|Audio Tape Digitisation Workflow
The replay machine has to be regularly maintained to avoid quality loss in the transfer process, and to prevent possible damage of the tape due to mechanical misalignment of the equipment. All transfer equipment has to operate within the specifications.
Besides routine cleaning (as described in step 2.3.), the machine has to be degaussed regularly (recommendation: every 8 hours of operation). To avoid signal distortions from magnetised parts, demagnetise heads and tape path by using a degaussing choke.
To avoid possible damage, observe the following points before de-gaussing the machine:
John G. MacKnight: Demagnetizing A Tape Recorder
Ray A. Rayburn: Cleaning and demagnetizing tape recorders and duplicators
The Practitioners Guide - Analog Tape Machine Alignment
Operation manual of Studer tape recorders
Frequency response of a tape recorder aligned within specifications