Bukana ea Taelo ea Mochine o Matla oa AEC C-39

AEC C-39 Dynamic Processor

Ho etsahetseng ka Dynamic Range le Mokhoa oa ho e khutlisa

Ka konsarete, molumo oa 'mino oa 'mino oa fortissimo o phahameng ka ho fetisisa o ka fihla ho 105 dB*, 'me o phahame ho feta moo. Lihlopha tsa rock tse sebetsang hantle hangata li feta boemo ba khatello ea molumo oa 115 dB. Ka lehlakoreng le leng, tlhahisoleseling e ngata ea bohlokoa ea 'mino e na le li-harmonics tse phahameng tse utloiloeng maemong a tlase haholo. Phapang lipakeng tsa 'mino o lerata le o khutsitseng ka ho fetesisa o bitsoa dynamic range (e hlahisoang ke dB). Ha e le hantle, ho rekota molumo oa 'mino o monate ntle le ho eketsa lerata kapa ho khopamisa, mochini oa ho rekota o lokela ho amohela maemo a matla a bonyane 100 dB lipakeng tsa lerata la morao-rao la sesebelisoa le boemo ba lets'oao ba tlhoro moo ho khopamisoa ho utloahala. Ka bomalimabe, esita le lirekoto tse ntle ka ho fetisisa tsa liteipi tsa studio li khona ho fana ka matla a 68 dB feela. Ho thibela ho sotheha ho utloahalang, boemo bo phahameng ka ho fetisisa ba pontšo bo tlalehiloeng teiping ea master ea studio e lokela ho ba le moeli oa tšireletso oa dB tse hlano ho isa ho tse leshome ka tlas'a boemo bo sothehileng bo utloahalang. Sena se fokotsa matla a matla a sebelisoang ho fihla ho 58 dB. Ka hona, sehatisi sa theipi se hlokeha ho hatisa lenaneo la 'mino le nang le mefuta e mengata ea dB ea hoo e ka bang habeli matla a eona. Haeba 'mino o nang le 100 dB dynamic range o rekotiloeng sehatising sa theipi se nang le 60 dB range, ebang ke top 40 dB ea 'mino e tla sotheha ka mokhoa o tšabehang, tlase 40 dB ea' mino e tla patoa ka lerata la theipi ebe e koaheloa, kapa ho tla ba le motsoako oa bobeli. Tharollo ea setso ea indasteri ea ho rekota bothateng bona e bile ho fokotsa ka boomo litaba tse matla tsa 'mino nakong ea ho rekota. Sena se thibela mefuta e fapaneng ea 'mino ho oela ka har'a bokhoni ba sehatisi sa theipi, se lumella melumo e khutsitseng haholo hore e rekote ka holim'a boemo ba lerata la theipi, ha ho ntse ho rekota melumo e phahameng ka maemo a theipi e batlang e le hanyane feela (leha e utloahala) sothile. Lenane le matla la lenaneo le ka fokotsoa ka boomo ka mekhoa e mengata e fapaneng. Mokhanni a ka laela sehlopha sa 'mino oa liletsa hore se se ke sa bapala ka lentsoe le phahameng kapa se khutsitse haholo' me ka hona se hlahise mefuta e fokolang ea matla bakeng sa li-microphone tsa studio. finyelloa ntle le ho thibela libini ho feta tekano, e leng se bakang litšoantšiso tse mpe tsa bonono. Mokhoa o tloaelehileng haholo oa ho fokotsa matla a matla ke oa hore moenjineri oa ho rekota a fetole mofuta oa dynamic ka ho sebelisa taolo ea matsoho le ea othomathiki.

