Kuenzanisa pakati pedigital intercom uye analog intercom

Traditional analogi  intercomshandisa masaini eanalogi kuendesa mameseji, ayo ane zvazvakaipira senge yakaderera frequency kushandiswa, kupindirana kwakanyanya, mabasa ebhizinesi rimwe chete, kutaurirana kusina kugadzikana, uye manejimendi akaoma uye kutonga. Digital Intercom inzira yekutaurirana iyo inodhijita masaini eanalogi kuburikidza nedhijitari encoding uye modulation, uye inoagonesa vachishandisa nzira dzedhijitari masaini ekugadzirisa.

Mudhijitari intercom, masaini emazwi eanalogi anotanga kushandurwa kuita masaini edhijitari kuburikidza neA / D shanduko uye encoding yekutaura. Nekuda kweiyo nhete bandwidth yedhijitari intercom, kazhinji 12.5kHz kana 6.25kHz (analog 12.5kHz kana 25kHz), iyo yekutaura encoding mudijitari intercom kazhinji inotora parametric encoding nzira, iyo isingakodere waveform yechiratidzo chekutaura, asi inobvisa iyo maficha ma paramita ayo anoburitsa iwo masaini ekutaura. Mwero wekutapurirana unowanzo pakati pe1.2-4.8kb/s, iyo inogona kusangana nebandwidth inodiwa yedigital intercom.

Chinangwa chikuru cheiyo chiteshi encoding uye decoding ndechekuvandudza kuvimbika kwemadhijitari ekufambisa masisitimu. Nekuwedzera mamwe masaini asina basa semakodhi ekutarisa ekudzora kukanganisa mukutevedzana kwekutaura kwekodha maererano nemimwe mitemo, mugamuchiri anogona kuona zvikanganiso kana kuzvigadzirisa otomatiki zvichibva pamitemo iyi kuita izvi.

    Analog Intercom kazhinji shandisa nzira dzakadai se frequency inversion yeruzivo encryption, iri nyore uye iri nyore kupaza. Digital intercom inoshandisa dhijitari encryption kuchengetedza ruzivo rwevashandisi, iro rinonyanya kukwikwidza mune mamwe maindasitiri akakosha seaya nendege uye njanji inoda ruzivo rwepamusoro. Kune nzira dzakawanda dzekunyorera, dzakadai sekuita modulo-2 encryption pachiratidzo chedhijitari uye nguva yakareba yem-sequence yekupedzisa encryption. Mhedziso yekugamuchira inoshandisa yakafanana m-kutevedzana uye yakagamuchirwa yakavharidzirwa chiratidzo kuita modulo-2 encryption zvakare, kupedzisa decryption.

Kana ichienzaniswa neanalog intercom, digital intercom ine simba rekurwisa kupindira, kunaka kwekufona, kushandiswa kwema frequency, kuita kwakanaka kwekuvanzika, tsigiro yemasevhisi edatha, kufambisa kukanganisa kwemahara, uye kufambisa kushandiswa kweseti yedhijitari relay masisitimu, inoenderana nemirairo yekuvandudza kwekutaurirana. Pasina kupokana, digital intercom ndiyo inotungamira yewalkie talkie tekinoroji kuvandudza uye zvishoma nezvishoma inotsiva analog intercom.

Mumusika wemazuva ano wekuvaka intercom, kunyangwe TCP/IP yakazara dhijitari yekuvaka intercom tekinoroji uye mabasa akadarika echinyakare analog intercom, iyo "timeline" kuruboshwe nekurudyi pamusika iri kungofamba neanofungidzira turtle kumhanya, saka zvechinyakare intercom zvigadzirwa zvichiri kufarirwa mumusika, nekuti pane chinhambwe chikuru pakati pedhijitari yekuona intercom nenguva.