Azimuth and Interchannel Time Displacement Error in Multi-Track Magnetic Tape Recording

McKnight JG. Azimuth and Interchannel Time Displacement Error in Multi-Track Magnetic Tape Recording. In: AES Convention 66. Audio Engineering Society; 1980. Paper 1666. Available from: https://aes.org/publications/elibrary-page/?id=3710

@inproceedings{McKnight1980_3710,
  author = {McKnight, John G.},
  title = {{Azimuth and Interchannel Time Displacement Error in Multi-Track Magnetic Tape Recording}},
  booktitle = {AES Convention 66},
  note = {Paper 1666},
  year = {1980},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=3710}
}

TY  - CPAPER
TI  - Azimuth and Interchannel Time Displacement Error in Multi-Track Magnetic Tape Recording
AU  - McKnight, John G.
T2  - AES Convention 66
M1  - Paper 1666
PY  - 1980
DA  - 1980/05/06
UR  - https://aes.org/publications/elibrary-page/?id=3710
PB  - Audio Engineering Society
LA  - en
AB  - Tape is often slit with a sinuous centerline ("country laning"). When this tape travels through a transport, the recording on one track shows a varying time displacement with respect to that on another track. When the same signal is recorded on two tracks, and the reproduced signals are subsequently combined, the time displacement produces a "comb filter" frequency response. The output of a full-track head shows a response which is similar up to the first output null. This filter response is used here as a "slope detector" to measure the short-term time azimuth angle variations. Typical peak to peak azimuth angle variations are 600 microradians (0.03 degrees, or 2 minutes); this sets a limit to the interchannel time-displacement performance of recording systems, and to the accuracy of azimuth angle measurements.
ER  -