The formation of magnetic image of acoustic signal in polycrystalline magne
tics has been analyzed. The relations for the amplitude of domain-acoustic
echo signal have been obtained. The calculations of the dependences of doma
in-acoustic echo on amplitudes of recorded, recording and reading signals h
ave been carried out. The theoretically obtained results are in good correl
ation with experimental data. (C) 1999 Elsevier Science B.V. All rights res
erved.