Lossless thev naus laus zis (txhais los ntawm Lus Askiv - "lossless") cuam tshuam qhov compression ntawm lub teeb liab acoustic siv cov cim tshwj xeeb. Ntxiv mus, lub teeb liab compressed tau rov qab los rau nws lub xeev qub nrog qhov tseeb kiag. Ntawd yog, yog tias koj sau cov teeb liab analog hauv WAV hom ntawv tsis muaj qhov ntawm qhov CD Audio txheem, thiab tom qab ntawd ua WAV compression siv cov codec hais, tom qab ntawv decompressing cov ntaub ntawv mus rau hauv WAV thiab ntxiv sau cov suab hauv daim CD dawb, koj yuav tau txais ob tug kiag li Audio CDs.
Txhawm rau khaws cov ntaub ntawv tawm suab hnub no, koj tuaj yeem siv hom kev lag luam yooj yim thiab tsis yooj yim. Hauv qhov no, qhov zoo tshaj ntawm cov nkauj sau los yuav muaj ntau yam zoo dua li cov tsoos lossy codec. Thiab nws yuav siv sij hawm ntau qhov chaw tsawg dua li lub suab tsis tau yooj yim. Ntxiv mus, niaj hnub neeg ua si cov khoos kas tau txais kev hloov kho kom haum rau cov hom tsis xiam, thiab txawm tias cov neeg tsis to taub nws tuaj yeem yooj yim kawm qhov no siv lub pluaj ploj.
Yuav tsum tau audio audio
Tsoos Ogg Vorbis lossis MP3 compressed format tsis tau raws li lub suab zoo xav tau ntawm cov nkauj tseeb. Tom qab tag nrho, cov cuab yeej zoo Hi-Fi yuav qhia tam sim ntawd txhua qhov acoustic flaws ntawm cov ntaubntawv povthawj siv. Lawm, thaum mloog cov lus qhia zoo li no ntawm cov cuab yeej ntawm tsev neeg, nws yog qhov nyuaj dua kom tau txais qhov khuam, thiab vim li no qhov no yuav haum rau ntau hnub no. Txawm li cas los xij, ib qho kev tsim nyog ntawm txoj hauv kev ntawm kev tsim cov nkauj hnyav sau rau "vinyl" lossis laser discs yog khaws nws ntawm lub khoos phis tawm ua suab tsis muaj suab. Tseeb, nyob rau hauv cov ntaub ntawv no, compact cia ntawm cov suab ntaub ntawv thiab pristine zoo tau lees tias, txawm tias siv compression.
Ib qho ntxiv, kev siv lub koos pij tawj nrog cov suab nrov thiab cov khoom siv (lub mloog pob ntseg thiab hais lus) ua rau nws muaj peev xwm los tham txog cov kev daws teeb meem kom raug nqi rau qhov teeb meem ntawm cov muaj cov nkauj zoo.
Thov nco ntsoov tias uncompressed lossless suab hom muaj xws li cov hauv qab no:
- CDDA yog lub tso suab txheem;
- WAV - Microsoft Wave;
- IFF-8SVX;
- AU;
- AIFF;
- IFF-16SV;
- NYOO.
Hom kev kos muaj xws li:
- FLAC;
- APE - Cov Lus Liab;
- M4A - Kua Lossless - Kua hom suab paj nruag;
- WV - WavPack;
- WMA - Windows Media Suab 9;
- LA - Cov Suab Lossless;
- TTA - Suab Tseeb. LPAC;
- OFR - OptimFROG;
- RKA - RKAU;
- SHN - Sau kom luv.
Lub FLAC (Free Lossless Audio Codec) hom ntawv yog ib qho uas muaj tshaj plaws. Muaj kev ua si zoo ntawm Hi-Fi thiab Hi-End cov cuab yeej thiab muaj peev xwm los tsim kom tau ib qho chaw khaws cia ntawm koj cov nkauj khaws cia tau tiav vim qhov tseeb tias thaum cov hom ntawv no siv los hloov ua suab paj nruag, tsis muaj cov ntaub ntawv no lwv tawm. Ntxiv mus, Qhov Kev Tiv Thaiv Dawb Lossless Audio Codec yog kev faib tawm dawb, uas yog qhov tseem ceeb heev rau cov nkauj nkauj, uas cov neeg sawv cev feem ntau nyiam coj tus kheej cov suab paj nruas ua haujlwm. Nws lub koob npe nrov tau dhau los ua qhov laj thawj uas tam sim no tau hloov mus rau feem ntau cov neeg siv xov xwm.
