Ntuziaka ntuziaka AEC C-39 Dynamic Processor

AEC C-39 Dynamic Processor

Kedu ihe mere oke nso na otu esi eweghachi ya

Na egwu egwu, ọkwa ụda nke fortissimos kachasị na-ada ụda nke otu egwu egwu egwu nwere ike ịdị ihe ruru 105 dB* ọkwa nrụgide ụda, yana ọnụ ọgụgụ kacha elu ọbụna karịa nke ahụ. Otu nkume dị iche iche na-arụ ọrụ ndụ na-agafekarị ọkwa nrụgide ụda 115 dB. N'ụzọ dị iche, ozi egwu dị oke mkpa nwere nkwekọ dị elu nke a na-anụ na ọkwa dị oke ala. Ọdịiche dị n'etiti oke kacha na nke kacha dị jụụ nke egwu ka a na-akpọ dynamic range (kwuru na dB). Dị ka o kwesịrị, ka ịdekọ ụda nke egwu dị ndụ na-agbakwunyeghị mkpọtụ ma ọ bụ mgbagha, usoro ihe ndekọ kwesịrị ịnweta oke ike nke opekata mpe 100 dB n'etiti ụda mkpọtụ ndabere nke akụrụngwa na ọkwa mgbama kacha elu nke mgbagha na-aghọ ụda. Ọ dị nwute, ọbụlagodi ndị na-edekọ teepu studio ọkachamara kachasị mma nwere ike naanị oke ike 68 dB. Iji gbochie mgbagha a na-anụ, ọkwa mgbama kachasị elu edere na teepu master studio kwesịrị inwe oke nchekwa nke ise ruo iri dB n'okpuru ọkwa mgbagha a na-anụ. Nke a na-ebelata oke ike eji arụ ọrụ ruo ụfọdụ 58 dB. Ya mere, a chọrọ onye na-edekọ teepu ka ọ dekọọ mmemme egwu nwere oke ike na dB nke ihe fọrọ nke nta ka ọ bụrụ okpukpu abụọ nke ike ya. Ọ bụrụ na a na-edekọ egwu nwere 100 dB ike dị egwu na teepu teepu nwere oke 60 dB, ma ọ bụrụ na 40 dB kacha elu nke egwu ahụ ga-agbagọ n'ụzọ jọgburu onwe ya, a ga-eli 40 dB nke ala egwu na ụda teepu wee kpuchie ya, ma ọ bụ a ga-enwe ngwakọta nke abụọ. Omenala ụlọ ọrụ na-edekọ ihe na-edozi nsogbu a bụ iji kpachapụrụ anya belata ọdịnaya dị egwu nke egwu ahụ n'oge ndekọ. Nke a na-egbochi oke egwu dị egwu ịdaba n'ike nke onye na-edekọ teepu, na-enye ohere ka edepụta ụda kachasị dị jụụ n'elu ọkwa ụda teepu, ebe ị na-edekọ ụda dị elu na ọkwa dị na teepu nke dị ntakịrị (ọ bụ ezie na ụda) agbagọ. Enwere ike iji ụma belata oke ike nke mmemme n'ụzọ dị iche iche. Onye nduzi nwere ike ịkụziri ndị na-egwu egwu ka ha ghara igwu egwu nke ukwuu ma ọ bụ dị jụụ ma si otú a na-emepụta oke ike maka microphones studio iji bulie Na omume, nke a na-emekarị nke a n'ókè ụfọdụ, mana mbelata achọrọ nke 40 ruo 50 dB enweghị ike. a ga-enweta ya na-egbochighị ndị na-egwu egwu gabiga ókè, na-ebute arụmọrụ na-adịghị mma nke nka. Ụzọ a na-ahụkarị maka ibelata oke ike bụ maka onye injinia na-edekọ ihe iji gbanwee oke ike site na iji akwụkwọ ntuziaka na njikwa uru akpaaka.

