mp3 to wav to mp3 to wav same? |
mp3 to wav to mp3 to wav same? |
 Feb 27 2003, 14:42
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#1
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Group: Members Posts: 10 Joined: 27-February 03 Member No.: 5219  |
If a file is encoded to mp3, then coverted back to a wav, and then that wav is convered back to mp3, will the both mp3s be the same?
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Feb 28 2003, 00:21
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#2
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 Administrator Group: Admin Posts: 2372 Joined: 22-September 01 Member No.: 3 |
QUOTE Codec does not remove anything. It rounds some values to be able to store them in less bits then original ones. Of course the psychacoustic model removes a lot! QUOTE How can the codec remove what has already been removed? It doesn't care if the WAV was previously MP3 encoded. It's like JPEG-compression: You can save a JPG as a BMP, but it will only have the quality of the original JPG. Compress the BMP as JPG again, and you get worse quality than the original JPG. There is no way of cutting a WAV (ex-MP3) down to ~1/10th of the original bitrate without applying the same methods of data-reduction as usual. |
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gts mp3 to wav to mp3 to wav same? Feb 27 2003, 14:42
CiTay No. MP3 encoding is a lossy process. The WAV that ... Feb 27 2003, 14:46 gts Well the first conversion from wav to mp3 removes ... Feb 27 2003, 15:05 Xenion QUOTE (gts @ Feb 27 2003 - 03:05 PM)Well the ... Feb 27 2003, 15:15 X-Fixer QUOTE (gts @ Feb 27 2003 - 09:05 PM)Well the ... Feb 27 2003, 15:26 gts QUOTE theoretically this could work this way. (sec... Feb 27 2003, 23:30 gts QUOTE original wav => mp3 =lossy
agreed
QUOTE m... Feb 27 2003, 23:33 Messer Codec does not remove anything. It rounds some val... Feb 27 2003, 23:39 gts Thank you.
What search words will find the topic?
... Feb 27 2003, 23:43 Mac I'll chip in because it took me a few goes of ... Feb 27 2003, 23:46 Messer I'd try "reencoding".
This is for e... Feb 27 2003, 23:49 gts Thank you! Feb 28 2003, 00:01 gts QUOTE It doesn't care if the WAV was previousl... Feb 28 2003, 00:30 Messer QUOTE (CiTay @ Feb 28 2003 - 01:21 AM)QUOTE C... Feb 28 2003, 00:35 gts QUOTE that essential process in lossy compression ... Feb 28 2003, 00:37 fewtch There's a simple way to test this. Encode a .... Feb 28 2003, 00:42 Artemis3 If you record a CD into a cassette tape, then use ... Feb 28 2003, 02:14 gts QUOTE If you record a CD into a cassette tape, the... Feb 28 2003, 02:29 rjamorim QUOTE (gts @ Feb 27 2003 - 08:30 PM)In the jp... Feb 28 2003, 02:39 gts QUOTE But reducing the amount of colors is only ON... Feb 28 2003, 02:44 rjamorim QUOTE (gts @ Feb 27 2003 - 10:44 PM)but the p... Feb 28 2003, 03:05 andrew3199 I think we can all agree that there is some loss w... Feb 28 2003, 04:29 rjamorim QUOTE (andrew3199 @ Feb 28 2003 - 12:29 AM)fo... Feb 28 2003, 04:36 dreamliner77 QUOTE I perceived the decay of plucked notes on an... Feb 28 2003, 05:19
makarov An analogy to JPEG lossy image compression was mad... Jan 30 2005, 07:33 NeoRenegade gts, with regards to your JPEG analogy... you refe... Mar 2 2003, 23:14 kdo QUOTE (rjamorim @ Feb 28 2003 - 03:05 AM)Code... Mar 3 2003, 00:37 aggies11 Not to resurrect a dead thread or anything, but it... Aug 21 2003, 02:13 Doctor aggies: no.
Lossy sound encoding is not like you ... Aug 21 2003, 02:54 phong An interesting thought, but probably academic. MP... Aug 21 2003, 02:58 AtaqueEG QUOTE (dreamliner77 @ Feb 27 2003, 11:19 PM)R... Aug 21 2003, 03:18 2Bdecided QUOTE (aggies11 @ Aug 21 2003, 01:13 AM)Could... Aug 21 2003, 10:33 2Bdecided In reply to the original question, the simplistic ... Aug 21 2003, 10:39 sld (Redundant post, sorry) Aug 21 2003, 10:40 Vietwoojagig I remember long time ago, there was a technology c... Aug 21 2003, 12:53 2Bdecided DCC used (what would become) MPEG-1 layer I.
You ... Aug 21 2003, 13:24 aggies11 Thanks for the quick replies. Very informative ind... Aug 21 2003, 17:06 phong The answer to the first question is "no... Aug 21 2003, 19:29 Doctor Yawn.
phong: I think you are wrong on both counts... Aug 22 2003, 03:29 phong I think I mis-specified which questions I was answ... Aug 22 2003, 03:46 Canar QUOTE (2Bdecided @ Aug 21 2003, 01:33 AM)I do... Aug 22 2003, 04:08 bexx Isn't wavpacklossy/hybrid whatever its called ... Aug 22 2003, 04:29 sublimelouie easiest way to think of it, its like xeroxing a xe... Aug 22 2003, 04:51 aggies11 Sublime:
easiest way to think of it, its like xero... Aug 22 2003, 05:26 2Bdecided This reply is in response to no one in particular.... Aug 22 2003, 11:05 Gabriel QUOTE IIRC FhG looked at this. You could call it a... Aug 22 2003, 11:23 smg QUOTE (2Bdecided @ Aug 22 2003, 06:05 AM)This... Aug 22 2003, 14:46 phong QUOTE Do it enough, you can reduce the complexity ... Aug 22 2003, 16:13 ErikS QUOTE (Gabriel @ Aug 22 2003, 11:23 AM)Now, t... Aug 22 2003, 16:50 Zilva Cosine transformation is NOT LOSSY. After transofm... Sep 10 2003, 10:06 tigre QUOTE (Zilva @ Sep 10 2003, 01:06 AM)Cosine t... Sep 10 2003, 10:35 2Bdecided QUOTE (Zilva @ Sep 10 2003, 09:06 AM)Cosine t... Sep 10 2003, 11:11 MugFunky wow.. old post. ("holy thread resurrection, b... Jan 31 2005, 04:06 h.tuehn I don't want to correct anything MugFunky or m... Jan 31 2005, 07:16 |
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