TY - JOUR A2 - Seeling, Patrick AU - Pretto, Niccolò AU - Micheloni, Edoardo AU - Chmiel, Anthony AU - Pozza, Nadir Dalla AU - Marinello, Dario AU - Schubert, Emery AU - Canazza, Sergio PY - 2021 DA - 2021/03/30 TI - Multimedia Archives: New Digital Filters to Correct Equalization Errors on Digitized Audio Tapes SP - 5410218 VL - 2021 AB - Multimedia archives face the problem of obsolescing and degrading analogue media (e.g., speech and music recordings and video art). In response, researchers in the field have recently begun studying ad hoctools for the preservation and access of historical analogue documents. This paper investigates the active preservation process of audio tape recordings, specifically focusing on possible means for compensating equalization errors introduced in the digitization process. If the accuracy of corrective equalization filters is validated, an archivist or musicologist would be able to experience the audio as a historically authentic document such that their listening experience would not require the recovery of the original analogue audio document or the redigitization of the audio. Thus, we conducted a MUSHRA-inspired perception test ( n = 14) containing 6 excerpts of electronic music (3 stimuli recorded NAB and 3 recorded CCIR). Participants listened to 6 different equalization filters for each stimulus and rated them in terms of similarity. Filters included a correctly digitized “Reference,” an intentionally incorrect “Foil” filter, and a subsequent digital correction of the Foil filter that was produced with a MATLAB script. When stimuli were collapsed according to their filter type (NAB or CCIR), no significant differences were observed between the Reference and MATLAB correction filters. As such, the digital correction appears to be a promising method for compensation of equalization errors although future study is recommended, specifically containing an increased sample size and additional correction filters for comparison. SN - 1687-5680 UR - https://doi.org/10.1155/2021/5410218 DO - 10.1155/2021/5410218 JF - Advances in Multimedia PB - Hindawi KW - ER -