A more common method of reducing the dynamic range is for the recording engineer to modify the dynamic range through the use of manual and automatic gain controls. studying the musical score that a quiet passage is coming, he slowly increases passan as the paste any increases an o prevent its being recorded below the level of the tape noise. If he knows that a loud passage is coming, he slowly reduces the gain as the passage approaches to prevent its overloading the tape and causing severe distortion. By “gain riding” in this manner, the engineer can make substantial changes in dynamics without the average listener perceiving them as such. As the dynamic range is reduced by this technique, how- ever, the recording will not have the excitement of the original live performance. Sensitive listeners can usually sense this deficiency, even though they may not be consciously aware of what is missing. The automatic gain controls consist of electronic signal processing systems called compressors and limiters that modify the signal level recorded on tape. A compressor reduces the dynamic range in a gradual manner by gently reducing the level of loud signals, and/or increasing the level of quieter signals. A limiter acts more drastic- ally to restrict any loud signal that exceeds some preset level. This prevents distortion due to the overloading of the tape on loud program peaks. Another dynamic range modifier is the magnetic tape itself. When tape is driven into saturation by high level signals, it tends to round off the peaks of the signals, and acts as its own limiter by restricting high level signals. This causes some distortion of the signal, but the gradual nature of tape saturation results in a type of distortion which is tolerable to the ear, so the record- ing engineer permits a certain amount of it to occur to keep the entire program as high above the tape noise level as possible and thus obtain a quieter recording. Tape satu- ration results in the loss of the sharp edge of percussive attacks, softening of the strong, biting overtones on instruments, and a loss of definition in loud passages when many instruments are playing together. The result of these various forms of dynamic range reduction through signal “tampering” ke hore melumo e qheletsoe ka thōko kamanong ea eona ea pele e matla. Liphetoho tsa Crescendos le lerata le nang le tlhahisoleseding ea bohlokoa ea 'mino li fokotsehile ka tekanyo, li senya boteng le thabo ea ts'ebetso e phelang.

Tšebeliso e atileng ea ho rekota litheipi tse 16 kapa ho feta e boetse e kenya letsoho mathateng a matla a fapaneng. Ha lipina tse 16 tsa litheipi li kopantsoe hammoho, lerata la tlatsetso la theipi le eketseha ka 12 dB, le fokotsa mefuta e sebetsang ea sehatisi ho tloha ho 60 dB ho isa 48 dB. Ka lebaka leo, moenjiniere oa ho rekota o leka ka matla ho rekota pina e 'ngoe le e' ngoe ka tekanyo e phahameng ka hohle kamoo ho ka khonehang ho fokotsa liphello tsa ho haha ​​​​lerata.

Leha theipi e phethiloeng e ka fana ka mefuta e fapaneng ea matla, 'mino o tlameha ho fetisetsoa ho disc e tloaelehileng e nang le boholo ba 65 dB. Kahoo, re ntse re e-na le bothata ba mefuta e mengata ea 'mino e matla haholo hore e ka khaoloa ho disc e amohelehang khoebong. Ha mmoho le bothata bona ke takatso ea lik'hamphani tsa lirekoto le bahlahisi ba lirekoto hore lirekoto li sehe maemong a holimo kamoo ho ka khonehang, ho etsa hore lirekoto tsa bona li be holimo ho feta tsa bahlolisani ba bona. Haeba lintlha tse ling kaofela li lula li sa fetohe, hangata rekoto e phahameng e utloahala e khanya (le "betere") ka kakaretso ho feta e khutsitseng. Liteishene tsa seea-le-moea li boetse li batla hore lirekoto li khaotsoe ka maemo a holimo e le hore lerata la disc, pops le clicks li se ke tsa utloahala moeeng.

Lenaneo le rekotiloeng le fetisoa ho tloha theiping e kholo ho ea ho master disc ka pene ea ho itšeha e tsamaeang ho tloha ka lehlakoreng le leng ho ea holimo le tlase ha e ntse e ngola li-grooves tsa master disc. Ha lets'oao le phahame, pene e ea hole haholo. Haeba maeto a setaele a le maholo haholo, li-grooves tse bapileng li ka arohana 'me tsa baka khopamiso, molumo oa groove, le ho tlola ho bapala. E le ho qoba sena, li-groove li tlameha ho hasana ka thōko ha lipontšo tsa boemo bo phahameng li khaoloa, 'me sena se fella ka nako e khutšoanyane ea ho bapala bakeng sa lirekoto tse sehiloeng maemong a holimo. Leha li-grooves li sa thekesele, mats'oao a boemo bo holimo haholo a ka baka khopamiso le ho tlolatlola ka lebaka la ho se khonehe ha pene ea ho bapala ho latela maeto a maholo a groove. Le hoja matsoho le lik'hatriji tsa boemo bo holimo li tla latela maeto a maholo, "libapali tsa rekoto" tse theko e tlaase li ke ke tsa khona, 'me record manufac*) dB kapa decibel ke tekanyo ea tekanyo ea molumo o lekanyelitsoeng oa molumo. Hangata e hlalosoa e le phetoho e nyenyane ka ho fetisisa e bonahalang habonolo ea lerata. Sebopo sa kutlo (molumo o fokolang ka ho fetesisa oo u ka o utloang) o ka ba 0 dB, 'me moeli oa bohloko (mabaka ao ka tlhaho o koalang litsebe tsa hau) o ka ba 130 dB boemo ba khatello ea molumo.

