公开(公告)号：EP3281196A1

公开(公告)日：2018-02-14

申请号：EP16709072.9

申请日：2016-03-10

申请人： Thomson Licensing

发明人： BILEN, Cagdas ,  OZEROV, Alexey ,  PEREZ, Patrick

IPC分类号： G10L19/008 ,  G10L21/0272 ,  H03M1/12

CPC分类号： G10L19/008 ,  G10L19/02 ,  G10L19/032 ,  G10L21/0272 ,  H03M1/128

摘要： A method for encoding multiple audio signals comprises random sampling and quantizing each of the multiple audio signals, and encoding the sampled and quantized multiple audio signals as side information that can be used for decoding and separating the multiple audio signals from a mixture of said multiple audio signals. A method for decoding a mixture of multiple audio signals comprises decoding and demultiplexing side information, the side information comprising quantized samples of each of the multiple audio signals, receiving or retrieving from any data source a mixture of said multiple audio signals, and generating multiple estimated audio signals that approximate said multiple audio signals, wherein said quantized samples of each of the multiple audio signals are used.

公开(公告)号：EP3180861A1

公开(公告)日：2017-06-21

申请号：EP15741627.2

申请日：2015-06-11

申请人： Raytheon Company

发明人： FLANDERS, Bradley ,  ROBINSON, Ian S.

IPC分类号： H03M1/12 ,  G01R23/16

CPC分类号： H03M1/128 ,  G01R23/16 ,  H03M1/1265 ,  H04B1/16

摘要： A method includes generating a sampling signal having a non-uniform sampling interval and sampling a received signal with an analog-to-digital converter (ADC) using the sampling signal. The method also includes mapping the sampled received signal onto a frequency grid of sinusoids, where each sinusoid has a signal amplitude and a signal phase. The method further includes estimating the signal amplitude and the signal phase for each sinusoid in the frequency grid. In addition, the method includes computing an average background power level and detecting signals with power higher than the average background power level. The non-uniform sampling interval varies predictably.

摘要翻译： 一种方法包括：生成具有非均匀采样间隔的采样信号;以及使用采样信号，利用模数转换器（ADC）对接收到的信号进行采样。 该方法还包括将采样的接收信号映射到正弦曲线的频率网格上，其中每个正弦曲线具有信号幅度和信号相位。 该方法还包括估计频率网格中每个正弦曲线的信号幅度和信号相位。 另外，该方法包括计算平均背景功率电平并检测功率高于平均背景功率电平的信号。 非均匀采样间隔可预测地变化。

公开(公告)号：EP1746427A1

公开(公告)日：2007-01-24

申请号：EP05015952.4

申请日：2005-07-22

申请人： Institute of Electronics and Computer Science of Latvian University

发明人： Bilinskis, Ivars ,  Artjuhs, Jurijs ,  Ribakovs, Aleksandrs

IPC分类号： G01R23/16

CPC分类号： H03M1/128 ,  G01R23/16

摘要： A method and apparatus for digital spectral estimations of wideband analog signals in a frequency range not limited by the mean sampling frequency is disclosed. To widen the frequency range by elimination of aliasing while sampling an analog input signal at mean frequency considerably lower than the upper signal frequency, signal sample values are taken non-uniformly at pseudorandom time instants. To reduce the estimation cross-interference errors due to the non-uniformities of the sample value taking process, the obtained sample values are subdivided into a number of periodic phase-shifted pseudo-randomly decimated sample value sub-streams. A special signal processor, adapted to the specific non-uniformities of the particular sample value sub-stream, is used for performing spectral estimations by processing each of these sub-streams. As these sample value sub-streams are basically periodic with some sample values pseudo-randomly skipped, well-defined aliasing takes place at this stage. However, the aliasing conditions for processing each of the sample value pseudorandom sub-sequence are different due to variant phase-shifts of the respective periodic pseudo-randomly decimated sampling processes. Aggregating of processing results from all processors provides spectral estimates not corrupted by aliasing and errors due to the sampling non-uniformities.

