Intermodulation distortion in analog magnetic recording

Author

Fujiwara, Tatsuo

Author_Institution

Toshiba Corp., Kawasaki, Japan

Volume

35

Issue

3

fYear

1999

fDate

5/1/1999 12:00:00 AM

Firstpage

2060

Lastpage

2069

Abstract

Intermodulation distortion in analog magnetic recording is analyzed. Analyses are carried out both for two-signal superimposed recording in audiotape recorders and for color and video signal superimposed recording in video recorders. An error function is used to simulate tape magnetization characteristics assuming a Gaussian switching field distribution. Intermodulation distortion in video color signal recording is analyzed by using an M-H loop trace method taking into account recording demagnetization and by dividing the tape layer into thin layers. Computed results show good agreement with measured data, even with this simple model, without using iterative demagnetizing computation

Keywords

audio recording; intermodulation distortion; iterative methods; magnetic recording; tape recorders; video recording; Gaussian switching field distribution; M-H loop trace method; analog magnetic recording; audiotape recorders; color signal recording; error function; intermodulation distortion; iterative demagnetizing computation; recording demagnetization; tape magnetization characteristics; two-signal superimposed recording; video recorders; video signal superimposed recording; Audio recording; Color; Computational modeling; Demagnetization; Intermodulation distortion; Magnetic analysis; Magnetic recording; Magnetization; Signal analysis; Video recording;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.764912

Filename

764912