Katoloso. Tlhokahalo, Phethahatso

Tlhokahalo ea ho atolosoa ha litsamaiso tsa molumo tsa boleng ke khale e lemohuoa.

Ka bo-1930, ha li-compressor li qala ho fumaneha indastering ea ho rekota, ho amoheloa ha tsona ho ne ho ke ke ha qojoa. Li-compressor li fane ka tharollo e seng e loketse bothata bo boholo ba ho rekota - mokhoa oa ho kenella li-disc, tse neng li ka amohela boholo ba 50 dB feela, lisebelisoa tsa lenaneo moo matla a neng a tloha boemong bo bonolo ba 40 dB ho ea boemong bo phahameng ba 120 dB. Moo maqhubu a phahameng a neng a baka ho khopamisoa ho feteletseng ('me maemo a bonolo a ile a lahleheloa ke lerata le ka morao), compressor joale e ile ea thusa moenjiniere ho etsa hore liphaseje tse phahameng li be bonolo. liphatlalatso tse phahameng ka ho iketsa. Ha e le hantle, 'nete e matla e ile ea fetoloa hore e lumellane le mefokolo ea boemo ba bonono. Haufinyane ho ile ha totobala hore molumo oa 'nete o tsoang lirekotong tsena tse fokolang ka matla o hloka hore ho fetoloe ts'ebetso ea compression - katoloso - ho khutlisa ho nepahala ho matla. Boemo boo bo ntse bo sa fetoha le kajeno. Lilemong tse 40 tse fetileng, ho entsoe boiteko bo bongata ba ho hlahisa lisebelisoa tsa ho atolosa. Maiteko ana e bile a sa phethahalang, ka ho fetisisa. Tsebe e rutehileng, ho bonahala, e batla e mamella liphoso tse hlahang ha ho hatelloa; Leha ho le joalo, liphoso tsa katoloso li bonahala ka ho hlaka. Li kenyelelitse ho pompa, ho se tsitse ha boemo le ho sotha - kaofela ha tsona li sa amohelehe haholo. Ka hona, ho qapa mochine oa ho atolosa boleng bo felisang litla-morao tsena ho ipakile e le sepheo se thata. Leha ho le joalo, pakane eo e se e finyeletsoe. Lebaka leo ka lona re amohelang tahlehelo ea matla a lenaneo ntle le khanyetso ke ka lebaka la 'nete e thahasellisang ea psychoacoustic. Leha melumo e phahameng le melumo e bonolo e hateletsoe ho isa maemong a tšoanang, tsebe e ntse e nahana hore e ka utloa phapang. E etsa joalo - empa, ho thahasellisang, phapang ha e bakoe ke liphetoho tsa boemo empa ke phetoho ea sebopeho sa harmonic Melumo e phahameng hase feela mefuta e matla ea melumo e bonolo. Ha molumo o ntse o eketseha, boholo le matla a li-over-tones li eketseha ka ho lekana. Boiphihlelong ba ho mamela, tsebe e toloka liphapang tsena e le lerata le fetohang. Ke mokhoa ona o etsang hore compression e amohelehe. Ha e le hantle re e amohela hantle hoo, ka mor'a ho ja nako e telele ea molumo o hatelitsoeng, 'mino o phelang ka linako tse ling o makatsa ka phello ea oona. AEC Dynamic Processor e ikhethile ka hore, joalo ka sistimi ea rona ea boko ba tsebe, e kopanya lintlha tse peli tsa sebopeho sa harmonic le ampphetoho ea litude e le mokhoa o mocha o sebetsang ka bonngoe oa ho laola katoloso. Sephetho ke moralo o hlolang litlamorao tse khopisang tse fetileng ho fihlela boemo ba ts'ebetso boo ho seng mohla bo ka khonehang. AEC C-39 e khelosa khatello le ho fokotsa sekhahla se teng hoo e batlang e le lirekotong tsohle ho khutlisa ka bots'epehi bo makatsang lits'ebetso tsa mantlha tsa lenaneo. Ho feta moo, lintlafatso tsena li tsamaisana le phokotso e hlokomelehang ea lerata - ho fokotseha ho hlakileng ha molumo oa mololi, ho rora, ho lla le lerata lohle le ka morao. Advantages ea AEC C-39 e ka etsa phapang ea bohlokoa haholo boiphihlelong ba ho mamela. Liphapang tse matla ke motheo oa lintho tse ngata tse monate le tse hlakisang 'mino. Ho elelloa litlamorao tse felletseng tsa litlhaselo le linako tsa nakoana, ho fumana lintlha tse ngata tse ntle tseo u neng u sa li tsebe le hore li teng lirekotong tsa hau ke ho tsosa thahasello e ncha le ho sibolloa ho hocha ho tsona kaofela.

