Uma kukhulunywa ngezinhlelo zomsindo, ukuqonda izinto nemisebenzi yazo kubalulekile ekufezeni ulwazi lomsindo olunhle kakhulu. Enye yezinto ezinjalo uhlelo lwesikhulumi olungenzi lutho, oludlala indima ebalulekile ekuletheni umsindo osezingeni eliphezulu. Ngokungafani nezinhlelo zesikhulumi ezisebenzayo, izipikha ezingapheli azinazo izikhulisi ezakhelwe ngaphakathi; esikhundleni salokho, badinga i-amplifier yangaphandle ukusebenza ngempumelelo. Th