Lub hauv paus ntsiab lus ntawm lub suab acousto-sib nqus: qhov hloov ntawm lub tshuab kuaj pom tawm ntawm 58kHz qis-zaus sib nqus tsis sib nqus ntawm 1/75 thib ob, ua rau thaj chaw nrhiav puag ncig nws.
Thaum cov ntawv sau tag ntawm ob qho tshwj xeeb amorphous hlau nplooj ntawv nkag mus rau thaj chaw pom, vim muaj kev cuam tshuam rau lub tshuab hluav taws xob lossis lwm cov induction, uas yog, lub suab nrov, cov paib no yuav tau txais los ntawm cov neeg txhawb nqa, ua rau lub kaw lus ceeb toom Cov.