Yuav ua li cas yog lub shoutbox

Tej zaum txhua txhua niaj hnub tus txiv neej yog tau teb cov lus nug, yog dab tsi lub ncauj npog ncig sab thiab dab tsi yog nws rau? Luv luv peb yuav hais tias qhov no ntaus ntawv rau suab amplification hwj chim los yog lub suab hais kom ua.

Tab sis nws hloov tawm hais tias lub ancient cov neeg , ib yam nkaus thiab, paub dab tsi ncauj npog ncig sab. Lawv pub on tus plob hav zoov teeb liab siv raws li ib tug ncauj npog ncig sab ntawm lub tshuab raj ntawm cov tsiaj, thiab lwm yam zoo xws khoom. Tom qab ntawd, lub tshuab raj yog siv tsis tau tsuas yog raws li xws li, tab sis raws li seev suab paj nruas.

Qhov no interesting thiab pab tau heev ntaus ntawv muaj ib tug conical zoo thiab tsa ib tug flared raj thiab muaj peev xwm faib lub suab nyob rau hauv ib qho kev taw qhia nyob rau ib lub deb. Hais tias conical zoo zoo tshaj plaws txhawb rau suab hais tawm thiab ua rau kom nws cov ntim.

Conical horn, los yog es, nws siv, muaj ib tug nplua nuj thiab muaj keeb kwm ntev, uas yog tseem deb yog tsis tau tiav, yog li ntawd nws tau paub tias lub khob hliav qab - nws yog ib tug ntawm cov earliest thiab zoo tshaj plaws suab hais tawm technologies. Conical horn yog dav siv kom txog thaum uas tam sim no muab commands mus rau lub tsheb, kev ua si sib tw, demonstrations, coj lub loj koob tsheej thiab lwm yam txheej xwm, ntawm pej xeem concerts, raws li zoo raws li qhia nyob rau hauv ib qho xwm ceev. Qhov no ntaus ntawv yog lub suab synthesizer yog invented los ntawm Samuel Morland nyob rau hauv 1670. Lub earliest pab kiag li lawm muaj ib tug hau thiab ntsawb, raws li qhia archeological excavations, ua los ntawm cov iav, thiab ces tooj liab. Yog li ntawd, dab tsi yog qhov kub thiab thaum nws tshwm sim, peb paub. Thiab yog dab tsi yog lub hauv paus ntawm nws txiav txim? Qhov no apparatus Txawm li cas los ywm lub suab tsis thiab xa lawv nyob rau hauv ib tug coj. suab amplification tshwm sim vim resonance, uas nyob rau hauv lem distorts lub timbre ntawm lub suab kis.

Tus nqi ntawm lub horn yog ncaj qha proportional rau lub ntim thiab clarity ntawm lub kis suab, piv txwv li lub siab horn, ntau dua qhov kev ncua deb uas yog kis tau lub suab ntawm kev hais lus thiab lub dlaim phaj yuav tsum yog tus hais lus. Txij li thaum ships lug sawv cev mouthpieces txog ob meters nyob rau hauv ntev thiab nrog ib tug hluav taws xob 25 centimeters nyob rau hauv txoj kab uas hla. Tej conical horn yuav kis undistorted hais lus ntawm ib tug deb ntawm ob kilometers. Thiab thaum uas siv cov ntaus ntawv mus txog rau xya meters nyob rau hauv ntev nws twb tau mus hloov nws mus rau ib tug deb ntawm txog rau kis lus mev.

Niaj hnub no, feem ntau ntawm cov suab yog amplified los ntawm ib tug megaphone, uas muaj ib tug microphone, amplifier thiab hais lus. Txawm li cas los, lub ntsiab keeb ntawm cov horn yog ib lub raj, uas yog ib tug raj tapered zoo. Peb yuav hais tias qhov megaphone - ib tug conical kub. Xws li yav tas los siv los txhim kho lub rooj sib hais kom txog rau thaum cov niaj hnub rooj sib hais pab. MegaFon li zoo raws li lub ncauj npog ncig sab ntawm concentrates thiab amplifies lub suab thiab hau nws nyob rau hauv txoj cai coj. Nws twb yees ua los ntawm Edison nyob rau hauv lub lig thib kaum cuaj caug xyoo.

Tsis tau conical horn yog tsis ib txwm zoo, tiam sis tsuas yog nyob rau hauv cov ntaub ntawv ntawm siab thiab nruab nrab frequencies. Lawv loj nyob rau tib lub sij hawm, dhau lawm, yuav tsum tsis txhob yuav ib yam nkaus thiab loj. Li no lub ntuj cov kev txwv rau kev siv cov tshuab raj raws li ib co suab systems. Yog li ntawd, lub ncauj npog ncig yuav tsum tau tsuas yog siv qhov twg nws yog ua tau nyob rau hauv qhov chaw thiab qhov chaw uas nws siv yog ib zajlus kom thiab yog tshwm sim los ntawm tej yam tshwj xeeb xav tau kev pab, xws li thaum koj xav tau ib tug high efficiency (siab tso zis nrog tsis muaj zog noj) los yog tswj directional beam ntawm lub suab feem ntau izlucheniya.Ochen horn yog siv nyob rau hauv lub koom haum ntawm cov txheej xwm thiab demonstrations muab commands thiab cov kev taw qhia kev sib hwm.

Qw, tsis muaj tsis ntseeg, nws muaj ib tug keeb kwm ntev heev ntawm nws siv. Tam sim no, nws yog lub npe hu hais tias xws li ib tug ncauj npog ncig sab. Qhov no yog ib tug tseem ceeb kev ntsuas yuav tsum tau siv rau ib ntev lub sij hawm.