Reflection of sound waves also lead to echoes … Flat or plane surfaces reflect the sound waves in xws li lub kaum sab xis ntawm lub yoj mus rau saum npoo sib npaug ntawm lub kaum sab xis lub yoj tawm ntawm qhov chaw. Kev xav ntawm lub suab nthwv dej tawm ntawm qhov chaw nkhaus ua rau muaj qhov tshwm sim nthuav dua.
Lub suab yog dab tsi?
Thaum lub suab txav mus rau hauv qhov nruab nrab, nws tawm tsam qhov nruab nrab ntawm lwm qhov nruab nrab thiab rov qab mus rau lwm qhov kev taw qhia, qhov tshwm sim no hu ua qhov kev xav ntawm lub suab. Cov nthwv dej no hu ua suab nrov nthwv dej.
Yuav ua li cas yog cov suab piv txwv?
Siv Reflection of Sound:
Reflection of sound is used in many devices. Piv txwv li; megaphone, nrov nrov, lub teeb horn, stethoscope, kev pab hnov lus, suab board thiab lwm yam.
Yuav ua li cas thaum lub suab cuam tshuam?
Kev xav ntawm lub suab nthwv dej kuj ua rau rau ncha. Echoes txawv dua li reverberations. Echoes tshwm sim thaum lub suab nthwv dej tuaj txog ntawm pob ntseg ntau dua 0.1 vib nas this tom qab lub suab nrov nthwv dej tau hnov. … Yuav muaj ib qho ncha es tsis txhob reverberation.
Lub suab cuam tshuam thiab nqus li cas?
Thaum lub suab los ntawm lub suab nrov sib tsoo nrog cov phab ntsa ntawm chav tsev ib feem ntawm lub suab lub zog tau tshwm sim, ib feem kis tau, thiab ib feem yog nqus mus rau hauv cov phab ntsa … suab absorbed yog tswj hwm los ntawm acoustic impedances ntawm ob qho tib si xov xwm thiab yog ib qho kev ua ntawm zaus thiab qhov xwm txheej kaum.
