![\"AAC](\"http:\/\/farm3.static.flickr.com\/2510\/5778320285_a1506c89b7_b_d.jpg\")
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General description<\/p>\n
![\"AAC](\"https:\/\/www.macxdvd.com\/mac-dvd-video-converter-how-to\/article-image\/m4a-comparison.png\")
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Comparison of AAC, WMA and MP3 sound quality. Since the difference in AAC is very large according to the encoder, we use two types, QAAC as a representative of excellent coders and VO-AEACENC as a representative of deficient coders.<\/p>\n
QAAC 1.18, which borrows and encoding the Apple engine (Apple Support Software), which is also used in iTunes, wmaincode_0.2.9, encoding the Microsoft engine that comes with Windows XP or later, and the known open source encoder MP3 Lame We heard and qualify a total of 4 Visualon Vo-Aacenc 0.1.1 types, which recently became open source, 3.98.4, which also serves as a billing standard.<\/p>\n
result
\nQAAC 192KBPS> WMA 192K> QAAC 128K \u2252 LAME 192K \u2252 WMA 128K> LAME 128K \u2252 VO-AAC 192K \u2252 VO-AAC 128K 128KBPS, VO-AAC 192KBPS, VO-AAC 128KBPS were the highest ratings.<\/p>\n
evaluation
\nF: ID: Kamedo2: 20120124200328P: Image<\/p>\n
Encoder QAAC VOAAC WMAE boring Qaac Voac Wmae boring
\nYear of launch 2012 2011 2011 2009 2012 2011 2011 2009
\nVersion 1.18 0.1.1 0.2.9 398.4 1.18 0.1.1 0.2.9 398.4
\nCAA CAA AMM Format MP3 CAA CAA AMM MP3
\nProfile LC LC Standard —- LC LC Standard —-
\nClassification control CVBR ABR ABR CBR CVBR ABR ABR CBR
\n128K 128K 128K 128K 192K 192K 192K 192K 192K
\n41_30SEG percussion instrument 3.9 2.6 2.6 3.3 3.3 2.1 2.1 5.0 5.0 2.8 3.7 3.7 3.3 3.3
\nFinal fantasy Rope repellent 4.4 4.4 3.4 3.4 4.0 4.0 2.9 4.6 3.9 5.0 5.0 3.7 3.7
\nA Train Jazz 4.6 2.7 2.7 4.6 2.3 5.0 5.0 2.9 5.0 5.0 4.5 4.5
\nBig Yellow Cups 3.8 3.8 2.8 3.1 3.1 2.3 4.7 3.2 3.2 4.2 4.2 4.0 4.0
\nFloor essence Tecno 3.4 3.4 2.5 3.4 3.4 2.5 5.0 5.0 2.4 4.1 3.4 3.4
\nMacabre orchestra 4.6 2.8 5.0 5.0 3.4 3.4 5.0 5.0 2.8 4.7 4.7
\nMy blood is oxidized Rope instrument 5.0 5.0 2.4 3.9 2.8 5.0 5.0 2.4 5.0 5.0 3.9
\nMaybe Latin 4.1 2.3 3.6 3.1 3.1 5.0 5.0 2.3 4.3 4.5 4.5
\nVelvet Kingdom TECNO 3.8 3.8 2.5 2.7 2.7 3.0 3.5 4.5 2.6 2.6 3.5 3.5 3.2 3.2
\nRain flowers Cups 4.0 4.0 2.3 4.4 4.4 2.8 5.0 5.0 2.3 4.7 5.0 5.0
\nConfidence Gossip 3.7 3.7 2.8 3.6 3.3 3.3 4.3 3.2 3.2 4.6 4.1
\nWait Rock 3.8 3.8 2.6 2.6 3.7 3.7 2.8 4.2 4.2 2.7 2.7 4.6 4.0 4.0
\nLatin experience 3.8 3.8 3.8 3.8 3.7 3.7 3.5 3.5 5.0 5.0 2.8 5.0 5.0 4.0 4.0
\nHeart to Heart Cups 3.7 3.7 3.1 3.1 3.5 3.5 2.8 4.6 3.5 3.5 4.5 4.5 3.9
\nFemale Voice Dining Room 4.6 2.7 2.7 3.6 3.3 3.3 5.0 5.0 3.0 3.0 4.5 4.5 4.1
\n\u2191 SOUND SOURCE Average score 4.05 2.74 3.73 2.85 4.78 2.83 4.47 4.00
\nReal Rate 136K 130K 135K 128K 208K 194K 203K 193K
\nAll sizes (KB) 5803 5555 5782 5495 8894 8294 8674 8242
\nEncoder QAAC VOAAC WMAE boring Qaac Voac Wmae boring<\/p>\n
Method
\nEight eight audio files were shuffled using ABC \/ HR for Java 0.53A and MHP -A1 to listen and scoring with the brand face down so that the preconceived ideas on the brand will not affect it. 1.0 = I am very concerned about the deterioration of sound quality 2.0 = I am worried 3.0 = I am a little worried 4.0 = I can see the change in sound quality with respect to the original sound, but I do not care 5.0 = I do not know the Change in sound quality, I can not distinguish. If you want to grant a score of 4.9 points or less, perform the ABX test 20 times, answer 15 times or more (the likelihood of getting a higher rating in a coincidence is approximately 2%) and make sure you can listen to The difference before doing so (2.9 is omitted if it is less than or equal).
\nThe same test was repeated in the SE-DIR800CII and the average was calculated. The score in this test is 15 (sound source) x 4 (BITS rate) x 2 (times) = 240 (times).<\/p>\n","protected":false},"excerpt":{"rendered":"