Ukuhlaziywa kanye nokucubungula kwesignali yokuthola inkulumo ekude nge-laser

I-Laserukuhlaziywa kanye nokucubungula kwesignali yokuthola inkulumo ekude
Ukuchazwa komsindo wesiginali: ukuhlaziywa kwesiginali kanye nokucutshungulwa kokutholwa kwenkulumo ekude nge-laser
Enkundleni emangalisayo yobuchwepheshe, ukutholwa kwenkulumo ekude nge-laser kufana ne-symphony enhle, kodwa le symphony nayo inomsindo wayo "womsindo" - isignali. Njengezilaleli ezinomsindo ongalindelekile ekhonsathini, umsindo uvame ukuphazamisaukutholwa kwenkulumo nge-laserNgokusho komthombo, umsindo wokutholwa kwesignali yenkulumo ekude nge-laser ungahlukaniswa cishe ngomsindo owethulwa yithuluzi lokulinganisa ukudlidliza kwe-laser uqobo, umsindo owethulwa eminye imithombo yomsindo eduze kwendawo yokulinganisa ukudlidliza kanye nomsindo odalwa ukuphazamiseka kwemvelo. Ukutholwa kwenkulumo ekude ekugcineni kudinga ukuthola izimpawu zenkulumo ezingabonwa ngokuzwa kwabantu noma imishini, futhi imisindo eminingi exubile evela endaweni yangaphandle kanye nohlelo lokuthola kuzonciphisa ukuzwakala nokuzwakala kwezibonakaliso zenkulumo ezitholiwe, futhi ukusatshalaliswa kwebhendi yemvamisa yale misindo kwenzeka ngokuhambisana nokusatshalaliswa kwebhendi yemvamisa eyinhloko yesignali yenkulumo (cishe u-300 ~ 3000 Hz). Akukwazi ukuhlungwa nje ngezihlungi zendabuko, futhi kudingeka ukucutshungulwa okwengeziwe kwezimpawu zenkulumo ezitholiwe. Njengamanje, abacwaningi bafunda kakhulu ukususa umsindo womsindo we-broadband ongami kanye nomsindo womthelela.
Umsindo wangemuva we-Broadband uvame ukucutshungulwa ngendlela yokulinganisa i-spectrum yesikhathi esifushane, indlela yesikhala esincane kanye nezinye izindlela zokucindezela umsindo ezisekelwe ekucutshungulweni kwesignali, kanye nezindlela zokufunda komshini zendabuko, izindlela zokufunda okujulile kanye nobunye ubuchwepheshe bokuthuthukisa inkulumo ukuze kuhlukaniswe izimpawu zenkulumo ezihlanzekile nomsindo wangemuva.
Umsindo we-impulse umsindo we-speckle ongase wethulwe umphumela we-dynamic speckle lapho indawo yethagethi yokuthola iphazanyiswa ukukhanya kokuthola kohlelo lokuthola lwe-LDV. Njengamanje, lolu hlobo lomsindo lususwa kakhulu ngokuthola indawo lapho isignali ine-peak yamandla aphezulu bese ifakwa esikhundleni sayo ngenani elibikezelwe.
Ukutholwa kwezwi okude nge-laser kunamathuba okusetshenziswa emikhakheni eminingi efana nokuvimba, ukuqapha kwemodi eminingi, ukutholwa kokungena, ukusesha nokusindisa, imakrofoni ye-laser, njll. Kungabikezelwa ukuthi umkhuba wocwaningo lwesikhathi esizayo wokutholwa kwezwi okude nge-laser uzosuselwa kakhulu (1) ekuthuthukiseni ukusebenza kokulinganisa kohlelo, njengokuzwela kanye nesilinganiso sesiginali kuya komsindo, ukwenza ngcono imodi yokuthola, izingxenye kanye nesakhiwo sohlelo lokuthola; (2) Thuthukisa ukuzivumelanisa nezimo kwama-algorithms okucubungula isignali, ukuze ubuchwepheshe bokuthola inkulumo ye-laser bukwazi ukuzivumelanisa namabanga ahlukene okulinganisa, izimo zemvelo kanye nezinhloso zokulinganisa ukudlidliza; (3) Ukukhetha okunengqondo kakhulu kwezinhloso zokulinganisa ukudlidliza, kanye nokubuyiselwa kwezimpawu zenkulumo ezivame kakhulu ezilinganiswa ezinhlosweni ezinezimpawu zokuphendula imvamisa ezahlukene; (4) Thuthukisa isakhiwo sohlelo, futhi uthuthukise uhlelo lokuthola ngokusebenzisa

ukwenziwa kube lula, ukuphatheka kalula kanye nenqubo yokuthola ehlakaniphile.

UMFANELO 1 (a) Umdwebo wesimiso wokuvimbela i-laser; (b) Umdwebo wesimiso wohlelo lokuvimbela i-laser