CHARIO ACADEMY SERENDIPITY

Academy Serendipity, duk da kasancewarsa sama da shekaru goma, ba wai kawai ya rage a cikin sadaukarwar Chario ba, amma har yanzu yana kan kololuwar sa. Wannan ƙirar lasifikar iri ɗaya ce, ko da yake ta samo asali ne daga nassoshi na farko na Chario, Kwalejin Millennium Grand jawabai. A cewar masana'anta, Serendipity shine ƙarshen kwarewa da zato da aka tattara tun farkon wanzuwar kamfanin, watau. tun 1975. Ana ɓoye mafi girman ƙimar sauti a cikin tsari na musamman wanda ba za a iya gano shi kawai tare da adadin masu magana ba. da nau'ikan su daban-daban, amma tare da hanyar da suke hulɗa a waje da tsarin "multipath" na al'ada.

Jikin yana kama da babban sandar katako, amma wannan wani bangare ne kawai.

Don haka, gefen gefe da saman bangon an yi su ne da allunan, yayin da gaba, baya da ƙarfafawar ciki an yi su da fiberboard. Akwai da yawa daga cikinsu, musamman a cikin sashin subwoofer, inda akwai makamashi mai yawa da ya rage don damping, yayin da a cikin sauran suna aiki a matsayin bangare, samar da ɗakunan sauti masu zaman kansu da ke aiki a cikin ƙananan sassa daban-daban. Gabaɗayan tsarin a zahiri an raba shi zuwa sassa biyu, sama ko ƙasa daidai da tsayi. A kasa akwai sashin subwoofer, kuma a saman akwai sauran direbobi hudu. Chario ba ya yin la'akari da rawar da itacen halitta ke da shi wajen samun sautin yanayi, duk da haka yana mai da hankali ga ra'ayin baiwa masu magana rawar "kayan aiki"; ginshiƙi ya kamata ya fuskanci, kuma ba wasa ba - waɗannan abubuwa ne daban-daban. Itacen, duk da haka, yana da ma'auni masu kyau na inji, kuma mafi mahimmanci ... bi da su ta wannan hanya, yana da kyau.

Hanya biyar don takamaiman dalilai

Yarjejeniyar bangarorin biyar ba kasafai ba ce. Ko da mun ƙara nuances kuma, la'akari da wasu zato, yarda cewa wannan tsari ne na hudu da rabi (wanda zai dagula bincike har ma ...), muna hulɗar da zane wanda ya wuce nisa. fiye da tsare-tsaren da sauran masana'antun ke amfani da su. Ƙirƙirar da’irori na multiband ana tilastawa ta hanyar rashin iya lasifikar ɗaiɗaikun lasifika – ko ma nau’i-nau’i na nau’ikan direbobi daban-daban (a cikin da’irori biyu) – don ƙirƙirar na’urar lasifikar da za ta samar da faffadan bandwidth, babban ƙarfi da ƙarancin murdiya. Amma rarraba zuwa jeri uku - wanda ake kira bass, midrange da treble - ya isa don cimma kusan kowane sigogi na asali (masu magana da aka tsara don amfanin gida). Ƙarin haɓakawa na iya zama saboda niyya don cimma wasu takamaiman halayen sonic da kaddarorin. Wannan shi ne daidai yadda yake aiki.

Ana amfani da tsarin mai magana mai yawa na Serendipity ba wai kawai don haɓaka aiki na kowane yanki na kewayon sauti ta ƙwararrun masu fassarawa ba, amma kuma, a zahiri, don amfani da tasirin "gefe" sakamakon amfani da tsarin multiband, waɗanda suke ana ɗaukar cutarwa ga sauran masana'antun kuma an rage su zuwa matsakaicin. yiwuwar digiri. Maginin Serendipity yana motsawa ta madaidaicin shugabanci zuwa magini kamar Cabas, wanda, tare da taimakon tsarin mai da hankali, yana ƙoƙarin cimma tasirin "ƙwallo mai bugun jini", tushen madaidaicin kowane mitoci, yana haskaka irin wannan sifa a. mafi faɗin kwana mai yiwuwa a cikin kowane jirgin sama (wanda shine makasudin tsarin tattara hankali duk masu juyawa). Matsar da masu fassara daga juna yana haifar da canji a cikin halaye a waje da babban axis (musamman a cikin jirgin sama na tsaye wanda wannan ƙaura ya faru). Ko da waɗannan alamun sun bayyana akan halaye da gatura waɗanda suka wuce wurin sauraron, raƙuman ruwa da ke tafiya a cikin waɗannan kwatancen daga bangon ɗakin kuma za su kai ga mai sauraro kuma za su yi nauyi fahimtar ma'aunin tonal na duka hoton. . Sabili da haka, bisa ga yawancin masana'antun, yana da mahimmanci don kula da kwanciyar hankali, dangane da mita, abin da ake kira amsawar karfi.