APE hom qauv yog tsim tshwj rau cov Windows platform. Hauv qhov no, lub algorithm uas siv rau kev zom zaws yog tsim los txo cov ntim tsis poob lub suab tsis zoo los ntawm ib thiab ib nrab rau ob zaug. Ntawm peb lub theem tseem ceeb ntawm qhov encoding, ob qhov zoo ib yam li cov neeg qub, thiab ib qho yog raws tus qauv ntawm acoustic compression. Cov ntawv tso cai ntawm cov qauv no tsis pub cov kws ntaus nkauj siv nws yam ywj pheej raws li flac.
Lub Apple Lossless cov hom yog ib txoj kev loj hlob los ntawm Apple tsim rau kev siv ntawm nws tus kheej lub twj. Nws yog iPod tau tshaj thiab muaj DRM cov cai tswj kev muaj peev xwm. Tsis tas li ntawd, Apple Lossless suav nrog qhov tshwj xeeb hauv iTunes thiab tau txais kev txhawb nqa los ntawm QuickTime. Nws tuaj yeem mloog nyob rau hauv Windows applications vim nws yog ib feem ntawm cov tsev qiv ntawv dawb do. Cov ntaub ntawv tso tawm los ntawm Apple xyoo 2011 hais txog cov kev cia siab rau txoj kev hloov pauv. Tom qab tag nrho, kev nias kom mus txog qib 40-60% ntawm theem ntawm lub teeb liab acoustic lub teeb liab thiab qhov loj ntawm qhov txiav txim siab nrawm yog qhov lees paub meej rau kev tsim nyog sib tw. Txawm li cas los xij, kev sib txig ntawm cov ntawv txuas ntxiv nrog Advanced Audio Coding codec, uas tsis yog lub suab paj nruag muaj txiaj ntsig zoo, tsim kom muaj qee qhov tsis meej pem.
Lossless suab mloog software
Qhov xav tau, qhov software software niaj hnub no tsis tau pib yoog raws qhov tsis muaj qhov kawg.
Lub tshuab WinAmp tam sim no ua haujlwm nrog yuav luag txhua hom tsis muaj peev txheej. Nws yog ntawm nws tus yam ntxwv uas koj tuaj yeem paub ua dab tsi tiag cov neeg uas ua suab paj nruag uas ua haujlwm nrog lub suab paj nruag hom ntawv yam tsis tau poob yam tsis tau poob zoo. Txawm hais tias qhov teeb meem ib txwm ua dhau los ntawm FLAC lossis APE codecs cuam tshuam nrog kev txiav tawm tag nrho cov disc ib zaug nrog ib tus ntawv, tus neeg uas ua ntawv no tuaj yeem ua ib qho kev sib txuas hauv cov suab paj nruag yam tsis muaj tseeb.
Cov neeg ua yeeb yaj kiab nrog kev txhawb nqa tsis muaj txiaj ntsig (jetAudio, Foobar2000, Kab laug sab Player) muaj tus neeg siv khoom siv sib txuam thiab, hauv kev xav ntawm feem ntau cov nkauj nyiam, tsis muaj qhov sib txawv ntawm lawv tus kheej. Kua Lossless hom ntawv siv iTunes ua cov nkauj. Thiab tus lej codec no tau hloov kho kom nrov VLC video player.
Apple cov khoos phis tawm tuaj yeem siv Vox thiab Cog Cov kev pab cuam, uas tau hloov kho nrog Apple Lossless, Monkeys Audio, FLAC thiab Wavpack. Thiab cov khoom siv nruab nrog Windows tau muaj peev xwm ua haujlwm nrog cov ntawv thov uas sib haum nrog Foobar2000 lossis WinAmp codecs. Nyob rau hauv rooj plaub tom kawg, tshwj xeeb plugins yuav tsum.
