{"id":4311,"date":"2018-11-12T01:00:08","date_gmt":"2018-11-11T22:00:08","guid":{"rendered":"http:\/\/www.ufukonen.com\/tr\/?p=4311"},"modified":"2018-11-24T19:34:40","modified_gmt":"2018-11-24T16:34:40","slug":"monitor-kalibrasyon-seviyeleri-2","status":"publish","type":"post","link":"https:\/\/www.ufukonen.com\/tr\/monitor-kalibrasyon-seviyeleri-2.html","title":{"rendered":"Monit\u00f6r Kalibrasyon Seviyeleri \u00dczerine… (2. B\u00f6l\u00fcm)"},"content":{"rendered":"

\"\"<\/p>\n

Bu yaz\u0131 dizisi \u00fc\u00e7 b\u00f6l\u00fcmden olu\u015fmaktad\u0131r. Birinci b\u00f6l\u00fcm i\u00e7in t\u0131klay\u0131n\u0131z<\/a>. \u00dc\u00e7\u00fcnc\u00fc b\u00f6l\u00fcm i\u00e7in t\u0131klay\u0131n\u0131z<\/a>.<\/p>\n

 <\/p>\n

\u00c7eli\u015fki<\/h3>\n

Yap\u0131lan hatan\u0131n fark edilmesinden sonra -20 dBFS = 83 dBC (ya da -18 dBFS = 85 dBC) olarak kabul edilen ve Tomlinson Holman ile Bob Katz taraf\u0131ndan da bu \u015fekilde oldu\u011fu \u00f6ne s\u00fcr\u00fclen referans seviyesinin son y\u0131llardaki kalibrasyon uygulamalar\u0131yla ters d\u00fc\u015ft\u00fc\u011f\u00fcn\u00fc g\u00f6zlemledim. G\u00f6rd\u00fc\u011f\u00fcm, okudu\u011fum ve ara\u015ft\u0131rd\u0131\u011f\u0131m kadar\u0131yla kalibrasyon seviyesi olarak -20 dBFS = 85 dBC referans al\u0131n\u0131yor.<\/p>\n

Ara\u015ft\u0131rmaya devam ettim. SMPTE (Society of Motion Picture and Television Engineers) sunumlar\u0131n\u0131n birinde Brian Vessa (Sony Digital Audio Mastering birimi y\u00f6neticisi) referans seviyesinin -20 dBFS = 85 dBC oldu\u011funu belirtmi\u015f.<\/p>\n

Pink noise | -20 dBFS = 85 dBC (slow response)<\/p>\n

 <\/p>\n

Daha sonra Tomlinson Holman’\u0131n 5.1 Surround System: Up and Running<\/em> adl\u0131 kitab\u0131n\u0131n 2008 y\u0131l\u0131nda yay\u0131mlad\u0131\u011f\u0131 ikinci bas\u0131m\u0131n\u0131 inceledim. Holman, 2000 y\u0131l\u0131nda \u00e7\u0131kan ilk bas\u0131mdaki -20 dBFS = 83 dBC olarak belirtti\u011fi referans seviyesini ikinci bas\u0131mda herhangi bir a\u00e7\u0131klama yapmadan -20 dBFS = 85 dB SPL olarak de\u011fi\u015ftirmi\u015f (her ikisi de C-Weighting, slow response).<\/p>\n

Pink noise | -20 dBFS = 85 dBC (slow response)<\/p>\n

 <\/p>\n

Buna kar\u015f\u0131l\u0131k Bob Katz’\u0131n sitesindeki makalelerinde referans seviyesi ile ilgili herhangi bir de\u011fi\u015fiklik ya da g\u00fcncelleme yok.<\/p>\n

 <\/p>\n

\"\"

Surround Sound: Up and Running – 2000 (sol) ve 2008 (sa\u011f) bas\u0131m\u0131<\/p><\/div>\n

 <\/p>\n

NTi, XL2 cihaz\u0131nda kullan\u0131lan Cinema Meter eklentisinin kullan\u0131m k\u0131lavuzunda referans seviyesini -20 dBFS = 85 dBC olarak belirtiyor.<\/p>\n