A daya hannun, wadannan m attenuations za a iya la'akari a matsayin mai kyau dama don rage girman da nuna tãguwar ruwa, wato, don rage tunani da kuma gudunmawar su ga halittar image a wurin sauraro. Idan muka kalli Serendipity, ba mu ga wasu “anantattun abubuwan da ba a sani ba” a cikin tsarin lasifikar. Tweeter yana kusa da tsakiyar tsakiya, wanda yake kusa da tsakiyar tsakiya na biyu (tace kadan kadan), wanda, bi da bi, yana kusa da bass. Duk da haka, ga fairly short tsakiyar mita tãguwar ruwa, wanda zai zama crossover mitoci a nan, ko da irin nisa tsakanin transducers nufin cewa a kusurwoyi da dama digiri, har ma fiye da haka - da dama dubun, zurfin attenuations bayyana a kan halaye. Faɗin su ya dogara ne da gangaren gangaren halayen sassan guda ɗaya, waɗanda ke da alaƙa da kusanci da yadda masu magana ke aiki tare.

Anan ya zo wani yanki na wuyar warwarewa, wato amfani da tacewa mai laushi. Abu na gaba shine saita mitar crossover kusa da juna - tsakanin bass da biyu na woofers na tsakiya shine kusan 400 Hz, kuma tsakanin tsakiyar (mafi tacewa) da tweeter - ƙasa da 2 kHz. Bugu da kari, akwai hadin gwiwa tsakanin biyu na matsakaicin direbobi (in ba haka ba tace, amma halayen su kwanta kusa da juna a kan wani sosai m kewayon, da kuma ƙananan tace midrange ma mu'amala da tweeter) kuma, a ƙarshe, muna da yawa. haɗe-haɗe da haɗe-haɗe. Yana da matukar wuya a ƙayyade halayen da ake tsammani (ba dole ba ne na layi) na maginin kawai tare da babban axis a cikin irin wannan yanayin, kuma ba shi yiwuwa a cimma kwanciyar hankali a manyan kusurwoyi. Duk da haka, zanen Chario ya so ya cimma irin wannan sakamako - ya kira shi "ado": attenuation na radiation daga babban axis, a cikin wani jirgin sama a tsaye, don rage tunani daga bene da rufi.

Kanfigareshan Woofer

Wani takamaiman bayani har yanzu yana da alaƙa da sarrafa tunani shine daidaitawar lasifikar a cikin kewayon subwoofer. Sashen, wanda masana'anta ke kira da sub, yana a kasan tsarin. Ma'anar a nan ba ta cikin sauran siffofi (wanda za a tattauna daga baya), amma a cikin gaskiyar cewa tushen radiation yana tsaye a saman bene (zamu iya ganin "tagagi" mai inuwa na ginshiki, facade da bangon gefe). Bi da bi, woofer ya bar kamfanin daga bene zuwa matsakaicin, madaidaicin yayi kama da sanannen abin da ake kira. isophonic masu lankwasa, amma wannan baya biyowa daga (ma) mai sauƙi na ƙarshe cewa dole ne mu "gyara" kaddarorin jin mu ta wannan hanya (wanda ba mu gyara tare da kowane kayan ji yayin sauraron sautunan yanayi da kiɗan raye-raye). Bukatar wannan gyara Chario ya samo asali ne daga yanayi daban-daban da muke sauraron kiɗa - kai tsaye da kuma a gida, daga masu magana guda biyu. Lokacin sauraron kai tsaye, tãguwar ruwa kai tsaye da kuma bayyananniyar raƙuman ruwa suna isa gare mu, waɗanda tare suka haifar da abin kallo na halitta. Hakanan akwai tunani a cikin ɗakin sauraron, amma suna da illa (saboda haka Chario yana rage su ta hanyar amfani da hanyoyin da aka bayyana a sama), saboda. haifar da tasiri daban-daban, ba sake haifar da yanayin sauti na rikodin kwata-kwata ba, amma sakamakon yanayin sauti na ɗakin sauraron. An lulluɓe ɓangarori na ainihin sarari na rikodin a cikin sautin da aka kunna ta cikin lasifika a madaidaiciyar kalaman tafiya (misali reverberation). Abin baƙin cikin shine, suna zuwa ne kawai daga gefen lasifikar, kuma ko da canje-canje na lokaci wanda zai iya fadadawa da zurfafa sararin samaniya ba zai daidaita yanayin gaba daya ba. Dangane da binciken Chario, hasashe namu yana mai da hankali sosai kan mitoci na tsakiya, wanda saboda haka yana buƙatar ragewa zuwa wani matsayi don samun mafi kyawun yanayin yanayin yanayin sauti duka, duka a cikin tonal da sararin samaniya.

