公开(公告)号：US08077893B2

公开(公告)日：2011-12-13

申请号：US12155183

申请日：2008-05-30

申请人： Olivier Roy ,  Martin Vetterli

发明人： Olivier Roy ,  Martin Vetterli

IPC分类号： H04R25/00

CPC分类号： G10L19/008 ,  G10L19/0204 ,  H04R25/552

摘要： The aim of the invention is to provide inter-channel level differences ICLD related to audio signals for hearing aids. This aim is achieved by a method for computing ICLD from a first and second audio source signals, the first source signal being wired with a first processing module and the second source signal being wired with a second processing module, the second processing module receiving wirelessly information from the first processing module, this method comprising the steps of: acquiring first samples of the first sound signal by the first processing module, defining a first time frame, converting the first time frame into first frequency bands and grouping them into two first frequency sub-bands, calculating a first power estimate of each first frequency sub-bands, encoding and transmitting same to the second processing module, acquiring second samples of the second sound signal by the second processing module,defining a second time frame comprising acquired samples, converting same into second frequency bands, grouping them into two second frequency sub-bands,calculating a second power estimate of each second frequency sub-bands, receiving and decoding the encoded first power estimates, computing for each frequency sub-band, an ICLD by subtracting the first decoded power estimates and the second power estimates.

摘要翻译： 本发明的目的是提供与助听器的音频信号相关的信道间水平差ICLD。 该目的通过一种用于从第一和第二音频源信号计算ICLD的方法来实现，第一源信号与第一处理模块连接，第二源信号与第二处理模块连线，第二处理模块接收无线信息 该方法包括以下步骤：由第一处理模块获取第一声音信号的第一采样，定义第一时间帧，将第一时间帧转换为第一频带并将其分组为两个第一频率子步骤 计算每个第一频率子带的第一功率估计，将其编码并发送到第二处理模块，由第二处理模块获取第二声音信号的第二采样，定义包括获取样本的第二时间帧，转换 相同的第二频带，将它们分组成两个第二频率子带，计算第二功率估计 每个第二频率子带的配对，对所编码的第一功率估计进行接收和解码，通过减去第一解码功率估计和第二功率估计来计算每个频率子带，ICLD。

公开(公告)号：US08077757B2

公开(公告)日：2011-12-13

申请号：US10680839

申请日：2003-10-07

申请人： Irena Maravic ,  Martin Vetterli ,  Julius Kusuma

发明人： Irena Maravic ,  Martin Vetterli ,  Julius Kusuma

IPC分类号： H04B1/00

CPC分类号： H04B1/707 ,  H03M1/1285 ,  H03M1/66 ,  H04B2201/70707

摘要： Method for decoding a signal sent over a bandwidth-expanding communication system, where both channel estimation and signal detection are carried out on a set of samples generated by sampling the received signal at a sub-Nyquist rate, thus allowing for a significant reduction of the complexity of the sampling device of receivers using said method, as well as a significant reduction of their computational requirements.

摘要翻译： 用于对通过带宽扩展通信系统发送的信号进行解码的方法，其中对通过以亚奈奎斯特速率对接收信号进行采样而生成的一组样本执行信道估计和信号检测，从而允许 使用所述方法的接收机的采样装置的复杂性以及它们的计算要求的显着降低。

公开(公告)号：US07991095B2

公开(公告)日：2011-08-02

申请号：US10680833

申请日：2003-10-07

申请人： Martin Vetterli ,  Pina Marziliano ,  Thierry Blu

发明人： Martin Vetterli ,  Pina Marziliano ,  Thierry Blu

IPC分类号： H04L7/00

CPC分类号： H04B1/707 ,  H03M1/1285 ,  H03M1/66 ,  H04B2201/70707

摘要： A reconstruction method for reconstructing a first signal from a set of sampled values generated by sampling a second signal at a sub-Nyquist rate and at uniform intervals, the method includes retrieving from the set of sampled values a set of shifts and weights with which the first signal can be reconstructed.

摘要翻译： 一种重构方法，用于从通过以次奈奎斯特速率和均匀间隔采样第二信号而生成的一组采样值重建第一信号，所述方法包括从所述采样值集中检索一组偏移和权重， 可以重构第一个信号。

公开(公告)号：US20110176019A1

公开(公告)日：2011-07-21

申请号：US12831712

申请日：2010-07-07

申请人： Feng Yang ,  Yue Lu ,  Martin Vetterli

发明人： Feng Yang ,  Yue Lu ,  Martin Vetterli

IPC分类号： H04N5/228 ,  H04N5/225

CPC分类号： H04N5/23229 ,  H04N5/347

摘要： A method for image acquisition and conversion includes low-pass filtering an image by an acquisition lens, producing from the low-pass filtered image, an up-sampled image with a first resolution with an up-sampling factor using a image sensor. The up-sampled image is converted into a multi-level image with a second resolution lower than the first resolution with an image processing circuit. The converting depends on the low-pass filtering of the lens and on the up-sampling factor. The method is adapted to gigapixel sensors and convention image sensors.