Netflix de “theatretical” (film standard\u0131nda) yap\u0131lan miksler i\u00e7in referans seviyesini -20 dBFS = 85 dBC olarak kabul ediyor.<\/p>\n

Bu asl\u0131nda olduk\u00e7a kafa kar\u0131\u015ft\u0131r\u0131c\u0131 bir durum. Ara\u015ft\u0131rmaya biraz daha devam edince en mant\u0131kl\u0131 a\u00e7\u0131klamay\u0131 Meyer Sound’dan Peter Soper’\u0131n yazd\u0131\u011f\u0131 “Calibrating Cinema Sound Systems” ba\u015fl\u0131kl\u0131 teknik raporda buldum. Kabaca \u00f6zetleyecek olursak Soper raporunda \u015funu s\u00f6yl\u00fcyor: Her pink noise ya da referans i\u00e7in kullan\u0131lan her test tonu ayn\u0131 de\u011fil!<\/p>\n

 <\/p>\n

Her Pink Noise Ayn\u0131 De\u011fil!<\/h3>\n

Soper’in raporu \u00fczerinden durumu biraz daha detayl\u0131 bir \u015fekilde a\u00e7\u0131klamaya \u00e7al\u0131\u015fay\u0131m… Neredeyse 0 dBFS’e dokunan ama k\u0131rp\u0131lmaya (clipping) girmeyen bir sin\u00fcs dalgas\u0131n\u0131 ele alal\u0131m. Bu dalga 100% (tam) mod\u00fclasyon kriterine uyuyor ancak bu dalgan\u0131n RMS de\u011feri \u00f6l\u00e7\u00fcld\u00fc\u011f\u00fcnde tam mod\u00fclasyona g\u00f6re 3 dB a\u015fa\u011f\u0131da \u00e7\u0131k\u0131yor. Tek frekansa (\u00f6rne\u011fin 1 kHz) sahip bu sinyalin peak ve RMS de\u011ferleri aras\u0131ndaki bu 3 dB’lik fark, bu sin\u00fcs dalgas\u0131n\u0131n 3 dB crest factor’a sahip oldu\u011funu g\u00f6steriyor.<\/p>\n

%100 mod\u00fclasyona sahip bu sinyalin seviyesini %10 azaltt\u0131\u011f\u0131m\u0131zda sinyalin peak de\u011feri -20 dBFS, RMS de\u011feri ise -23 dBFS oluyor.<\/p>\n

Tek frekansa sahip basit dalgalarda crest factor sabit olarak 3 dB ancak di\u011fer yandan pink noise i\u00e7in durum farkl\u0131. Pink noise, yakla\u015f\u0131k 10-16 dB aras\u0131nda de\u011fi\u015fken crest factor de\u011ferlerine sahip.<\/p>\n

Soper, Meyer Sound olarak bunlar\u0131 g\u00f6z \u00f6n\u00fcne alarak -20 dBFS seviyesinde bir referans sinyali haz\u0131rlad\u0131klar\u0131n\u0131 s\u00f6yl\u00fcyor. Bu sinyali haz\u0131rlarken pink noise sinyalinin seviyesini ‘true RMS’ metodu ile \u00f6l\u00e7erek referans sin\u00fcs dalgas\u0131n\u0131n -23 dBFS RMS de\u011ferine g\u00f6re kalibre etmi\u015fler. Ayn\u0131 zamanda pink noise sinyalinin crest factor’\u00fcn\u00fc 12.3 dB’ye sabitlemi\u015fler. Bunlar\u0131n sonucunda Meyer Sound -20 dBFS referans sinyali ortaya \u00e7\u0131km\u0131\u015f.<\/p>\n

Soper’in raporundan anl\u0131yoruz ki her pink noise ya da referans i\u00e7in kullan\u0131lan her test tonu ayn\u0131 de\u011fil!<\/p>\n

 <\/p>\n

Bu yaz\u0131 dizisi \u00fc\u00e7 b\u00f6l\u00fcmden olu\u015fmaktad\u0131r. Birinci b\u00f6l\u00fcm i\u00e7in t\u0131klay\u0131n\u0131z<\/a>. \u00dc\u00e7\u00fcnc\u00fc b\u00f6l\u00fcm i\u00e7in t\u0131klay\u0131n\u0131z<\/a>.<\/p>\n