Idan daya ya ja sai dayan ya tura

Tsarin sashin subwoofer na Serendipity wani babi ne a kanta. Anan muna fuskantar tsarin turawa, wanda ba kasafai ake amfani da shi a yau ba (a wata ma'ana mai fa'ida, wanda ake kira fili ko isobaric). Wannan nau'i-nau'i ne na woofers da aka haɗa ta hanyar injiniya "diaphragm zuwa diaphragm" da kuma ta hanyar lantarki ta hanyar da diaphragms ɗin su ke tafiya a hanya guda (dangane da jiki, ba kwanduna guda ɗaya ba). Sabili da haka, waɗannan matakan ba sa damfara iskar da ke rufe tsakanin su (don haka sunan isobaric), amma motsa shi. Don yin wannan, idan suna da tsari iri ɗaya daidai kuma jujjuyawar sun sami rauni a cikin hanya guda, dole ne a haɗa su gaba ɗaya (da juna) polarities (ta sanya alamar ƙarshensu) ta yadda a ƙarshe zasu yi aiki a lokaci ɗaya (lokacin da aka haɗa su). nada yana zurfafa daya) a cikin tsarin maganadisu, coil na ɗayan yana fita). Saboda haka sunan tura-pull - lokacin da mai magana ɗaya ya "ja", ɗayan "turawa", amma har yanzu suna aiki a cikin hanya guda. Wani bambanci akan wannan tsari shine tsarin magnet-to-magnet, kuma wani wanda ke aiki tare da ainihin tasirin sonic iri ɗaya shine tsarin da ake sanya masu magana ɗaya a bayan ɗayan a hanya ɗaya (maganin na waje kusa da magnet). budewar ciki). Sa'an nan kuma ya kamata a haɗa masu magana a cikin polarity ɗaya - irin wannan tsarin, ko da yake har yanzu "isobaric", ya kamata a daina kiran tura-pull, amma, mai yiwuwa, fili.

Zan rubuta game da ƙananan bambance-bambance tsakanin waɗannan zaɓuɓɓuka a ƙarshe, amma menene babban fa'idar wannan tsarin? A kallo na farko, wannan saitin na iya zama kamar yana ƙara matsi da lasifikan biyu ke haifarwa. Amma ba kwata-kwata - a, irin wannan tsarin yana da iko sau biyu (ana ɗaukar shi ta hanyar coils biyu, ba ɗaya ba), amma yana da rabin tasiri ("bangaren" na biyu na ikon da aka ba da lasifika na biyu baya ƙara matsa lamba). . Don haka me yasa muke buƙatar irin wannan maganin rashin inganci? Yin amfani da direbobi biyu a cikin tsarin turawa (composite, isobaric) yana haifar da nau'in direba guda ɗaya tare da sigogi daban-daban. Idan muka ɗauka cewa ya ƙunshi nau'ikan transducers guda biyu, Vas zai ragu kuma fs ba zai karu ba, saboda muna da ma'aunin girgiza sau biyu; Qts ma baya karuwa, saboda muna da "drive" sau biyu. Summa summarum, yin amfani da tura-pull yana ba ku damar ninka ƙarar ƙarar majalisar (tsari da yawa - ciki har da rufaffiyar, bass-reflex, bandpass, amma ba layin watsawa ko majalisar kaho) don samun takamaiman halaye, idan aka kwatanta da yin amfani da lasifika guda ɗaya (o sigogi iri ɗaya, kamar tare da lasifikar bugun bugun jini).

Saboda wannan, tare da ƙarar da ba haka ba (Ina tunatar da ku cewa babban tsarin yana hidimar wasu sassan), mun sami ƙarancin yankewa (-6 dB a 20 Hz).