Pre-correction of Phase-frequency Characteristics of Digital Filters
Year: 2024
Type: article
Abstract: The article is devoted to the synthesis of a digital filter computer model with zero phase-frequency characteristic. A predetermined structural implementation of the digital filter with zero phase-frequency response is based on double filtering of the signal in the forward and reverse directions, as well as on filters with a finite impulse response. This article discusses the implementation of a filter with zero phase-frequency response based on filters with infinite impulse response. The implementation of pre-correction of the phase-frequency response of the filter is achieved due to the use of the two-channel structural diagram with the input signal spectrum transfer. The complexity of using filters with an infinite impulse response is associated with its nonlinearity, which requires pre-correction in order to linearize the phase-frequency response. The article discusses both a mathematical model of signal passage through a block diagram and a computer model in the Matlab-Simulink environment in static and dynamic modes.
Source: Infokommunikacionnye tehnologii
Language: English
Subfield: Signal Processing
Field: Computer Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4405002639