摘要翻译： 公开了在不受平均采样频率限制的频率范围内的宽带模拟信号的数字频谱估计的方法和装置。 通过消除混叠来扩展频率范围，同时以比上一个信号频率低的平均频率对模拟输入信号进行采样，信号样本值在伪随机时刻不均匀。 为了减少由于采样值取样处理的不均匀性引起的估计交叉干扰误差，将获得的采样值细分为多个周期性相移伪随机抽取样本值子流。 适用于特定样本值子流的特定不均匀性的特殊信号处理器用于通过处理这些子流中的每一个来执行频谱估计。 由于这些样本值子流基本上是周期性的，其中一些样本值被伪随机跳过，所以在此阶段进行了明确的混叠。 然而，由于相应的周期性伪随机抽取抽样过程的变化相移，用于处理每个样本值伪随机子序列的混叠条件是不同的。 来自所有处理器的处理结果的聚合提供了由于采样不均匀性而导致的混叠和误差不会损坏的频谱估计。

公开(公告)号：EP1330036B1

公开(公告)日：2006-06-28

申请号：EP02001249.8

申请日：2002-01-17

申请人： Institute of Electronics and Computer Science of Latvia

发明人： Artjuhs, Juris ,  Bilinskis, Ivars

IPC分类号： H03M1/12

CPC分类号： H03M1/128

公开(公告)号：EP1746427B1

公开(公告)日：2008-01-09

申请号：EP05015952.4

申请日：2005-07-22

申请人： Institute of Electronics and Computer Science of Latvian University

发明人： Bilinskis, Ivars ,  Artjuhs, Jurijs ,  Ribakovs, Aleksandrs

IPC分类号： G01R23/16

CPC分类号： H03M1/128 ,  G01R23/16

公开(公告)号：EP1701459A1

公开(公告)日：2006-09-13

申请号：EP05005084.8

申请日：2005-03-09

申请人： Institute of Electronics and Computer Science of Latvian University

发明人： Artjuhs, Jurijs ,  Bilinskis, Ivars ,  Min, Mart ,  Strautmanis, Gundars

IPC分类号： H04J3/04 ,  H03M1/12

CPC分类号： H03M1/1205 ,  H03M1/128

摘要： The method is used for digitizing of multiple analog signals and buffering or transmitting of digital replicas of such signals. The method comprises the conditioning of the analog signals and a digitizing of the conditioned analog signals. The digitizing comprises steps of generating of a periodic reference signal, generating of pulses at instants when each input signal crosses the reference signal in one direction, time division multiplexing of set pulses, sampling of the reference signal at sampling instants defined by the multiplexed pulses and quantizing of the obtained samples. After the digitizing the quantized samples are buffered or transmitted in a digital form.

摘要翻译： 该方法用于数字化多个模拟信号，并缓存或发送这些信号的数字副本。 该方法包括对模拟信号的调节和经调节的模拟信号的数字化。 数字化包括产生周期性参考信号的步骤，当每个输入信号在一个方向上跨越参考信号时产生脉冲，设定脉冲的时分多路复用，由复用脉冲定义的采样时刻的参考信号的采样;以及 量化所获得的样品。 数字化后，量化样本以数字形式进行缓冲或传输。

公开(公告)号：EP1330036A1

公开(公告)日：2003-07-23

申请号：EP02001249.8

申请日：2002-01-17

申请人： Institute of Electronics and Computer Science of Latvia

发明人： Artjuhs, Juris ,  Bilinskis, Ivars

IPC分类号： H03M1/12

CPC分类号： H03M1/128

摘要： A method and apparatus for alias suppressed digitizing of high frequency analog signals, comprising sampling of the analog signals at mean frequencies considerably lower than the upper frequencies in spectra of said signals, is disclosed. A clock produces a sequence of electrical pulses at a predetermined frequency F clk . This sequence is divided by a pseudo-random integer A to select one pulse from every series of A clock pulses. A digitally controllable delay block delays the selected pulse by a pseudo-random value DxB, where D is a constant increment of the delay and B is a pseudo-random integer. An analog-to-digital (A/D) converter samples the input signal at the time instant of the said delayed pulse. A memory receives and stores the digital sample value from the output of the A/D converter. Said integers A and B are changed after every sampling event.

摘要翻译： 公开了一种用于别名抑制数字化高频模拟信号的方法和装置，包括以比所述信号的频谱中的较高频率显着地低的平均频率对模拟信号进行采样。 时钟以预定频率Fclk产生一系列电脉冲。 该序列由伪随机整数A除以从A个时钟脉冲的每个系列中选择一个脉冲。 数字可控延迟块通过伪随机值DxB延迟所选择的脉冲，其中D是延迟的常数增量，B是伪随机整数。 模数（A / D）转换器在所述延迟脉冲的时刻对输入信号进行采样。 存储器从A / D转换器的输出接收并存储数字采样值。 所有整数A和B在每次采样事件之后都被改变。