A workflow and digital filters for correcting speed and equalisation errors on digitised audio open-reel magnetic tapes - Supplementary Material
Creators: name: Pretto, Niccolò
name: Dalla Pozza, Nadir
name: Padoan, Alberto
name: Chmiel, Anthony
name: Werner, Kurt James
name: Micalizzi, Alessandra
name: Schubert, Emery
name: Rodà, Antonio
name: Milani, Simone
name: Canazza, Sergio
Publisher: name: Zenodo
Year: 2022
Subjects: analogue recordings
open-reel tapes
equalisations
correction filters
MUSHRA

description: This repository makes available the supplementary material related to the paper: Niccolò Pretto, Nadir Dalla Pozza, Alberto Padoan, Anthony Chmiel, Kurt James Werner, Alessandra Micalizzi, Emery Schubert, Antonio Rodà, Simone Milani and Sergio Canazza<em>, A workflow and digital filters for compensating speed and equalisation errors on digitised audio open-reel magnetic tapes, </em>Journal of the Audio Engineering Society, Special Issue on Audio Filter Design, 2022. In the root folder, there is the <em>Cases Reference Table</em>, which defines the equalisation curves and speeds for each possible case, considering the possibilities given by the Studer A810. The materials are then grouped in three directories (<strong>bold</strong> represents folder names): <strong>A Posteriori Analysis</strong>: tables and data related to the <em>a posteriori</em> analysis discussed in Sections 5 and 6 of the paper; <strong>Images</strong>: a series of plots related to the (1) <strong>Equalisation Curves</strong> examined in the paper and the (2) <strong>Power Spectral Densities</strong> of the samples produced for the experiment; <strong>Impulse Responses</strong>: the impulse responses of the filters used in the experiment, stored in WAV format. Also, directory <strong>Images / Power Spectral Densities</strong> contains the following subdirectories: <strong>Experiment Samples</strong>: the plots related to the 10 seconds long samples used in the experiment. There are two other subdirectories, (1) <strong>A Posteriori Web Audio API Analysis</strong> which contains the plots inspecting the analysis of the ConvolverNode and IIRFilterNode and (2) <strong>A Priori Analysis</strong> which contains the PSDs of the samples used for the experiment. Both subdirectories contains the difference between the curves for each sample, computed as specified in the legend: this is provided to give additional information about the main plots, since they can be congested; <strong>Long Samples</strong>: these plots shows the PSDs for the 6 minutes long samples originally produced (one for each of the identified cases), from which were extracted the experiment samples. The 1 kHz peak is directly related to the sound we inserted before and after each sample, as a marking sign to clearly distinguish them.
description: {"references": ["Niccol\u00f2 Pretto, Nadir Dalla Pozza, Alberto Padoan, Anthony Chmiel, Kurt James Werner, Alessandra Micalizzi, Emery Schubert, Antonio Rod\u00e0, Simone Milani and Sergio Canazza, A workflow and digital filters for compensating speed and equalisation errors on digitised audio open-reel magnetic tapes, Journal of the Audio Engineering Society, Special Issue on Audio Filter Design,\u00a02022."]}