Cov khoom siv tsis sib haum thiab cov cuab yeej mloog zoo
Nws yog ib qho tseem ceeb kom nkag siab tias lub peev xwm los mloog suab paj nruag tsis zoo li qub rau txhua lub gadget. Yog li, ib lub ntsiav tshuaj lossis smartphone tsis muaj yam khoom siv zoo li PC. Txawm li cas los xij, ntau lub xov tooj ntawm tes muaj peev xwm hais tawm cov suab uas tsis muaj suab npe ploj. Piv txwv li, Android gadgets muaj peev xwm siv tus andLess player. Nws muaj cov flac, ape thiab uncompressed wav tawm tswv yim.
Cov khoom siv raws li Blackberry platform tsis tau muaj cov peev xwm zoo li no. Tsuas yog pib nrog Bold 9000 thiab 8900 tau ua cov ntawv xiam tsis zoo los ua muaj.
Apple gadget siv ALAC codec. Cov cuab yeej siv no muaj rau tus iPod tshuab ua si (tshwj tsis yog shuffle), tus xov tooj iPhone thiab iPad. Koj tseem tuaj yeem rub tawm lub FLAC Player app rau FLAC hom ntawv los ntawm App tom khw. Hom ntawv no kuj tau txais kev txhawb nqa ntawm Samsung Galaxy gadget, qee cov Sony Ericsson smartphones thiab tiv thaiv tsis muaj zog.
Txhawm rau mloog cov nkauj uas siv cov hom tsis xiam nyob hauv koj lub computer, koj yuav tsum muaj cov khoom tsim nyog. Qhov no suav nrog lub mloog pob ntseg, lub suab nrov, thiab cov lus hais. Kev txheeb xyuas zoo heev los ntawm cov neeg siv lub mloog pob ntseg hais txog cov khoom lag luam los ntawm cov hom Koss thiab Sennheiser. Hauv qhov no, nws yog qhov tsim nyog los xaiv hom qauv ntawm lub mloog pob ntseg nrog qhov loj tshaj plaws ntawm rab phom kom zoo suab. Tsis txhob muab kev nyiam rau cov qauv ua pob ntseg uas lub pob ntseg loj tau muab tso rau ntawm daim nyias nyias. Nyob rau hauv xws li lub mloog pob ntseg, lub suab zoo yog sib npaug rau ntawm mp3.
Kev xaiv ntawm EQ, amplifier thiab acoustics rau Hi-Fi lossis Hi-End zoo suab tau txwv tsuas yog peev nyiaj. Vim tias ntau cov khoom lag luam no nthuav tawm rau yuav luag txhua pawg ntawm cov nkauj mloog. Ntxiv mus, txhawm rau mloog lub suab teeb liab los ntawm lub PC, nws txaus los tsom rau cov kev xaiv yig rau kev saib xyuas cov lus ntawm cov npe nrov. Nws yog ib qho tseem ceeb uas yuav tsum tau coj mus rau tias ob-txoj kev acoustics tsis tuaj yeem tiv nrog qhov tsawg zaus nrog cov khoom siv zoo, uas yog vim li cas nws tseem ceeb siv acoustics nrog subwoofer rau qhov tsim nyog tsis muaj suab nrov. Microlab SOLO series cov khoom siv tau txais cov kev tshuaj xyuas zoo.
Ntsiab lus
Tam sim no, cov neeg nyiam ntawm cov suab paj nruag muaj txiaj ntsig zoo tuaj yeem txuag nyiaj ntau thaum siv hom qauv tshiab ntawm digital acoustics. Nws tsis yog ib qho nyuaj ntxiv los nrhiav cov tsev qiv ntawv tus kheej ntawm cov ntaub ntawv muaj peev xwm niaj hnub.
Txawm tias cov peev nyiaj xaiv tau tuaj yeem sib tw nrog Hi-End cov cuab yeej siv tau los. Tom qab tag nrho, kev siv hom tsis muaj peev xwm tuaj yeem siv hauv chav tsev, thiab lub suab zoo yuav tsis sib xws nrog MP3 ntawm cov hais lus yas.
