-
公开(公告)号：US20060229868A1
公开(公告)日：2006-10-12
申请号：US10568150
申请日：2004-08-11
IPC分类号： G10L11/04
摘要： The present invention is related to a method for estimating from an input signal the resonance frequencies of a system modelled as a source and a filter, comprising the steps of—determining the Z-transform of the input signal,—calculating the differential-phase spectrum of the Z-transformed input signal, whereby the Z-transform is evaluated on a circle centered around the origin of the Z-plane,—detecting the peaks on said differential-phase spectrum,—attributing the peaks to either the source or the filter,—estimating the resonance frequencies from the peaks.
摘要翻译： 本发明涉及一种用于从输入信号估计建模为源和滤波器的系统的谐振频率的方法，包括以下步骤：确定输入信号的Z变换，计算差分相位频谱 的Z变换输入信号，由此在以Z平面原点为中心的圆上评估Z变换， - 检测所述差分相位光谱上的峰值， - 将峰值分配给源或滤波器 ，从峰值估计谐振频率。
-
公开(公告)号：US07333931B2
公开(公告)日：2008-02-19
申请号：US10568150
申请日：2004-08-11
IPC分类号： G10L11/00
摘要： The present invention is related to a method for estimating from an input signal the resonance frequencies of a system modelled as a source and a filter, comprising the steps of—determining the Z-transform of the input signal,—calculating the differential-phase spectrum of the Z-transformed input signal, whereby the Z-transform is evaluated on a circle centered around the origin of the Z-plane,—detecting the peaks on said differential-phase spectrum,—attributing the peaks to either the source or the filter,—estimating the resonance frequencies from the peaks.
摘要翻译： 本发明涉及一种用于从输入信号估计建模为源和滤波器的系统的谐振频率的方法，包括以下步骤：确定输入信号的Z变换，计算差分相位频谱 的Z变换输入信号，由此在以Z平面原点为中心的圆上评估Z变换， - 检测所述差分相位光谱上的峰值， - 将峰值分配给源或滤波器 ，从峰值估计谐振频率。
-
搜索结果
2 条记录 (耗时 0.016 秒)
