He aha ka ke alapine (frequency) modulation

Ma mua ia i mea i ka manawa "alapine modulation" ua hoʻohana 'ia wale nō ka poʻe nona ka hana komo ai i ka hoʻoponopono a me ka malama ana o lolouila Radio pū i hiki lako a pan. I mea, ia mea he like misconception. Frequency modulation mea maʻa i ka loa, wale no o ka pono o English-'ōlelo aʻe, he nui ka poe i maopopo i ka mea, ua pinepine haawi ia ia ma ka maʻamau o ke ola ole. Ano, ke koa inoa ma luna o nā kānaka a pau o ka lehelehe. Kēia mea okoa, "FM Radio". Hana oe kahaha no ka mea i ka pākuʻina kau "FM"? 'O kēia ka alapine modulation, wale Russified ailona - Frequency Modulation, oa FM.

No kekahi modulation o ka Analog neaiaea e hali ana i pono keia mau mea ike ua hoʻohana 'ia kekahi mauʻano likeʻole o kona ho okumu. Ka loa hoʻomano hoʻohana i kēia 'ano o ka modulation: alapine (frequency) a me ka ikaika hawewe. E noonoo kela a me keia o kēia i loko o hou au mamuli.

Ka manawa "Analog" 'o ia hoʻi uninterrupted i ka manawa, ma ka Akä naÿe i discrete kikohoʻe transmissible lāʻau ikiʻai wale alternation. E mākou hoole i ka paʻa o ke kālaikūlohea a me sine nalu AC. Cartesian i hŘnń ia ma ka pelane: papamoe, a me ka vertical laina. Horizontally hoolohi manawa, a me ka vertical ho i ka pinepine '(ʻikena cia). Sine Wave - he ana nalu, me he mea e kui ma luna o kekahi manawa iho (axis). I ka hoʻohana 'ana i kekahi sinusoid e ke hoʻouna i' ike, e mea pono e hana helu kuʻina i loko o kekahi alanui, i mea,ʻike mau ala, e hoʻolilo i ka nalu.

Mākou manao ana, ua hiki ke lawe i ka sine nalu o kaʻaoʻaoʻelua (nā heluʻai ma ka mamao mai kekahi i kekahi) a laila kaomi ia me ka accordion. E like me ka hopena, i ka nalu, e lilo hou huʻi, i ka wahi o kela a me keia o ia, e emi iho, akā, i ka helu o ka hele no pa alima o ka manawa, ma laila e e hou. I ka mea, sine kana olelo hoopomaikai. Ia mea, i ke alapine (frequency) i ua loli. Eia naʻe, e like me ka sine hawewe mea e pono keia mau mea neaiae: ina ia mea, e lawe ma ka Radio, ka mea waleʻaʻahu kāʻei kua hiki ke lohe (beep, hai hum).

A hiki i keia lawe alapine (frequency) i pihaʻi pono keia mau mea ke keʻena, e mea pono e hana hoʻopā'ālua a me ka modulation, i mea hoʻokahi, a me ka ia. Manao wale e ia mākou i loko o kekahi wahi'uī nalu ka ikaika ma mua o ka mea 'ē aʻe, a me kahi i hohola sine nalu, ia mea, ka mea i hana i kekahi mea. E like me ka hopena, kāʻei kua i pē, hoʻololi i ka leo (hōʻike hou horn). Inā manawa pinepine hoʻololi i ka leo, e hiki ke hoolilo maikaʻi kēia 'ikepili (kani). 'O kēia ke alapine (frequency) modulation. O ka hana ana, i kekahi lima sinusoid hiki - ka mea, o ka hana ana o kūikawā transformers.

A like rula ua hoʻohana 'ia ma ka ikaika hawewe modulation (AM, ikaika hawewe Modulation), a me ka mea wale koena unuhi i undergoes ole loli ma ke alapine (frequency) o ka nalu a me kā lākou kiʻekiʻe. E iā mākou ke manao sinusoid mea loaʻa i na mea kaua mau undulations hoonohonoho ma luna a ma lalo o ka papamoe manawa iho (axis). Ano, me ka pili ana i ka iho (axis) o ka E kikoo a emi aku. E like me ka hopena, ke kiekie loli aʻe. I kekahi pūʻulu o nā nalu hoʻololi no hoi ia ma ka like ala, akā, me ka uuku (a nui) pinepine '. Inā 'oe e hoʻouna i kekahi "crumpled" sine nalu a hiki i ka'ōlelo, e hiki ke lohe i ka loli ma ka kamaʻilio: ma na ale i luna, he mea ka hōʻailona pinepine' mea nui, a ma lalo - he mea emi. A laila, na mea a pau, ua puni hoʻi: like makemake laila kaomi (eo) o ka nalu, ma laila hoʻopā'ālua 'ikepili. Like ma ka hihia o ke alapine (frequency) modulation, he mea no hoi i kekahi hiki i ka pilikino lima - o ka hana ana i na mea hana.

Ka papa hana ka hoʻohana ikaika hawewe modulation neaiae, ua nui kaupalena 'spectral laula, aka o ka mea uuku pono no ka hoʻokani EYI. Eia naʻe, ma muli o ia kekahi hawewe , a me ka hawewe hou ka mana i loko o FM a me AM, i ka mua koi pinepine i hoʻokomo 'o transponders. I huli ai oe, o ka AM Radio ua wehewehe aku ma ka nui uhi i ka mamao a me ka pono distinguishes he mau mea kōkua ma ke keʻena, a hiki ma ke alo o ka leo.