MP3 vs WAV
MP3 thiab WAV yog ob hom xov xwm cov ntaub ntawv tawm tswv yim siv hauv computer, thiab ob qho tib si nrov hauv PC's. MP3 tshwj xeeb yog tau txais los ntawm cov zej zog rau kev hloov suab paj nruag hauv internet.
MP3
MP3 yog ib qho ntawm thawj lub suab ntaub ntawv tawm tswv yim, uas tau qhia hauv MPEG-1 tus qauv ntawm Suab / Video compression. Nws stands rau MPEG-1 Suab Layer 3 (MP3). Nws tau txuas ntxiv mus rau MPEG-2 tus qauv ib yam nkaus.
MP3 siv qhov poob qis compression algorithm hauv kev encoding uas tso cai rau cov ntaub ntawv loj kom txo qis. Nyob ntawm tus nqi me ntsis, qhov zoo ntawm lub suab thiab cov ntaub ntawv loj yuav hloov. Compression algorithm txo tus nqi ntawm cov ntaub ntawv ntawm lub teeb liab los ntawm kev tsis saib xyuas qhov chaw ntawm lub teeb liab uas dhau qhov kev daws teeb meem ntawm tib neeg pob ntseg. Txoj kev no feem ntau hu ua perceptual coding lossis perpetual nrov shaping. (Txoj kev compression zoo sib xws yog siv hauv JPEG rau cov duab cov ntaub ntawv thiab MP4 rau cov ntaub ntawv video)
Cov ntaub ntawv tsawg tsawg ntawm cov ntaub ntawv mp3 ua rau nws zoo tagnrho rau kev xa cov ntaub ntawv suab hauv internet. Qhov no tau dhau los ua qhov teeb meem loj rau cov neeg tsim khoom thiab cov neeg ua yeeb yam thaum ntxov 2000's thaum lub vev xaib hauv internet xws li Napster muab cov nkauj dawb rub tawm hauv Is Taws Nem. Qhov no coj lub koob npe nrov rau cov ntaub ntawv hom raws li cov cuab yeej piracy loj. Txawm tias cov suab paj nruag nrog MP3 compatibility tau suav tias yog kev ua txhaum cai. Txawm li cas los xij, nrog kev tso tawm ntawm iPod hauv xyoo 2001, kev sib tw tau pab ua kom cov ntaub ntawv raug cai.
WAV
WAV lossis Waveform Audio File Format yog ib hom ntaub ntawv tsim los ntawm Microsoft thiab IBM rau PCs, thiab nws yog qhov muab los ntawm Microsoft Resource Interchange File Format (RIFF). Txoj kev no khaws cov ntaub ntawv tawm raws li cov ntaub ntawv chunks. Cov ntaub ntawv WAV feem ntau yog RIFF cov ntaub ntawv nrog ib qho "WAV" chunks uas muaj ob lub chunks hu ua fmt thiab cov ntaub ntawv. WAV yog cov hom ntaub ntawv tseem ceeb siv hauv windows raws li software rau lub suab zoo.
WAV yog hom ntawv tsis muaj ntaub ntawv; Yog li ntawd, tsis muaj compression ua tiav thaum lub sij hawm encoding ntawm cov ntaub ntawv kwj hauv linear mem tes code modulation. Raw thiab uncompressed suab ntaub ntawv feem ntau generated nyob rau hauv WAV hom nyob rau hauv lub qhov rais. Nws tuaj yeem hloov kho thiab kho tau yooj yim, thiab cov kws tshaj lij nyiam WAV kom zoo dua. Txawm hais tias nws qhov kev siv tseem ceeb li cov thawv ntim cov ntaub ntawv uas tsis tau ntim, WAV tuaj yeem tuav cov suab compressed ib yam nkaus, compressed los ntawm Windows Audio Compression Manager.
Vim vim tsis muaj cov ntaub ntawv encoding, WAV cov ntaub ntawv zoo li loj; yog li ntawd, tsis yog hom ntaub ntawv nrov rau kev hloov hauv internet. Txawm li cas los xij, nws tseem nrov vim nws qhov yooj yim thiab zoo.
MP3 vs WAV
• MP3 thiab WAV yog ob hom suab ntaub ntawv nrov siv ob qho tib si hauv khoos phis tawj thiab hauv cov khoom siv xws li cov ntaus suab paj nruag.
• MP4 yog tsim los ntawm Moving Pictures Experts Group (MPEG) ntawm ISO thaum WAV yog tsim los ntawm Microsoft thiab IBM.
• MP3 yog ib feem ntawm ISO MPEG 2 tus qauv; Qhov tseeb, MP3 sawv ntsug rau MPEG-2 Suab Layer III. WAV yog ib qho kev txhim kho los ntawm Microsoft RIFF thiab yog ib hom tswv yim pib. Txawm li cas los xij, tom qab ntawd nws tau dhau los ua tus qauv kev lag luam vim kev siv dav dav.
• MP3 siv lossy compression thaum lub sij hawm encoding. WAV yog hom ntaub ntawv lossless thiab siv linear pulse code modulation. Compressed audio tuaj yeem nkag mus rau hauv WAV cov ntaub ntawv ib yam nkaus, tab sis nws tsis yog nyob rau hauv kev siv ntau.
• MP3 cov ntaub ntawv muaj cov ntaub ntawv me me dua piv rau WAV vim tias qhov poob qis hauv qhov encoding.
• WAV suab zoo dua MP3 zoo.
• MP3 yog ib hom kev hloov suab paj nruag hauv internet, qhov WAV cov ntaub ntawv tsis siv rau tib lub hom phiaj vim cov ntaub ntawv loj dua.
