Feem ntau cov khoom muag yuav tau muaj qhov lus teb tau teev rau hauv raws li ib qho ntawm cov qauv qhia ntawv. Cov lus teb tuaj yeem nrhiav tau rau cov neeg tham, pob ntseg, microphones, amplifiers, receivers, CD / DVD / media players. mobile players / devices, thiab lwm tus xov tooj ntawm lwm cov suab cuab yeej lossis cov khoom . Qee cov lag luam nyiam tout muaj qhov sib txawv ntawm cov kab ntau, tab sis cov zauv no tsuas yog qhia txog zaj dab neeg xwb thiab tsis tas yuav yog qhov ntsuas ntawm lub suab nrov zoo. Ib txheej ntawm lub headphones yuav sau cov lus teb rau cov lus tshaj tawm ntawm 20 Hz - 34 kHz +/- 3 dB, tiam sis nws txhais li cas?
Qhov Kev Tshaj Tawm Sai Li Cas?
Cov lus teb zaus, uas feem ntau tuaj yeem pom tshwm ntsej muag rau daim graph / daim ntawv qhia ua ib qho nkhaus, piav qhia txog kev siv lub suab nrov li cas ntawm ntau qhov chaw frequencies. Kev ntsuas yog ntsuas hauv hertz (Hz) raws ib daim duab x-axis, nrog lub suab suab qib (SPL) ntsuas hauv decibels (dB) raws daim duab y-axis. Feem ntau cov khoom npe teev uas muaj tsawg kawg 20 Hz (lows) mus rau 20 kHz (highs), uas yog kev sib hais dav dav rau cov tib neeg. Cov xwm txheej saum toj saud thiab qis dua cov naj npawb no feem ntau yog hu ua cov lus teb rau cov lus teb ncua kev sib tw thiab kuj tseem ceeb. Kev ntsuas ntawm qhov decibels qhia tias qhov kev hloov siab tshaj plaws (xav txog nws zoo li kev kam rau siab los yog ib qho kev poob qaum ntawm kev ua yuam kev) ntawm qhov ntim theem thiab zoo npaum li cas tus cuab yeej twj ywm los ntawm qhov qis tshaj plaws mus rau lub siab tshaj plaws tones. Ib qho ntawm peb qhov kev ntsuas tau zoo heev hauv cov lus teb xws li cov lus teb.
Vim li cas lub caij ua haujlwm tseem ceeb heev
Koj tuaj yeem coj ob tug, tsis yog tib yam kev hais lus nrog tib lub sijhawm tshaj plaws thiab xaus suab paj nruag ua si sib txawv ntawm txhua tus. Qhov no yuav ua tau vim hais tias tuam txhab siv qee zaus siv cuab yeej xuas hluav taws xob / software tsim los qhia txog qee qhov sib tw ua rau lwm tus, tsis zoo li ib tus neeg tuaj yeem ua rau kev hloov kho nrog ib tus sib tw hauv lub tso suab . Tus nqi ntawm qhov sib txawv piav qhia txog tias lub suab yuav raug cuam tshuam li cas ntawm qhov tseeb.
Cov neeg lim ntshav feem ntau nrhiav cov khoom thiab cov khoom uas xa tuaj rau nruab nrab (los yog kom nyob ze tau) cov lus teb zaus. Qhov no tshwm sim nyob rau hauv lub cim "puv" sonic kos npe uas zoo sib xws ntawm kev sib raug zoo ntawm ntau yam twj paj nruag, cov suab lus, thiab cov tones uas tsis muaj qab hau lossis tsis muaj teeb meem ntau dua. Yeej tseem zoo nkauj, suab paj nruag muaj peev xwm nyiam ua tau raws li keeb kwm kaw vim muaj me ntsis-rau-tsis yuam hloov mus rau kev luam. Thiab yog tias ib tug thiaj li xaiv, ntxiv tuning nrog ib tus equalizer tseem yog ib qho kev xaiv.
Tab sis txhua leej txhua tus muaj cai rau tus kheej nyiam, muaj ntau tus neeg hais lus, lub mloog xov tooj, thiab ntau yam kev sib tham muab lawv tus kheej coj mus rau yam. Piv txwv li, "v-formed" suab kos npe txhawb zog siab thiab qis zog thaum lub caij nruab nrab ntawm qhov nruab nrab. Qhov no tuaj yeem rov hais dua rau cov neeg uas mloog cov nkauj EDM, pop, lossis hip-hop suab paj nruag (rau npe ob peb) uas nthuav tawm ntau hom bass thiab sparkly treble. Daim ntawv kos npe "zoo li zoo" yog zoo ib yam, tiam sis muaj qhov sib nrawg sib hloov mus rau qib qis dua.
Qee cov khoom mus rau ntau lub suab "analytical" uas ua rau lub siab (thiab qee zaum qhov nruab nrab) thaum lub sij hawm rov qab zoo dua qub. Qhov no ua tau zoo rau cov neeg uas pom lawv tus kheej mloog cov kev ua yeeb yam los yog cov suab paj nruag, thiab lwm yam. Txheej ntawm pob ntseg los sis cov neeg hais lus "bassy" yuav ua rau kom cov lows loj thaum lub sij hawm pleev xim rau qhov siab thiab nruab nrab. Qee lub sij hawm ib qho khoom ua pov thawj rau lub npe kos npe uas yog lub hom phiaj ntawm ib los yog ntau hom.
Cov lus teb txhua zaus tuaj yeem pab - tab sis tsis yog lub ntsiab nkaus xwb - los txiav txim siab tias yuav ua li cas lub suab tau pom zoo rau kev sib cais ntawm cov khoom siv thiab kev nthuav dav ntawm ib tus neeg. Tej khoom siv uas muaj dip ntse ntse los yog spikes hauv frequencies tuaj yeem ua rau mloog cov tawv nqaij lossis qaug zog. Cov kev ceev ntawm cov ntawv sau ua si thiab kev ua si (feem ntau yog qhov tua thiab lwj) kuj tseem ceeb rau kev ua. Cov khoom sib txawv yog qhov sib npaug tseem ceeb, vim lub mloog pob ntseg thiab cov lus sib tham nrog tib cov lus / zoo sib xws li tseem tuaj yeem suab sib txawv vim qhov chaw yuav tsum tau ua kom txhua tus tawm.