Cov Txheej Txheem Ntawm Cov Lus Cog Tseg Acoustic Hauv Cov Yees Duab Hauv Xov Tooj

Lub hauv paus ntsiab lus ntawm cov lus qhia suab paj nruag hauv videoconferencing system

Yees duab lub koob yees duab ntawm cov lus tshaj tawm suab paj nruag

1. Kev tawm tswv yim (Acoustic tawm tswv yim)

Qhov tseem ceeb tshaj uas cuam tshuam rau lub suab zoo nyob rau hauv qhov system qhov cuab lub zog yog cov tswv yim acoustic, uas yog hu ua suab tawm tswv yim. Qhov kev tiv thaiv ntawm nws yog ib qho teeb meem tseem ceeb uas yuav tsum tau them nyiaj rau thaum tsim thiab siv lub suab qhov cuab lub zog. Thaum siv lub suab qhov cuab lub zog, koj yuav hnov dheev ib co trembling los yog tas mus li casling. Qhov no yog vim lub siab ua kom nrov ntawm lub suab qhov system, thiab lub suab nrov nrov ntawm lub loudspeaker yog muab rov qab rau lub microphone dhau qhov kev txwv. Lub tswv yim uas muaj tshwm muaj qhov teeb meem tshwm sim, uas ua rau tib neeg tsis hnov suab, thiab nws tuaj yeem ua rau lub suab nrov nrov ua haujlwm tsis tuaj yeem ua haujlwm, thiab tsuas tuaj yeem rov qab mus rau qhov qub tom qab txo lub zog ntawm qhov nruab nrab lub suab. Qhov teeb meem no qhia tau hais tias cov lus taw qhia acoustic txwv cov kev ua kom nrov ntawm qhov system. Siv. Qhov tseeb, qhov kev txhawb zog qhov kev teeb tsa tau muab cuam tshuam tawm ua ntej txoj kev xav. Cov tswv yim tsis tshua muaj kev sib txuas lus ua kom lub suab tsim kho qhov tsis txaus siv siv, cov cuab yeej siv suab nrov tsis tuaj yeem siv tau rau tag nrho cov peev xwm, lub suab yuav tsum tsis muaj nyob hauv thaj tsam neeg tuaj saib, qhov kev xa xov tawm yog distorted, thiab nws muaj peev xwm tau hnov ntawm qee qhov frequencies. Qhov no zoo ib yam li lub siab nyob hauv ib chav, uas txo cov lus ntawm cov neeg nyeem thiab qhov zoo ntawm lub suab nkauj.

2. Vim li cas thiaj li tsim muaj cov lus tshaj tawm ntawm acoustic

Acoustic tawm tswv yim yog cov xuav uas yog los ntawm lub suab lub suab xa mus rau cov neeg hais lus los ntawm txoj kev tawm suab nrov. Nyob rau hauv lub xeev tseem ceeb heev uas tsis muaj kev tab li cas, lub suab nrov nrov nrov ntawd yuav tshwm sim, thiab feem ntau yog xam tias muaj ib qho kev tshwm sim tawm tswv yim. Cov ntsiab lus ntawm cov lus taw qhia acoustic yog:

1 Lub vaj tse pob zeb ntaus pob zeb ntawm lub tsev kawm ntawv tseem txom nyem. Piv txwv li, nws muaj ib qho chaw ua resonance.

2 Txoj hauj lwm ntawm lub microphone thiab hais lus tsis yog lawm. Piv txwv, ib lub microphone muab tso rau hauv pem hauv ntej ntawm tus neeg hais lus los tsim ib tug khub txhaj tshuaj nrog luv nrug.

3 Ntau dhau ntawm cov teebmeem tawm tswv yim lossis cov teeb tawm hauv PA. Piv txwv, lub tswv yim ntawm qhov sib tov, qhov kev tawm ntawm qhov sib npaug ntawm qhov sib npaug, qhov kev tawm tswv yim thiab cov khoom tau tawm ntawm cov kev txwv voltage thiab cov hluav taws xob divider, thiab cov zoo li.

4 Ntev npaum li cas ntawm qee tus taw tes nce hauv cov khoom siv hluav taws xob. Piv txwv, qhov nce qhov txiaj ntsig rau nruab nrab thiab qis qis heev.

5 Ntev boosting ntawm qee cov ntsiab lus zaus hauv qhov system equalizer, xws li cov ntsiab lus zaus hauv 200 Hz-3 kHz.

6 Ua kom ntev tshaj ntawm qhov khoom nruab nrab ntawm lub tshuab hlwb hlau.

7 Siv ntau lub microphones nrog cov yam ntxwv sib txawv thiab ib qho ncaj qha tib lub sij hawm, tshwj xeeb tshaj yog omni-directional, high-sensitivity condenser microphones.