Puoro tīwera me tona whakapai ake

Ko te rōpū o tetahi reo irirangi hou kua AM-FM pana. Ka rite ki te ture, e kore e kiritaki noa whakaaro e pā ana ki te meka i te tikanga o enei reta, he reira nui ki te mahara e FM ko teihana FM tino tona reo irirangi e pāho nei i roto i te te tīwharawhara me ki te kounga pai, me AM taea e koe te hopu i te "Lighthouse". Ki te whiwhi tatou ki te kōrero hangarau i te iti rawa hoki te taumata ā-kaiwhakamahi, ka kitea e koutou e te AM - he puoro tīwera me te FM - auau. Me pēhea e rerekē ratou?

Hei whakatangi i te korero music irirangi tohu tangi me amohia e te tahi mau huringa. I roto i te wahi tuatahi kia hanga reira e tika ana mō haapurororaa irirangi. puoro tīwera Ko te ara tuatahi e, signalers, ako Engineers ki tuku ngā hōtaka reo, me te waiata i runga i te rangi. ka American Fessenden i 1906, ki te awhina o generator oscillation aunoa i 50 kHz, te tuatahi i roto i te aamu o te auau kawe. Next faaoti ia ki te raruraru hangarau i roto i te ara māmā, mā te whakanoho i te pōkai hopuoro putanga. I raro i te mana o te ngaru oro i runga i te paura waro roto te o raro ke tona resistance, me te nui o te tohu tukuna i te generator ki te pūihi whakawhitihia, heke ranei nui haere ki runga ki a ratou rānei. Kua Mai kua mea whakaaro puoro tīwera, i.e. huringa i roto i te kaha tīwera o te tohu kawe kia rite ki te hanga i hāngai te raina pūhera ki te āhua o te tohu tuku. I roto i te pia ma, i te mono i e irahiko-rama generators aunoa. Tenei nui heke te rahi me te taimaha foaki.

Auautanga puoro rerekē i kaha tīwera kia e tonu tamau te hōkai o te ngaru kawe, te huri tona auau. Ka rite ki te turanga, me te circuitry hiko i reira e te tahi atu huarahi e ai te te tohu mōhiohio "noho" i runga i te auau irirangi. i hoatu huringa wāhanga me te torohaki ahopae te ingoa o te wāhanga me te ngātere whanui puoro. E au ra te reira e te tīwera pāpāho puoro irirangi rite te ara i roto i o te rā. Ko nga mea ka tahuri i roto i rerekē, kua puritia reira tona tūranga, ahakoa i roto i te puka paku whakarerekētia.

Whakatipu tono mō ngā mōhiohio waiwai auau whakatenatena Engineers ki te titiro mō ngā huarahi ki te whakapiki ake i te maha o takere tuku i runga i te roangaru taua. Āhuatanga o maha-channel päpäho whakaritea ture tauwehe Kotel'nikova ko Nyquist arai, Heoi, i roto i te tua ki te quantization tohu, he reira taea ki te whakapiki ake i te kawenga raraunga i runga i te hongere kōrero mā te huri i te wā. Quadrature tīwera puoro - he tikanga mo te taua tuku, i roto i nei tuku te auau taua te tohu rerekē, neke wāhanga whanaunga ki tetahi ki tetahi i te 90 nekehanga. Puka fakamatala'i he-wāhanga wha ranei te huinga o ngā wāhanga quadrature rua pākoki mahi hara me cos, konei te ingoa.

Kei te whānui whakamahia Quadrature tīwera puoro i roto i te kōrero mamati. Na roto tona āhua he reira he huinga o te wāhanga me te puoro tīwera.