Kusiyana pakati peChitibel uye Watts
Zvigadziriswa (chiyero chekurira) uye watts (chiyero chemugadziri wemasimba) ndiwo mazwi anowanzoshandiswa paanotsanangura zvidhina zvehurukuro. Zvinogona kuvhiringidza, saka heino tsanangudzo yakajeka yezvavanoreva uye kuti vanobatanidza sei.
Chii Chinonzi Decibel?
A decibel yakaumbwa nemashoko maviri, deci, zvinoreva chegumi chegumi, uye bel, iyo inonzi inonzi ainzi Alexander Graham Bell, muumbi wefoni.
Bheri ndiro chikwata chekutinhira uye decibel (dB) chikamu chegumi chebhande. Nzeve yevanhu inonzwisisika kune zvakasiyana-siyana zvemazwi ari kubva ku 0 decibels, iyo inenge yakanyarara kunyarara kune nzeve dzevanhu, kusvika ku 130 decibels, inokonzera marwadzo. Izwi re 140 dB rinogona kukonzera kukuvadzwa kwekunzwa kana wakatsungirira kwenguva yakareba apo uine 150 dB inogona kuputika mazamu ako, pakarepo inokuvadza kunzwa kwako kunzwa. Kunzwika pamusoro pechinhu ichi kunogona kukuvadza mumuviri uye kunyange kuuraya.
Mimwe mienzaniso yemanzwi uye maitiro avo:
- Kufema kwevanhu kunonzwa kubva kune imwe nzvimbo inenge 10 dB
- Kukurukurirana kwakajairika inenge 60 dB
- Muchenesa mudziyo unowanzotora 80dB
- Jet injini iri pedyo nepakati inenge 120 dB (ndicho chikonzero iwe uchiona vashandi vari pamucheto wechikwata chendaneti ichipfekedza makumbo ekudzivirira)
- An ambulensi siren zvakare inenge 120 dB kusvika pedyo
Nzeve yevanhu inokwanisa kunzwa uye kuona kuwedzera kana kuderera muzwi rakanaka rakaenzana ne-1 dB. Chero zvishoma pane +/- 1 dB zvakaoma kunzwisisa. Kuwedzera kwe10 dB kunonzwisiswa sekunge kaviri kaviri kudanidzira nevanhu vazhinji.
Chii Chinonzi Watt?
A watt (W) inhengo ye simba, semabhiza kana joules, anonzi James Watt, nyanzvi yekuScottish, makhemisi, uye muumbi.
Mune audio, a watt inguva yeiyo simba rinobva kune anogamuchirwa kana rakagadziriswa rinoshandiswa kusimbisa dhidhipikiti. Vatauriri vakayerwa nenhamba ye Watts yavanogona kubata. Kushandisa chikwata chinogadzira watt zvikuru kupfuura mukurukuri anongorongedzerwa kugadzirisa kunogona kuputika, nokudaro kunokuvadza, mukurukuri. (Paunotarisa vatauri, unofanira kufungisisa kunzwisisana nemukurukuri pamwe chete.)
Ihwo hukama pakati pemakirwe emagetsi anowanikwa uye masheti ehupfumi wehutano haisi yechokwadi; somuenzaniso, kuwedzerwa kwema 10 watts hakushanduri mukuwedzera kwe10 dB muhuwandu.
Kana iwe uchienzanisa huwandu hukuru hwe 50-watt amplifier ne 100-watt amplifier, musiyano ndewe 3 dB, zvisinganyanyi kukura kupfuura kukwanisa kwenzeve yevanhu kunzwa mutsauko. Zvinotora chikwata chechigadziro nemasimba makumi matanhatu (500 watts!) Kuti chionekwe sechiviri kaviri-kuwedzera 10 dB kuwedzera.
Chengetedza izvi mupfungwa paunenge uchitenga chigadziri kana kuti mupiki:
- Kunetseka simba rinobuda (watts) richaguma nekuwedzera kwe 3 dB mukudanidzira.
- Kuwedzerwa katatu kusvikira simba rinobuda richaguma nekuwedzera kwe10 dB, kana kurira kunowedzera kaviri.