Scheduled System Maintenance:
On May 6th, single article purchases and IEEE account management will be unavailable from 8:00 AM - 5:00 PM ET (12:00 - 21:00 UTC). We apologize for the inconvenience.
By Topic

Fourier synthesis of digital recording waveforms

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Lindholm, D. ; Ampex Corporation, Redwood City, Calif.

A digital recording system is modeled by means of a complex Fourier series representation employing transforms of arctangent functions to describe the effects of write field gradient demagnetization and self-demagnetization. Pulse asymmetry and rise time effects are incorporated by means of phase shifts from complex transfer functions used in describing the dependence of head properties on a complex permeability. Experimental measurements on a specific system (Co substituted γ-Fe2O3tape and metal heads) show good correlation with the theory, especially with respect to spectral content, waveform shape, and peak shifts. The model is one-dimensional and limited to recording media initially ac demagnetized and to a write current range in which it is possible to define an effective penetration depth for saturation recording.

Published in:

Magnetics, IEEE Transactions on  (Volume:9 ,  Issue: 4 )