公开(公告)号：US20140323897A1

公开(公告)日：2014-10-30

申请号：US14261166

申请日：2014-04-24

申请人： Emery N. Brown ,  Patrick L. Purdon ,  Demba Ba ,  Behtash Babadi

发明人： Emery N. Brown ,  Patrick L. Purdon ,  Demba Ba ,  Behtash Babadi

IPC分类号： A61B5/00

CPC分类号： A61B5/4821 ,  A61B5/048

摘要： A system and method for monitoring a patient includes a sensor configured to acquire physiological data from a patient and a processor configured to receive the physiological data from the at least one sensor. The processor is also configured to apply a spectral estimation framework that utilizes structured time-frequency representations defined by imposing, to the physiological data, a prior distributions on a time-frequency plane that enforces spectral estimates that are smooth in time and sparse in a frequency domain. The processor is further configured to perform an iteratively re-weighted least squares algorithm to perform yield a denoised time-varying spectral decomposition of the physiological data and generate a report indicating a physiological state of the patient.

摘要翻译： 用于监测患者的系统和方法包括被配置为从患者获取生理数据的传感器和被配置为从所述至少一个传感器接收生理数据的处理器。 处理器还被配置为应用频谱估计框架，其利用结构化时间频率表示，该结构化时间频率表示是通过对生理数据施加在时间 - 频率平面上的先前分布来实施的，其中频谱估计在时间上是平滑的并且在频率上是稀疏的 域。 处理器还被配置为执行迭代重新加权的最小二乘法算法来执行产生生理数据的去噪时变频谱分解并生成指示患者的生理状态的报告。

公开(公告)号：US08098842B2

公开(公告)日：2012-01-17

申请号：US11692920

申请日：2007-03-29

申请人： Dinei Florencio ,  Cha Zhang ,  Demba Ba

发明人： Dinei Florencio ,  Cha Zhang ,  Demba Ba

IPC分类号： H04R3/00

CPC分类号： H04R3/005

摘要： A novel enhanced beamforming technique that improves beamforming operations by incorporating a model for the directional gains of the sensors, such as microphones, and provides means of estimating these gains. The technique forms estimates of the relative magnitude responses of the sensors (e.g., microphones) based on the data received at the array and includes those in the beamforming computations.

摘要翻译： 一种新颖的增强波束形成技术，其通过结合用于诸如麦克风的传感器的定向增益的模型来改进波束成形操作，并且提供估计这些增益的手段。 该技术基于在阵列处接收到的数据并且包括波束成形计算中的数据来形成传感器（例如，麦克风）的相对幅度响应的估计。