{"version":"1.0","provider_name":"Milvis","provider_url":"http:\/\/milvis.lt","author_name":"Milvis","author_url":"http:\/\/milvis.lt\/author\/admin\/","title":"Garso kokyb\u0117s FLAC bei MP3 palyginimas","html":"Nutariau para\u0161yti apie tai kuo skiriasi taip i\u0161populiar\u0117j\u0119 mp3 muzikos failai nuo lossless fail\u0173 wav ar flac.\r\n\r\nBandomas muzikinis k\u016brinys 4min:16s\r\n\r\nFLAC 32,5MB\r\n\r\nWAV 43.1MB\r\n\r\nMP3 320 (auk\u0161\u010diausia \u012fmanoma mp3 kokyb\u0117) 9.79MB<!--more-->\r\n\r\nGarso analiz\u0117 atlikta Cool Edit 2 pro garso apdorojimo programa.\r\nTrumpai apie pagrindinius steb\u0117tus parametrus:\r\n\r\n1. Atkuriam\u0173 da\u017eni\u0173 juosta (audio-CD diskuose \u012fra\u0161ai atkuriami gan pla\u010dioje 0 Hz - 22 000 Hz da\u017eni\u0173 juostoje):\r\n\r\n<a href=\"http:\/\/milvis.lt\/wp-content\/uploads\/2009\/10\/dazniu-juosta.PNG\"><img class=\"alignnone size-full wp-image-1042\" title=\"dazniu juosta\" src=\"http:\/\/milvis.lt\/wp-content\/uploads\/2009\/10\/dazniu-juosta.PNG\" alt=\"dazniu juosta\" width=\"580\" height=\"199\" \/><\/a>\r\n\r\n2. \u012era\u0161o garso lygis. Yra nustatyta riba 0, kuri\u0105 per\u017eengus garsas smarkiai i\u0161kraipomas. Nustatyta, kad audio-cd diskuose garso \u012fra\u0161\u0173 garsumas netur\u0117t\u0173 vir\u0161yti 96dB, tai Cool Edit programa tiesiog rodo diagram\u0105 nuo -96dB iki 0dB.\r\n\r\n<a href=\"http:\/\/milvis.lt\/wp-content\/uploads\/2009\/10\/garso-lygis.PNG\"><img class=\"alignnone size-full wp-image-1041\" title=\"garso lygis\" src=\"http:\/\/milvis.lt\/wp-content\/uploads\/2009\/10\/garso-lygis.PNG\" alt=\"garso lygis\" width=\"580\" height=\"146\" \/><\/a>\r\n\r\nKokyb\u0117s testas atliekamas tokia tvarka:\r\n\r\n1. FLAC garso failas dekoduojamas \u012f original\u0173 wav fail\u0105\r\n\r\n2. WAV failas decoduojamas \u012f MP3 auk\u0161\u010diausios kokyb\u0117s su 320kbps\r\n\r\n<object classid=\"clsid:d27cdb6e-ae6d-11cf-96b8-444553540000\" width=\"560\" height=\"340\" codebase=\"http:\/\/download.macromedia.com\/pub\/shockwave\/cabs\/flash\/swflash.cab#version=6,0,40,0\"><param name=\"allowFullScreen\" value=\"true\" \/><param name=\"allowscriptaccess\" value=\"always\" \/><param name=\"src\" value=\"http:\/\/www.youtube.com\/v\/YUg---eW_T8&amp;hl=en&amp;fs=1&amp;\" \/><param name=\"allowfullscreen\" value=\"true\" \/><embed type=\"application\/x-shockwave-flash\" width=\"560\" height=\"340\" src=\"http:\/\/www.youtube.com\/v\/YUg---eW_T8&amp;hl=en&amp;fs=1&amp;\" allowscriptaccess=\"always\" allowfullscreen=\"true\"><\/embed><\/object>\r\n\r\n<object classid=\"clsid:d27cdb6e-ae6d-11cf-96b8-444553540000\" width=\"560\" height=\"340\" codebase=\"http:\/\/download.macromedia.com\/pub\/shockwave\/cabs\/flash\/swflash.cab#version=6,0,40,0\"><param name=\"allowFullScreen\" value=\"true\" \/><param name=\"allowscriptaccess\" value=\"always\" \/><param name=\"src\" value=\"http:\/\/www.youtube.com\/v\/5XeG6tEW6Bc&amp;hl=en&amp;fs=1&amp;\" \/><param name=\"allowfullscreen\" value=\"true\" \/><embed type=\"application\/x-shockwave-flash\" width=\"560\" height=\"340\" src=\"http:\/\/www.youtube.com\/v\/5XeG6tEW6Bc&amp;hl=en&amp;fs=1&amp;\" allowscriptaccess=\"always\" allowfullscreen=\"true\"><\/embed><\/object>\r\n\r\nAntrame video, MP3 muzikos failas ai\u0161kiai matoma nukirpta garso da\u017eni\u0173 juosta vir\u0161 ~16kHz neb\u0117r muzikos, tik triuk\u0161mas lik\u0119s. O garso lygis labai da\u017enai per\u0161oka maksimali\u0105 nustatyt\u0105 rib\u0105, d\u0117l to garsiau klausant MP3 \u012fra\u0161\u0173 labai girdimi garso i\u0161kraipymai.\r\nAr juntamas skirtumas klausant muzik\u0105? Na per kompiuterines kolon\u0117les ir prast\u0105 integruot\u0105 garso plok\u0161t\u0119 tai normaliu garsu gerai ir mp3 \u012fra\u0161as skamba, ta\u010diau labai garsiai klausant jau netik juntamas tr\u016bkumas garso da\u017eni\u0173 bet ir i\u0161kraipymai \u017eymiai didesni ypa\u010d \u017eem\u0173j\u0173 da\u017eni\u0173 (kolon\u0117l\u0117s ima plerpt \u017eymiai labiau nei tuo pa\u010diu garsu klausant audio-cd ar flac ar wav kuri\u0173 kokyb\u0117 galima prilygint originaliam \u012fra\u0161ui).\r\n\r\n<a href=\"http:\/\/www.elektronika.lt\/articles\/knowledge\/9901\/\">Va radau ir straipsn\u012f,<\/a> kuriama ra\u0161oma apie t\u0105 garso lyg\u012f","type":"rich"}