Conclusions
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1.
The expressions thus obtained serve to evaluate signal distortions due to tape velocity fluctuations and to SAM in PFM and PPM recording.
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2.
In order to account for the effect of SAM on PFM recording, it is necessary to know the Ordinate of the correlation function KA (τ) of the response amplitude variations process A (t) for the argument τ=T0.
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3.
In evaluating the PPM recording distortions it is necessary to take into account the correlation of response amplitude envelopes in a single track and mutual correlations of the envelopes in tracks used for reference and information signals.
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4.
The effect of the SAM component depends on the resolution of the magnetic tape-head system and the modulation parameters. This component can be made adequately small by a correct selection of the above factors.
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Literature cited
B. M. Stepanov and V. N. Filinov, Izmeritel'. Tekh., No. 7 (1966).
B. M. Stepanov and V. N. Filinov, Izmeritel'. Tekh., No. 9 (1966).
Additional information
Translated from Izmeritel'naya Tekhnika, No. 2, pp. 15–18, February, 1973.
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Stepanov, B.M., Filinov, V.N. Evaluation of signal distortions in magnetic recording with pulse modulation. Meas Tech 16, 176–181 (1973). https://doi.org/10.1007/BF00812545
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DOI: https://doi.org/10.1007/BF00812545