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ATRAC3

Ov
post 12 Oct 2006, 14:00
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are careva idee (am cautat pe google dar am gasit doar marketing&shit) cu ce se mananca codec-ul asta (specific sony).
Stie cumva sa scoata un fel de surround ?
Pe unde gasesc o imagine de ceva s-o arz pe-un CD si sa aud live ce-i de capul lui ?

Am auzit mai demult la cineva in masina (avea un HU sony) o melodie care era surround, dar n-am intrebat despre ce e vorba. Ma gandesc c-o avea vre-o oarecare legatura cu atrac-ul asta


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Maxx40
post 12 Oct 2006, 14:44
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ATRAC: A technology that has revolutionized the way we listen to music


ATRAC uses a variety of advanced technologies to analyze digital sound data, allowing it to reduce the size of that data while maintaining superb sound quality (ATRAC*1 compresses music data to approximately 1/5 the data rate of a CD; ATRAC3 and ATRAC3plus are able to compress music data to approximately 1/10 and 1/20 the data rate of a CD, respectively). This ability to reduce the size of data has enabled recording media to be made smaller and more tracks to be recorded on them, changing the way we listen to music.


CD
(LinearPCM)
ATRAC*1 ATRAC3 ATRAC3plus
Bitrate 1411kbps 292kbps 132kbps 64kbps
DataSize
(One 4 minute track) 42.33MB 8.77MB 3.97MB 1.94MB
Number of Tracks Recorded into CD-R(700MB)
About
16tracks About
79tracks About
176tracks About
360tracks


Sursa:
http://www.sony.net/Products/ATRAC3/overview/index.html

Codec de compresie:
http://www.softpedia.com/get/Multimedia/Au...dio-Codec.shtml

Este un format mult mai util ca spatiu cu mai multa fidelitate decat mp3 la 128kbps egala cu mp3 la 192kbps dar cu ocuparea spatiului mult mai mic.
Succes la codat! Eu unul mi-am facut 2-3 discuri dupa care m-am plictisit smile.gif)



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Ov
post 12 Oct 2006, 14:54
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Academician doctor inginer, savant de renume mondial


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ai idee daca surround-ul este posibil cu atrac-ul asta ?
un demo sa-l arz pe-un CD unde gasesc si io?
thx,


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Maxx40
post 12 Oct 2006, 15:07
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Nu am demo pt ca sunt la birou si nu am cum sa ies
Maine daca nu uit o sa imi iau un disc din masina si o sa iti pun o melodie pe site.
Nu are nici un surround in plus fata de o melodie normala cum ti-am explicat.
Este la fel, numai ca ocupa mai putin pe hdd sau pe disc si reda la fidelitate buna, atata tot!
Exact asta: "mai multa fidelitate decat mp3 la 128kbps egala cu mp3 la 192kbps dar cu ocuparea spatiului mult mai mic." adica se aude ca la 192kbps si ocupa spatiu cat o melodie codata la 128kbps
O melodie mp3 de 5 min la 192 are cam 5mb si aceiasi melodie la 128 are cam 3,5 - 4mb, exact cat are si un ATRAC dar cu fidelitate de 292kbps.
Cred ca am fost destul de explicit tongue.gif



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cristirenault
post 12 Oct 2006, 15:20
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nu iti mai bate capul cu atrac , nu este decat o alternativa timida la MP3 scoasa de cei de la SONY , nu a avut succes pentru ca nu ofera nimic in plus fata de MP3 , daca ai un MP3 bun adica de la 192kbps in sus nu iti trebuie nici un ATRAC , m-am omorat si eu un pic cu problema asta ca am un MP3 player sony si aia de la sony ziceau in softul care mi l-au dat ca face minuni , nu face absolut nimic wink.gif


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Ov
post 13 Oct 2006, 09:26
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Academician doctor inginer, savant de renume mondial


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sa zicem c-am priceput biggrin.gif

si totusi, surround-ul de l-am auzit eu, de la ce provenea ?


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