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 “tamp"Ering" bụ na ewepụrụ ụda ndị ahụ site na njikọ mbụ ha siri ike. Crescendos na ụda dị iche iche nwere ozi egwu dị mkpa ebelatala n'ọ̀tụ̀tụ̀, na-emebi ọnụnọ na obi ụtọ nke arụmọrụ ndụ.

Ojiji a na-edekọ teepu egwu iri na isii ma ọ bụ karịa na-enyekwara aka na nsogbu nso nso a. Mgbe agwakọtara egwu teepu 16 ọnụ, ụda teepu mgbakwunye na-abawanye site na 16 dB, na-ebelata ike ike nke onye na-edekọ ihe site na 12 dB ruo 60 dB. N'ihi ya, onye injinia na-edekọ ihe na-agbalịsi ike ịdekọ egwu ọ bụla n'ogo dị elu dị ka o kwere mee iji belata mmetụta nke mkpọtụ mkpọtụ.

Ọbụlagodi na teepu nna ukwu emechara nwere ike inye oke ike zuru oke, egwu a ga-emecha bufee ya na diski a na-emebu nke nwere oke ike 65 dB. Ya mere, anyị ka nwere nsogbu nke oke egwu dị egwu nke ukwuu nke ukwuu nke na a gaghị ebipụ ya na diski a na-anabata nke ọma. Ejikọtara ya na nsogbu a bụ ọchịchọ nke ụlọ ọrụ ndị na-edekọ ihe na ndị na-emepụta ihe na-edekọ ihe na-eme ka a na-egbutu ihe ndekọ dị elu dị ka o kwere mee, iji mee ka ndekọ ha dị elu karịa nke ndị asọmpi ha. Ọ bụrụ na ihe ndị ọzọ niile na-adịgide adịgide, ndekọ na-ada ụda n'ozuzu na-ada ụda (ma "mma") n'ozuzu ya karịa nke dị jụụ. Ụlọ ọrụ redio na-achọkwa igbutu ndekọ na ọkwa dị elu nke mere na ụda elu diski, pop na clicks ga-abụ nke a na-anụghị na ikuku.

A na-ebufe ihe omume a na-edekọ site na teepu nna ukwu gaa na diski ukwu site na stylus ịkpụ nke na-esi n'akụkụ ruo n'akụkụ na elu na ala ka ọ na-edepụta oghere nke diski ukwu. Ka ọkwa mgbaàmà dị elu, ka stylus na-aga n'ihu. Ọ bụrụ na njem nlegharị anya stylus dị oke oke, oghere ndị dị n'akụkụ nwere ike ibelata n'ime ibe ha na-akpata mgbagha, nkwughachi nkwughachi, na ịwụgharị na ịkpọgharị. Iji zere nke a, a ghaghị ịgbasa oghere ndị dịpụrụ adịpụ mgbe a na-egbutu akara ngosi dị elu, nke a na-eme ka oge egwu dị mkpirikpi maka ihe ndekọ na-egbutu na ọkwa dị elu. Ọbụlagodi na oghere ndị ahụ anaghị emetụ ibe ha aka n'ezie, akara ngosi dị elu nwere ike ịkpata mgbagha na ịwụ elu n'ihi enweghị ike nke stylus playback soro njem njem dị ukwuu. Ọ bụ ezie na ogwe aka dị elu na cartridges ga-agbaso nnukwu njem nlegharị anya, "ndị na-egwu ndekọ" ọnụ ala agaghị adị ọnụ ala, na ndekọ manufac *) dB ma ọ bụ decibel bụ ihe nleba anya maka ụda olu dị ntakịrị. A na-akọwakarị ya dị ka mgbanwe ụda olu kacha nta na-adị mfe ịchọpụta. Nzọcha mkpụrụ nke ịnụ ihe (ụda kacha daa mbà n'obi ị nwere ike ịghọta) bụ ihe dịka 0 dB, na ọnụ ụzọ mgbu (ebe ị na-ekpuchi ntị gị n'ime mmụọ) bụ ihe dịka 130 dB ọkwa nrụgide ụda.

