust a decimation rate based on the pilot signal. In another embodiment, the demodulator system can include a symbol decoder to determine a symbol from a phase signal.
摘要翻译： 公开了一种解调器系统和方法。 在一个实施例中，解调器系统可以包括坐标旋转数字计算机（CORDIC）混频器，以使用第一输入频率将第一信号基本上与基带混频，并且使用第二输入频率将基本上与基带的第二信号混合。 在另一个实施例中，解调器系统可以包括相位检测器，用于接收导频信号并产生控制信号以根据导频信号来调节抽取率。 在另一个实施例中，解调器系统可以包括符号解码器，以从相位信号确定符号。
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公开(公告)号：US20110194661A1
公开(公告)日：2011-08-11
申请号：US13092616
申请日：2011-04-22
IPC分类号： H04L7/00
CPC分类号： G10L19/02
摘要： A digital audio processing system includes an input to receive a phase component of a signal. The digital audio processing system includes symbol recognition logic to adjust a sample of the phase component using an offset value. The symbol recognition logic maps the adjusted sample to a nearest predetermined phase value of a plurality of predetermined phase values. The symbol recognition logic determines a symbol using a difference between the nearest predetermined phase value and a prior nearest predetermined phase value. The prior nearest predetermined phase value corresponds to a prior sample of the phase component of the signal. The offset value is based on a detected error of the prior sample of the phase component of the signal. The digital audio processing system also includes an output to provide a second signal that indicates the symbol.
摘要翻译： 数字音频处理系统包括用于接收信号的相位分量的输入。 数字音频处理系统包括使用偏移值来调整相位分量的采样的符号识别逻辑。 符号识别逻辑将经调整的样本映射到多个预定相位值的最近的预定相位值。 符号识别逻辑使用最近的预定相位值和先前最近的预定相位值之间的差来确定符号。 先前最近的预定相位值对应于信号的相位分量的先前采样。 偏移值基于信号的相位分量的先前样本的检测误差。 数字音频处理系统还包括提供指示符号的第二信号的输出。
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公开(公告)号：US20110022649A1
公开(公告)日：2011-01-27
申请号：US12895170
申请日：2010-09-30
IPC分类号： G06F17/17
CPC分类号： G10L19/02
摘要： A method includes receiving first data corresponding to a first signal sampled at a first sample rate, decimating the first data to provide a second signal sampled at a second sample rate, and recovering a pilot signal from the second signal. The method also includes evaluating the pilot signal to determine an error value, where the error value is based on a comparison of a sample of the pilot signal to zero. The method also includes adjusting the second sample rate based on the error value.
摘要翻译： 一种方法包括接收对应于以第一采样率采样的第一信号的第一数据，抽取第一数据以提供以第二采样率采样的第二信号，以及从第二信号恢复导频信号。 该方法还包括评估导频信号以确定误差值，其中误差值基于导频信号的采样与零的比较。 该方法还包括基于误差值调整第二采样率。
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