Likaroloana

• Katoloso e tsoelang pele e fapaneng e khutlisetsa ho fihlela ho 16 dB ea matla ho mohloli ofe kapa ofe oa lenaneo; lirekoto, theipi, kapa oroadcast.
• E fokotsa lerata lohle la maemo a tlase - mololi, ho rora le ho lla. Kakaretso ea mats'oao a ntlafatso ea lerata ho fihla ho 16 dB.
• Khopamiso e tlase haholo.
• E kopanya katoloso e eang holimo le tlase le tlhoro e sa lekanyetsoang ho khutlisa lintlha tsa nakoana le lintlha tse ntle hammoho le liphapang tse hlakileng haholoanyane.
• E bonolo ebile e sebelisoa. Taolo ea katoloso ha e bohlokoa ebile ha ho hlokahale hore tlhophiso e behoe.
• Pontšo ea LED e arabelang ka potlako e latela ts'ebetso ea ts'ebetso ka nepo.
• E ntlafatsa setšoantšo sa stereo le bokhoni ba momameli ba ho khetholla seletsa se seng le se seng kapa lentsoe.
• switjha e nang le maemo a mabeli e laola katoloso ho tsamaisana hantle le lirekoto tse mahareng le tse hatelitsoeng haholo.
• E fihlella tsosoloso e tsotehang ea lirekoto tsa khale.
• E fokotsa mokhathala oa ho mamela maemong a holimo a ho bapala.

Litlhaloso

AEC C-39 Dynamic Processor / Litlhaloso

Re leboha thahasello ea hau ho AEC C-39 Dynamic Processor. Re motlotlo ka sehlahisoa sa rona. Re nahana hore ntle le pelaelo ke eona e atolosang e ntle ka ho fetisisa 'marakeng kajeno. Lilemo tse hlano tsa lipatlisiso tse matla li ile tsa tsoela pele ho e ntlafatsa - phuputso e sa hlahisang theknoloji e ncha feela moralong oa ho atolosa empa e hlahisitse litokelo tse peli tsa litokelo tsa molao, 'me ea boraro e ntse e emetse. Re u khothalletsa hore u bapise AEC C-39 le lisebelisoa leha e le life tse ling tšimong. U tla e fumana e lokolohile ka mokhoa o makatsang oa ho pompa le ho khopama moo likarolo tse ling li utloang bohloko. Ho e-na le hoo u tla utloa tsosoloso e ikhethang le e nepahetseng ea matla a pele le lintlha tse ntle tseo compression e li tlositseng. Re ka thabela ho utloa maikutlo a hau mabapi le sehlahisoa sa rona mme, haeba u na le lipotso tse ling, re ngolle nako efe kapa efe.