Mgbasawanye. Mkpa, mmezu

Ogologo oge achọpụtala mkpa mgbasawanye na sistemụ ọdịyo dị mma.

N'afọ ndị 1930, mgbe mbụ compressors malitere maka ụlọ ọrụ na-edekọ ihe, nnabata ha bụ ihe a na-apụghị izere ezere. Compressors nyere ihe ngwọta dị njikere maka nnukwu nsogbu ndekọ ndekọ - otu esi adaba na diski, nke nwere ike ịnakwere oke kachasị nke naanị 50 dB, ihe mmemme ebe ihe mgbagwoju anya sitere na ọkwa dị nro nke 40 dB ruo ọkwa dị elu nke 120 dB. N'ebe ọkwa dị elu na mbụ kpatara mgbagha karịrị akarị (na ọkwa dị nro na-efunarị n'azụ mkpọtụ), kọmpụta na-enyere onye injinia aka ime ka ụda olu dị nro ma dị nro. na-ada ụda na-akpaghị aka. Dị ka a pụrụ isi kwuo ya, a gbanwere eziokwu dị ike ka ọ dabara na njedebe nke steeti nka. N'oge na-adịghị anya, ọ bịara pụta ìhè na ụda ezi uche dị na ya sitere na ndekọ ndị a na-akpachapụ anya chọrọ mgbanwe nke usoro mkpakọ - mgbasawanye - iji weghachite izi ezi dị ike. Ọnọdụ ahụ agbanwebeghị taa. N'ime afọ 40 gara aga, a na-eme ọtụtụ mgbalị ịmepụta ndị na-agbasawanye. Mgbalị ndị a ezughị okè, ọ kacha mma. Ntị gụrụ akwụkwọ, o yiri ka ọ na-anabatatụ mmejọ ndị na-eme na mkpakọ; Otú ọ dị, mmejọ mgbasawanye na-apụta ìhè nke ọma. Ha gụnyere ịgbapụta mmiri, enweghị ntụkwasị obi larịị na mgbagha - ihe niile anaghị anabata nke ukwuu. Ya mere, imepụta ihe mgbasawanye dị mma nke na-ewepụ mmetụta ndị a egosila na ọ bụ ihe mgbaru ọsọ na-enweghị atụ. Otú ọ dị, e mezuwo ihe mgbaru ọsọ ahụ ugbu a. Ihe mere anyị ji anabata mfu nke mmemme mmemme na-enweghị mgbagha bụ n'ihi eziokwu psychoacoustic na-adọrọ mmasị. Ọ bụ ezie na ụda olu na ụda dị nro ejikọtawo na ọkwa ndị yiri ya, ntị ka na-eche na ọ nwere ike ịchọpụta ọdịiche. Ọ na-eme - mana, n'ụzọ na-akpali mmasị, ihe dị iche abụghị n'ihi mgbanwe nke ọkwa mana na mgbanwe n'usoro nhazi ụda ụda abụghị naanị ụdị siri ike nke ụda dị nro. Ka olu na-abawanye, ọnụọgụ na ike nke oke ụda na-abawanye nke ọma. Na ahụmihe ige ntị, ntị na-akọwa ọdịiche ndị a ka ụda olu na-agbanwe. Ọ bụ usoro a na-eme ka mkpakọ dị mma. N'ezie, anyị na-anabata ya nke ọma na, mgbe nri ogologo oge nke ụda mgbagwoju anya, egwu ndụ na-awụ akpata oyi mgbe ụfọdụ na mmetụta ya. The AEC Dynamic Processor bụ ihe pụrụ iche na, dị ka usoro ụbụrụ ntị anyị, ọ na-ejikọta ma ozi nhazi usoro na ampmgbanwe litude dị ka ụzọ ọhụrụ na nke dị irè maka ịchịkwa mgbasawanye. Ihe si na ya pụta bụ imewe nke na-emeri mmetụta ndị na-akpasu iwe gara aga iji nweta ọkwa nke arụmọrụ mgbe ọ bụla o kwere omume. AEC C-39 na-atụgharị mkpakọ na ọnụ ọgụgụ kasị elu dị ugbu a na ihe fọrọ nke nta ka ọ bụrụ ndekọ niile iji weghachi n'ụzọ dị ịrịba ama usoro mmemme mbụ. Na mgbakwunye, nkwalite ndị a na-esonyere na mbelata mkpọtụ pụtara ìhè - mbelata nrịbama, mkpọtụ, iwe na mkpọtụ azụ niile. Onye advantages nke AEC C-39 nwere ike ime mgbanwe dị ịrịba ama na ahụmahụ ige ntị. Ọdịiche dị egwu bụ isi ihe na-atọ ụtọ ma na-egosipụta na egwu. Ịghọta mmetụta zuru oke nke mwakpo na ndị na-agafe agafe, ịchọpụta ọtụtụ nkọwa zuru oke nke ị maghị na ọ dị adị na ndekọ gị bụ ịkpali ma mmasị ọhụrụ na nchọpụta ọhụrụ n'ime ha niile.

