Search results for "Butterworth filter"

showing 2 items of 2 documents

Introduction: Digital Filters and Filter Banks

2015

A basic operation of spectr is filterin. In this introductory chapter, processing of one- and two-dimensional signals by digital filters and filter banks is outlined. A polyphase implementation of multirate filtering is described. The application of filtering with IIR filters, whose transfer functions are rational, is described. Bases and frames in the signals’ space that are generated by perfect reconstruction filter banks are discussed. The Butterworth filters, which are used in further constructions, are introduced.

Computer scienceElectronic engineeringPolyphase systemButterworth filterFilter (signal processing)Capacitor-input filterFilter bankTransfer functionInfinite impulse responseDigital filter
researchProduct

Calculate Pulse from Touch Error Free PPG Signal with 2ndOrder Butterworth Filter

2021

With the ongoing heart problems of the population worldwide, the medical requirements of the people are expected to increase. Electrocardiogram (ECG) is one of the proven to capture the heart response signal to assess the electrical and muscular functions of the heart. The ECG setup is expensive and needs proper training, and of course, it is not instant. For fast, accurate heart parameter monitoring, scientists pay attention to the photoplethysmogram signal (PPG), based on the light intensity of a particular wavelength. Android smartphone with a good quality camera has come to ordinary people's reach and has become one of the most necessary and rugged devices for today and future generatio…

education.field_of_studyComputer sciencebusiness.industryPopulationButterworth filterFilter (signal processing)SignalWindow functionLight intensitySampling (signal processing)PhotoplethysmogramComputer visionArtificial intelligencebusinesseducation2021 International Conference on Electrical, Computer, Communications and Mechatronics Engineering (ICECCME)
researchProduct