AAC vs. MP3: In iTunes Sound Quality Test

Ndekupi Kunyoresa Kwakanakisisa KwaAvhareji Muteereri?

Vazhinji vevanhu-vanhu vane hutano hwakanaka uye vanonyanya kukoshesa pahupamhi hwepamusoro-huno-vanowanzovenga MP3 uye mamwe majimu ehurukuro ehurukuro nokuti maitiro anoshandisa kuoma kunobvisa ruzivo kubva kumafaira ekugadzirisa kuchengetedza nzvimbo. Ichokwadi kuti izvi zvigadziro vanobvisa mashoko, asi vazhinji vanoverengeka vateereri havagoni kunzwa kurasikirwa. Sevhareji vateereri uye mutengi wemimhanzi, ndakaita chiyero kuti ndione kana imwe yemaitiro yakabva-yakaita imwe muhutano hwakanaka.

Zvinonyanya kutendwa kuti maAA files-iyo yakasarudzwa mumhanzi maTunes uye iTunes Store-inonzwika zviri nani uye inotora nzvimbo shoma pane ye MP3 yenziyo imwechete. Ndinoisa chidzidzo chekuedza chaiyo kuti ndikubatsire kusarudza kuti faira ipi yefaira yaunogona kushandisa nziyo muraibhurari yako iTunes uye pa iPhone yako nePod.

Kuitisa iyi audio file fomu shota-out , ndakanyora nziyo mbiri munzira dzakasiyana-siyana: se 128 Kbps AAC ne MP3 files , se192 Kbps AAC uye MP3 mafaira, uye se 256 Kbps AAC uye MP3 mafaira. Iyo yakakwirira nhamba yeBobps, yakakura faira, asi zviri nani hutsika-zvishoma munyaya. Kwemafaira ose, ndakashandisa encoder yakavakirwa iTunes.

The Test Subjects

Nokuda kwomuedzo wangu, ndakasarudza nziyo mbiri: yakanyarara, yakaoma "Wild Sage," neGomo Goats, uye nezwi guru, rakafukidzirwa re "Kusiya paJet Plane," naMekutanga naGimme Gimmes.

"Sage Wild" yakazadza pianos dzisina kumira uye guitar-finger-picked / strummed, ine rwiyo rukuru, runyararo.

Ndakasarudza nokuti ndinovimba kuti zvikamu izvi zvakaoma zvicharatidza zvakawanda zvakajeka mumashanduro akasiyana eefaira.

"Kusiya paJet Plane," kune rumwe rutivi, inokurumidza, inonzwika, yakasuruvara, uye yakazara zvikamu zvakaoma. Rwiyo urwu ruchava netariro kuratidza humwe hunoti hunobuda uye hunozivisa zvimwe zvinhu izvo zvinotyisa "Wild Sage" hazvingaiti.

Ndakashandisa CD yangu nziyo dzese idzi nziyo-zvichida iyo yakakwirira yepamusoro inowanikwa kwandiri-sechinhu chekutanga.

Hezvino izvo zvandakawana:

256 Kbps

• Wild Sage: Zvose shanduro inoita huru pa256 Kbps. Ndinokwanisa kunzwa zvakajeka kudonha kwemaketani emakita uye kufema kwezwi risina kusvibiswa kupi zvako. Ma MP3 uye AAC versions zvinonzwika zvakafanana. Hapana zvakajeka kukunda pano. The MP3 version is 1.2MB maduku, kunyange zvakadaro.
• Kubva paJet Plane: Same mamiriro apa. Rwiyo rwuri rukuru. Izwi rinonzwisiswa nemazwi asina kujeka uye pfungwa yakajeka yekubwinya, asi haisiwo inzwi rinonzwisisika.

192 Kbps

• Wild Sage: Iyi shanduro inonzwika zvishoma nezvishoma kana ichienzanisa ne 256 Kbps version. Zvisinei, hakuchina kujekesa pakati peAAC ne MP3. I MP3 inenge 1MB maduku.
• Kubva paIndaneti yeJet: Muenzaniso unobata zvechokwadi. Haisi yakafanana ne256 Kbps asi yakafanana pakati pezvipfeko zviviri zvefaira .

128 Kbps

• Wild Sage: Pakupedzisira musiyano. Mune shanduro iyi, shanduro yeAAC inonyatsojekesa uye yakajeka kupfuura MP3, iyo inotarisana nemaddiness maduku uye kusangana pamwe chete nemamwe mhere. Iyo faira yakakura yakafanana chaizvo, zvichiita kuti AAC version ive yakajeka kukunda pano.
• Kubva paJet Plane: Pano AAC inonyanya kukunda muhurukuro. Kana zvisina kudaro, nziyo dzinonzwika zvakafanana uye dzakangofanana zvakaenzana.

Mhedziso

Kunyange zvazvo pane, pasina mubvunzo, kusiyana kwemafungu emanzwiro emafaira matatu, anonzwika zvakaenzana zvakaenzana. Kunyangwe paine humwe humwe huwandu huwandu hwema 256 Kbps MP3, zvakaoma kuti nzeve isina kudzidza inzwisise, uye mafaira akawandisa kupfuura imwe shanduro. Nzvimbo imwe chete yaunogona kunge uchinzwa musiyano iri mumucheto ekupedzisira 128 Kbps macodings, asi ini handikurudziri avo zvakadaro.

Saka, kupa mhinduro idzi, zvinoratidzika kuti gakava pakati peAAC ne MP3 rinogona kusvika kune imwe nyaya yekuravira, maonero kana kuva nenzeve dziri nani kupfuura ini.

Faira Tafuro neKutodheta Mutengo / Kukura