Ses bas\u0131n\u00e7 seviyesi \u00f6l\u00e7\u00fcmleri ve A\/C Weighting dengeleri ile ilgili olarak “Ses Bas\u0131n\u00e7 Seviyesi \u00d6l\u00e7\u00fcmleri: A-Weighting ve C-Weighting Dengeleri<\/a>” ba\u015fl\u0131kl\u0131 yaz\u0131m\u0131 okuyabilirsiniz.<\/p>\n

Monit\u00f6r kalibrasyonu i\u00e7in “St\u00fcdyo Monit\u00f6rleri Nas\u0131l Kalibre Edilir?<\/a>” ba\u015fl\u0131kl\u0131 yaz\u0131m\u0131 okuyabilirsiniz.<\/p>\n

Headroom ve seviyeler ile ilgili olarak “Headroom Nedir ve Neden \u00d6nemlidir?<\/a>” ba\u015fl\u0131kl\u0131 yaz\u0131m\u0131 okuyabilirsiniz.<\/p>\n

 <\/p>\n

Teknik terimler i\u00e7in m\u00fczik teknolojisi, m\u00fczik prod\u00fcksiyonu ve ses kay\u0131t terimleri s\u00f6zl\u00fc\u011f\u00fcne<\/a> g\u00f6z atabilirsiniz.<\/p>\n

Benzer payla\u015f\u0131mlar i\u00e7in beni Facebook<\/a> ve Twitter<\/a>‘da takip edebilir, haberler i\u00e7in mesaj listeme \u00fcye olabilirsiniz<\/a>. Te\u015fekk\u00fcrler.<\/p>\n

Ba\u015fl\u0131k foto\u011fraf\u0131: Chris Sansbury<\/a> | Pixabay<\/a><\/p>\n

\u00a9 2018 Ufuk \u00d6nen. Her hakk\u0131 sakl\u0131d\u0131r. \u0130zinsiz kullan\u0131lamaz.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Bu yaz\u0131 dizisi \u00fc\u00e7 b\u00f6l\u00fcmden olu\u015fmaktad\u0131r. Birinci b\u00f6l\u00fcm i\u00e7in t\u0131klay\u0131n\u0131z. \u00dc\u00e7\u00fcnc\u00fc b\u00f6l\u00fcm i\u00e7in t\u0131klay\u0131n\u0131z.   \u00c7eli\u015fki Yap\u0131lan hatan\u0131n fark edilmesinden…<\/p>\n","protected":false},"author":2,"featured_media":4328,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[18],"tags":[],"jetpack_featured_media_url":"https:\/\/www.ufukonen.com\/tr\/wp-content\/uploads\/Monitor_Kalibrasyon_Seviyeleri_2.jpg","jetpack_publicize_connections":[],"jetpack_shortlink":"https:\/\/wp.me\/p3rjsG-17x","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":4313,"url":"https:\/\/www.ufukonen.com\/tr\/monitor-kalibrasyon-seviyeleri-3.html","url_meta":{"origin":4311,"position":0},"title":"Monit\u00f6r Kalibrasyon Seviyeleri \u00dczerine… (3. B\u00f6l\u00fcm)","date":"November 19, 2018","format":false,"excerpt":"Bu yaz\u0131 dizisi \u00fc\u00e7 b\u00f6l\u00fcmden olu\u015fmaktad\u0131r. Birinci b\u00f6l\u00fcm i\u00e7in t\u0131klay\u0131n\u0131z. \u0130kinci b\u00f6l\u00fcm i\u00e7in t\u0131klay\u0131n\u0131z. \u00a0 K\u00fc\u00e7\u00fck St\u00fcdyolar, Televizyon ve Video \u0130\u00e7in Kalibrasyon Seviyeleri K\u00fc\u00e7\u00fck st\u00fcdyolar ve evler i\u00e7in haz\u0131rlanan televizyon ve video programlar\u0131 i\u00e7in kalibrasyon seviyeleri biraz daha farkl\u0131. 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