Drift and Wow Correction of Analogue Magnetic Tape Recordings in the Analogue Domain Using HF-Bias Signals

Wallaszkovits N, Hetzer T, Pichler H. Drift and Wow Correction of Analogue Magnetic Tape Recordings in the Analogue Domain Using HF-Bias Signals. In: AES Convention 136. Audio Engineering Society; 2014. Paper 9042. Available from: https://aes.org/publications/elibrary-page/?id=17189

@inproceedings{Wallaszkovits2014_17189,
  author = {Wallaszkovits, Nadja and Hetzer, Tobias and Pichler, Heinrich},
  title = {{Drift and Wow Correction of Analogue Magnetic Tape Recordings in the Analogue Domain Using HF-Bias Signals}},
  booktitle = {AES Convention 136},
  note = {Paper 9042},
  year = {2014},
  month = apr,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=17189}
}

TY  - CPAPER
TI  - Drift and Wow Correction of Analogue Magnetic Tape Recordings in the Analogue Domain Using HF-Bias Signals
AU  - Wallaszkovits, Nadja
AU  - Hetzer, Tobias
AU  - Pichler, Heinrich
T2  - AES Convention 136
M1  - Paper 9042
PY  - 2014
DA  - 2014/04/06
UR  - https://aes.org/publications/elibrary-page/?id=17189
PB  - Audio Engineering Society
LA  - en
AB  - Based on various existing ideas of using the high frequency (HF) bias signal of analogue magnetic tape recordings as a reference signal for irregular speed deviations, this paper discusses the approach to pre-process the bias signal in the analogue domain in a way that allows control of the playback speed of the replay machine in form of a servo loop. Therefore, the bias signal is captured via a sensor head and specifically preprocessed to match the reference frequency of the capstan motor of the tape machine. The machine is set to external vari-speed control mode and, thus, deviations of the bias signal act as external vari-speed reference, allowing automatic speed correction in real-time. The paper discusses the possibilities, problems and limits of the technical implementation of such a prototype.
ER  -