The Measurement and Subjective Assessment of Modulation Noise in Magnetic Recording

Trendell EG. The Measurement and Subjective Assessment of Modulation Noise in Magnetic Recording. J Audio Eng Soc. 1969;17(6):644-653. Available from: https://aes.org/publications/elibrary-page/?id=1544

@article{Trendell1969_1544,
  author = {Trendell, Edward G.},
  title = {{The Measurement and Subjective Assessment of Modulation Noise in Magnetic Recording}},
  journal = {Journal of the Audio Engineering Society},
  volume = {17},
  number = {6},
  pages = {644--653},
  year = {1969},
  month = dec,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=1544}
}

TY  - JOUR
TI  - The Measurement and Subjective Assessment of Modulation Noise in Magnetic Recording
AU  - Trendell, Edward G.
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 17
IS  - 6
SP  - 644
EP  - 653
PY  - 1969
DA  - 1969/12/06
UR  - https://aes.org/publications/elibrary-page/?id=1544
PB  - Audio Engineering Society
LA  - en
AB  - The report describes a satisfactory measuring system in which a meter reading corresponds reasonably well with the assessment of modulation noise by subjective listening tests on various tapes at speeds from 30 ips to 3 3/4 ips. The decision to replace the dc magnetization test by an ac sideband measurement is explained, as are the various parameters included in such measurement. The use of a technique of introducing controlled amounts of modulation noise is described. By this means the threshold of audibility of narrowband modulation nosie is determined both for a 1 kHz tone and for selected musical items as signals, and measurements and subjective assessment of narrowband modulation noise with changes of bias level and tape speed are analyzed. Wideband modulation noise is analyzed in terms of the sidebands produced with and without a pressure pad and/or intertia rollers. This enables a figure of merit for the tape to be obtained relative to a known standard.
ER  -