Signal processing method and equally-spaced fractional delay filter

• Main Authors: GAO WEIWEI, YANG SUOCHANG, ZHANG ZIBIN, TAO GUIMING, GUO XIWEI, ZHAO SHEN, FANG DAN, WANG HONGYUN
• Format: Patent
• Language: Chinese; English
• Published: 26.11.2019
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS

The invention is applicable to the technical field of digital signal processing, and provides a signal processing method and an equal-interval fractional delay filter. The method comprises: calculating multiple sets of equal-interval fractional delay filter coefficients according to the preset delay amount; adjusting a filter bank according to the calculated multiple groups of equally-spaced fractional delay filter coefficients to obtain an equally-spaced fractional delay filter bank; filtering the obtained to-be-processed signal through the equally-spaced fractional delay filter bank, and obtaining the filtered output signal is obtained. Variable-delay filtering processing can be carried out on the signal, and the problem that a digital fractional delay filter in the prior art cannot meetthe application requirement of variable delay is solved. 本发明适用于数字信号处理技术领域，提供了一种信号处理方法及等间隔分数时延滤波器，该方法包括：根据预设时延量，计算多组等间隔分数时延滤波器系数；根据计算得到的多组等间隔分数时延滤波器系数调节滤波器组，获得等间隔分数时延滤波器组；将获取的待处理信号通过等间隔分数时延滤波器组进行滤波处理，获得滤波后的输出信号，从而可以实现对信号进行可变时