The use of digital filters when working with audio recordings on magnetic tapes

Abstract

The article discusses the experience of using digital filters when working with audio recordings on magnetic tapes. It is noted that digital signal processing is divided into linear and non-linear, but in the case of magnetic tape recordings, we are dealing only with non-linear processing. At the same time, computing tools of any power can be used for nonlinear processing, and the processing time, especially with high quality, can reach several minutes and even hours. The waveforms of the audio signal after various transformations according to the proposed method are graphically illustrated. It is noted that sampling at each recalculation becomes the main method of sound processing of analog recordings.