Abstract
The article describes an algorithm for processing an audio signal in Matlab CAD, presents the results of filtering it using digital and analog filters and their comparison by specified characteristics. Practical significance of the work: studying the signal processing algorithm, writing digital filter code in Matlab and gaining skills in using Micro-Cap 12 CAD for modeling passive and active filters. This work can be used to teach students of technical universities in the study of software and principles of operation of analog and digital filters, for use as a methodological guide when performing calculations in homework or laboratory work using specialized software Matlab and Micro-Cap 12. An active low-pass filter is implemented and used as a stand for practical classes at the university.
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