摘要翻译： 用于图像获取和转换的方法包括通过采集透镜对图像进行低通滤波，从低通滤波图像产生具有使用图像传感器的上采样因子的具有第一分辨率的上采样图像。 利用图像处理电路将上采样图像转换成具有低于第一分辨率的第二分辨率的多级图像。 转换取决于透镜的低通滤波和上采样因子。 该方法适用于千兆像素传感器和常规图像传感器。

公开(公告)号：US20110146371A1

公开(公告)日：2011-06-23

申请号：US12976462

申请日：2010-12-22

申请人： Olivier Roy ,  Neb Duric ,  Ivana Jovanovic ,  Martin Vetterli

发明人： Olivier Roy ,  Neb Duric ,  Ivana Jovanovic ,  Martin Vetterli

IPC分类号： G01P21/00

CPC分类号： A61B8/0825 ,  A61B8/58

摘要： An iterative method for calibrating a transducer array characterized by calibration parameters, based on time delay measurements between transducer pairs, comprising the steps of: creating a distance data set that includes pairwise distances between estimated positions of transducer; forming a time delay measurement data set that includes time delay measurements between transducer pairs; generating from the time delay measurement data set an estimate of at least one calibration parameter; modifying the time delay measurement data set and the distance data set based on the estimated calibration parameters; denoising the modified distance data set with an iterative algorithm; updating the estimated positions of transducers based on the denoised modified distance data set; and repeating at least a portion of the steps until the difference between the estimated positions of transducer pairs and updated estimated positions of transducers satisfies a stopping criterion.

摘要翻译： 一种迭代方法，用于校准基于校准参数的换能器阵列，其基于换能器对之间的时间延迟测量，包括以下步骤：创建包括换能器的估计位置之间成对距离的距离数据集; 形成包括传感器对之间的时间延迟测量的时间延迟测量数据集; 从所述时间延迟测量数据生成至少一个校准参数的估计; 基于估计的校准参数修改时间延迟测量数据集和距离数据集; 用迭代算法对修改的距离数据集进行去噪; 基于去噪修正距离数据集来更新换能器的估计位置; 并且重复步骤的至少一部分，直到换能器对的估计位置和更新的换能器估计位置之间的差满足停止标准。

公开(公告)号：US20090190689A1

公开(公告)日：2009-07-30

申请号：US12139079

申请日：2008-06-13

申请人： Thierry Blu ,  Martin Vetterli ,  Lionel Coulot

发明人： Thierry Blu ,  Martin Vetterli ,  Lionel Coulot

IPC分类号： H04B15/00

CPC分类号： H04L25/03006 ,  G06F17/10 ,  H03M1/0626 ,  H03M1/127 ,  H04B1/71637 ,  H04L27/2647

摘要： Signals, including signals from outside of the subspace of bandlimited signals associated with the Shannon theorem, are acquired while still providing an acceptable reconstruction. In some aspects a denoising process is used in conjunction with sparse sampling techniques. For example, a denoising process utilizing a Cadzow algorithm may be used to reduce the amount of noise associated with sampled information. In some aspects the denoising process may be iterative such that the denoising process is repeated until the samples are denoised to a sufficient degree. In some aspects, the denoising process converts a set of received samples into another set corresponding to a signal with a Finite Rate of Innovation (FRI), or to an approximation of such a signal. The disclosure relates in some aspects to combination of a denoising process with annihilating filter methods to retrieve information from a noisy, sparse sampled signal. The disclosure relates in some aspects to determining a sampling kernel to be used to sample the signal based on noise associated with the signal. The disclosure relates in some aspects to determining the number of samples to obtain from a signal over a period of time based on noise associated with the signal. The disclosure relates in some aspects to determining the finite number of innovations of a received signal.

摘要翻译： 信号包括与香农定理相关联的带限信号的子空间以外的信号，同时仍然提供可接受的重建。 在一些方面，去噪过程与稀疏采样技术结合使用。 例如，可以使用利用Cadzow算法的去噪处理来减少与采样信息相关联的噪声量。 在一些方面，去噪过程可以是迭代的，使得去除去噪过程直到样品被去除去达到足够的程度。 在一些方面，去噪处理将一组接收到的样本转换成对应于具有有限创新速率（FRI）的信号的另一组，或将其转换为近似这样的信号。 本公开在一些方面涉及去噪处理与消除滤波器方法的组合以从噪声稀疏采样信号中检索信息。 本公开在一些方面涉及确定要用于基于与信号相关联的噪声对信号进行采样的采样内核。 本公开在一些方面涉及基于与信号相关联的噪声来确定在一段时间内从信号获得的样本数量。 本公开在一些方面涉及确定接收信号的创新的有限数量。

公开(公告)号：US20070183535A1

公开(公告)日：2007-08-09

申请号：US10680839

申请日：2003-10-07

申请人： Irena Maravic ,  Martin Vetterli ,  Julius Kusuma

发明人： Irena Maravic ,  Martin Vetterli ,  Julius Kusuma

IPC分类号： H04L27/00

CPC分类号： H04B1/707 ,  H03M1/1285 ,  H03M1/66 ,  H04B2201/70707

摘要： Method for decoding a signal sent over a bandwidth-expanding communication system, where both channel estimation and signal detection are carried out on a set of samples generated by sampling the received signal at a sub-Nyquist rate, thus allowing for a significant reduction of the complexity of the sampling device of receivers using said method, as well as a significant reduction of their computational requirements.

摘要翻译： 用于对通过带宽扩展通信系统发送的信号进行解码的方法，其中对通过以亚奈奎斯特速率对接收信号进行采样而生成的一组样本执行信道估计和信号检测，从而允许 使用所述方法的接收机的采样装置的复杂性以及它们的计算要求的显着降低。