Yuav siv lub suab ntsuas ntsuas li cas? Cov txheej txheem yog dab tsi?
Xyuas lub sij hawm ntawm lub suab ntsuas ntsuas
Thaum lub sij hawm ntsuas feem ntau, ib daim ntawv qhia txog qhov xwm txheej raug kaw, feem ntau yog los ntawm kev kaw lub sijhawm ntawm qhov xwm txheej ntawm lub moos lossis xov tooj ntawm tes. Nws yog ib qho tseem ceeb uas lub sij hawm ntawm lub suab ntsuas ntsuas qhov sib npaug ntawm koj lub sij hawm kom koj cov ntawv yuav phim qhov uas tau kaw rau ntawm lub ntsuas suab. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog thaum siv ob lossis ntau lub suab suab timers.
Teeb tsa cov ntawv teev cia thiab tshaj tawm cov voj voog
Qee cov qauv thiab cov kev cai qhia tshwj xeeb ntsuas lub sijhawm. Yog tias koj lub suab ntsuas ntsuas txhawb nqa cov ntaub ntawv nyob rau ntau lub sijhawm (hu ua cov ntaub ntawv kaw lus thiab qhia lub sijhawm ntawm Brüel & Kjær suab ntsuas ntsuas), xav txog kev teeb tsa lub sijhawm qhia raws li tus qauv yuav tsum tau ua, thiab lub sijhawm kaw yuav tsum luv dua. Txoj kev no, koj muaj qhov yooj yim ntawm kev ntsuas ncaj qha rau cov txiaj ntsig xav tau rau kev tshaj tawm thiab muaj peev xwm tshawb xyuas thiab kho qhov cuam tshuam luv luv. Qhov no yuav ua rau nws yooj yim dua rau koj thaum koj pib sau koj daim ntawv tshaj tawm.
Xyuas seb koj puas muaj cov ntaub ntawv pub dawb txaus
Qhov no yog ib qho tseem ceeb heev, yog li nws yooj yim rau tsis nco qab: nco ntsoov xyuas seb puas muaj qhov chaw dawb txaus ntawm daim npav nco rau kev ntsuas tom ntej. Nws yog ib qho kev xyaum zoo kom tsis tu ncua tshem tawm cov ntaub ntawv ntsuas qub tom qab nws tau nyab xeeb rub tawm thiab khaws cia, zoo li khaws cia ib daim npav nco thiab lub suab ntsuas.
Teeb tsa cov ntaubntawv povthawj siv
Cov ntaub ntawv kaw tseg tuaj yeem yog qhov tseem ceeb heev thaum cov ntaub ntawv ntsuas tom qab ua tiav los txheeb xyuas lub suab nrov lossis ua cov ncauj lus kom ntxaws xws li FFT-raws li kev ntsuas suab. Yog tias koj lub suab ntsuas ntsuas txhawb nqa cov ntaub ntawv, nco ntsoov teeb tsa los ntsuas ntawm qhov kev daws teeb meem raug thiab tus qauv ntsuas rau koj xav tau. Nws yog tsim nyog sau cia hais tias lub suab kaw nrog tsis siv neeg nce tsis tuaj yeem siv rau kev tshuaj xyuas tom ntej.
Teem zaus qhov hnyav thiab bandwidth rau kev soj ntsuam zaus
Nws yog qhov zoo tshaj los xyuas kom meej tias qhov tseeb qhov hnyav thiab qhov bandwidth raug ntsuas rau kev ntsuas zaus. Thaum cov kev coj ua zoo tshaj plaws yog qhov hnyav tshaj qhov spectrum, los yog muab 1/3 octave bands rau hauv 1/1 octave bands, ob qho tib si muaj peev xwm tsis zoo. Tom qab qhov hnyav tuaj yeem tsim qhov yuam kev tseem ceeb thaum muaj lub suab nrov nyob deb ntawm qhov nruab nrab zaus. Thaum summing 1/3 octave bands ua hauj lwm rau Leq cov ntaub ntawv, nws tsis ua hauj lwm rau ntau yam tsis, xws li txheeb cais los yog txawm Lmax los yog Lmin.
Tig ncua qis frequencies rau lossis tawm
Kev ntsuas kev siv qhov txuas txuas qis qis tuaj yeem ua rau muaj kev cuam tshuam ntawm cov suab nrov cua ntawm kev ntsuas, tshwj xeeb tshaj yog cov uas siv Z-frequency weighting. Yog li ntawd, tsuas yog txuas ntxiv qis zaus raug suav nrog thaum lub suab nrov tsawg zaus cuam tshuam.
