Lub suab ntsuas ntsuas yog dab tsi? Koj paub ntau npaum li cas txog lub suab ntsuas ntsuas?
Lub npe piav qhia:
Feem ntau muaj peb hom kev tes hauj lwm hnyav: A, B, thiab C. Lub suab nrov A-hnyav simulates cov yam ntxwv zaus ntawm tib neeg lub pob ntseg mus rau lub suab nrov qis qis dua 55dB. B-weighted suab theem simulates tus yam ntxwv zaus ntawm nruab nrab siv suab nrov ntawm 55dB txog 85dB. C-weighted suab theem simulates cov yam ntxwv zaus ntawm lub suab nrov nrov. . Qhov sib txawv tseem ceeb ntawm peb yog qhov degree ntawm attenuation ntawm cov khoom siv qis qis ntawm lub suab nrov. A muaj qhov attenuation tshaj plaws, ua raws li B thiab C qhov tsawg tshaj plaws. A-hnyav suab qib yog qhov siv dav tshaj plaws hauv kev ntsuas suab nrov hauv ntiaj teb vim tias nws cov yam ntxwv nkhaus yog ze rau qhov hnov lus ntawm tib neeg pob ntseg. B thiab C tau maj mam tsis siv lawm.
txhais:
Noise meter, tseem hu ua (noise meter, sound level meter), yog cov cuab yeej yooj yim tshaj plaws hauv kev ntsuas suab nrov. Lub suab ntsuas ntsuas feem ntau suav nrog condenser microphones, preamplifiers, attenuators, amplifiers, zaus meter networks, thiab tus nqi ntsuas ntsuas. Lub hauv paus ntsiab lus ua haujlwm ntawm lub suab ntsuas ntsuas yog: lub microphone hloov lub suab mus rau hauv lub teeb liab hluav taws xob, thiab tom qab ntawd lub preamplifier hloov lub impedance kom phim lub microphone thiab lub attenuator. Lub amplifier ntxiv cov teeb liab tso tawm rau lub network, ua qhov hnyav ntawm lub teeb liab (lossis txuas lub lim sab nraud), thiab tom qab ntawd ua kom lub teeb liab mus rau qee qhov amplitude los ntawm lub attenuator thiab amplifier thiab xa mus rau qhov ntsuas tus nqi zoo.
Kev faib tawm:
1. Raws li cov khoom ntsuas, nws tuaj yeem muab faib ua kev ntsuas cov yam ntxwv ntawm ib puag ncig lub suab nrov (suab teb) thiab ntsuas cov yam ntxwv ntawm lub suab. cov
2. Raws li lub sijhawm tus yam ntxwv ntawm lub suab los yog lub suab teb, nws tuaj yeem muab faib ua qhov ntsuas suab nrov tsis tu ncua thiab ntsuas suab nrov tsis tu ncua. Lub suab tsis khov kho tuaj yeem muab faib ua lub suab hloov pauv hloov pauv, hloov suab nrov tsis tu ncua thiab lub suab impulse. cov
3. Raws li cov yam ntxwv zaus ntawm lub suab los yog lub suab teb, nws tuaj yeem muab faib ua cov suab nrov nrov, suab nrov nqaim thiab suab nrov uas muaj cov suab nrov ntshiab. cov
4. Raws li qhov tseeb ntawm qhov yuav tsum tau ntsuas, nws tuaj yeem muab faib ua qhov ntsuas qhov tseeb, kev ntsuas engineering thiab kev suav pej xeem suab nrov, thiab lwm yam.