Atụmatụ

• Mgbasawanye mgbanwe na-aga n'ihu na-eweghachi ihe ruru 16 dB nke ike na isi mmalite mmemme ọ bụla; ndekọ, teepu, ma ọ bụ okwu mgbasa ozi.
• Na-ebelata mkpọtụ ndabere ọ bụla dị ala nke ọma - nhịahụ, mkpọmkpọ na iwe. Mgbama n'ozuzu maka nkwalite mkpọtụ ruru 16 dB.
• Mgbagọ dị ala pụrụiche.
• Na-ejikọta mgbasawanye elu na mgbada na ọnụ ọgụgụ kasị elu na-enweghị njedebe iji weghachi oge na-agafe agafe na nkọwa dị mma yana ọdịiche dị ike karịa.
• Haziri ma jiri ya mee ihe ngwa ngwa. Njikwa mgbasawanye abụghị ihe dị mkpa na nhazigharị adịghị mkpa.
• Ngosipụta ikanam na-aza ọsọ ọsọ na-agbaso usoro nhazi.
• Na-akwalite onyonyo stereo yana ikike onye na-ege ntị ịmata ọdịiche nke ngwa ma ọ bụ olu ọ bụla.
• Njikwa mgbafe mkpọda ọnọdụ abụọ ka ọ dabara nke ọma ma nkezi na ndekọ nke ukwuu.
• Na-enweta mweghachi dị egwu nke ndekọ ochie.
• Na-ebelata ike ọgwụgwụ ige ntị n'ogo dị elu.

Nkọwapụta

AEC C-39 Dynamic Processor / Nkọwapụta

Daalụ maka mmasị gị na AEC C-39 Dynamic Processor. Anyị na-anya ngwaahịa anyị. Anyị na-eche na ọ bụ ihe ịrụ ụka adịghị ya na ọ bụ kasị mma expander na ahịa taa. Afọ ise nke nyocha kpụ ọkụ n'ọnụ gara n'ime mmepe ya - nchọpụta nke na-abụghị nanị na-emepụta nkà na ụzụ ọhụrụ na nhazi nke mgbasawanye ma rụpụtara ikike ikike abụọ nyere, na nke atọ na-echere. Anyị na-agba gị ume ka tụnyere AEC C-39 na ihe ọ bụla ọzọ expander na ubi. Ị ga-ahụ na ọ bụ n'ụzọ dị egwu na-enweghị mgbapụta na mgbagha nke nkeji ndị ọzọ na-ata ahụhụ. Kama ị ga-anụ a pụrụ iche na ezi mweghachi nke mbụ ike na ezi nkọwa nke mkpakọ wepụrụ. Obi ga-adị anyị ụtọ ịnụ mmeghachi omume nke gị na ngwaahịa anyị yana, ọ bụrụ na ị nwere ajụjụ ndị ọzọ, detara anyị akwụkwọ n'oge ọ bụla.