1996 Volume 20 Issue 2 Pages 125-128
The noise characteristics of obliquely oriented thin-film tapes are investigated with regard to the head-to-medium spacing. The output spacing loss factor K is estimated to be around 65 db for the normal head scanning direction. and around 85 db for the reverse scanning direction. The noise decrease is found inconsistent with the factor K as the head-to-medium spacing increases. The separately recorded and reproduced noise spectra suggest that the head-to-medium spacing rather results in an increase in the noise component during the recording process. Assuming the spacing loss factor in the play-back process to be 54.6 db, such is found the more marked with a higher carrier frequency, indicating that the modulation noise dominated by the irregularity of the magnetic transition region increases with the transition width.
