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    • 8. 发明申请
    • Unified treatment of resolved and unresolved harmonics
    • 解决和未解决的谐波的统一处理
    • US20060009968A1
    • 2006-01-12
    • US11142095
    • 2005-05-31
    • Frank JoublinMartin Heckmann
    • Frank JoublinMartin Heckmann
    • G10L21/00
    • G10L21/0272G10L25/18
    • One embodiment of the present invention provides a post-processing method of a modulation envelope resulting from an interference of two harmonics in a filter band. According to one embodiment, the method comprising filtering the modulation envelope with a band-pass filter bank, wherein a combination of demodulation and application of the band-pass filter on the modulation envelope enables use of identical techniques for resolved and unresolved harmonics. One embodiment of the present invention provides a method of determining whether a frequency band of an input signal includes unresolved harmonics. According to a further embodiment, in response to a determination that the frequency band includes unresolved harmonics, the method comprises obtaining a modulation envelope of the frequency band by demodulating the frequency band, obtaining one or more frequency bands from the modulation envelope, and determining an evidence value that one of the frequency bands originates from one of fundamental frequencies.
    • 本发明的一个实施例提供了由滤波器带中的两个谐波的干扰导致的调制包络的后处理方法。 根据一个实施例,该方法包括用带通滤波器组对调制包络进行滤波,其中调制包络上的带通滤波器的解调和应用的组合使得能够使用相同的技术来解决和未解决的谐波。 本发明的一个实施例提供一种确定输入信号的频带是否包括未解决的谐波的方法。 根据另一实施例,响应于确定频带包括未解决的谐波,该方法包括通过解调频带来获得频带的调制包络,从调制包络获得一个或多个频带,并且确定 其中一个频带来自基频之一的证据值。
    • 9. 发明授权
    • Unified treatment of resolved and unresolved harmonics
    • 解决和未解决的谐波的统一处理
    • US08185382B2
    • 2012-05-22
    • US11142095
    • 2005-05-31
    • Frank JoublinMartin Heckmann
    • Frank JoublinMartin Heckmann
    • G10L19/14G10L11/04G10L19/00
    • G10L21/0272G10L25/18
    • One embodiment of the present invention provides a post-processing method of a modulation envelope resulting from an interference of two harmonics in a filter band. According to one embodiment, the method comprising filtering the modulation envelope with a band-pass filter bank, wherein a combination of demodulation and application of the band-pass filter on the modulation envelope enables use of identical techniques for resolved and unresolved harmonics.One embodiment of the present invention provides a method of determining whether a frequency band of an input signal includes unresolved harmonics. According to a further embodiment, in response to a determination that the frequency band includes unresolved harmonics, the method comprises obtaining a modulation envelope of the frequency band by demodulating the frequency band, obtaining one or more frequency bands from the modulation envelope, and determining an evidence value that one of the frequency bands originates from one of fundamental frequencies.
    • 本发明的一个实施例提供了由滤波器带中的两个谐波的干扰导致的调制包络的后处理方法。 根据一个实施例,该方法包括用带通滤波器组对调制包络进行滤波,其中调制包络上的带通滤波器的解调和应用的组合使得能够使用相同的技术来解决和未解决的谐波。 本发明的一个实施例提供一种确定输入信号的频带是否包括未解决的谐波的方法。 根据另一实施例,响应于确定频带包括未解决的谐波,该方法包括通过解调频带来获得频带的调制包络,从调制包络获得一个或多个频带,并且确定 其中一个频带来自基频之一的证据值。
    • 10. 发明授权
    • Determination of a common fundamental frequency of harmonic signals
    • 确定谐波信号的共同基频
    • US08108164B2
    • 2012-01-31
    • US11340918
    • 2006-01-26
    • Frank JoublinMartin Heckmann
    • Frank JoublinMartin Heckmann
    • G01R23/00
    • G10L25/90
    • Techniques are provided for determining the time course of the fundamental frequency of harmonic signals, wherein the input signal is split into different frequency channels by band pass filters. Distances between crossings of different orders are determined, and a histogram of all these distance values for each instant in time is calculated. The distance values build a peak at the distance corresponding to the fundamental frequency. An example application of this technique is separation of acoustic sound sources in monaural recordings based on their underlying fundamental frequency. Application of these techniques, however, is not limited to the field of acoustics. These techniques can also be applied to other signals such as those originating from pressure sensors.
    • 提供了用于确定谐波信号的基频的时间过程的技术,其中通过带通滤波器将输入信号分成不同的频率信道。 确定不同订单的交叉点之间的距离,并计算每个时刻的所有这些距离值的直方图。 距离值在与基频对应的距离处建立峰值。 该技术的一个示例应用是基于其基础频率在单声道录音中分离声学声源。 然而,这些技术的应用不限于声学领域。 这些技术也可以应用于诸如来自压力传感器的那些信号。