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Chipiron View Drop Down
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Direct Link To This Post Topic: Sound Formats
    Posted: September 15 2005 at 07:42

Perhaps this thread is not new, but I haven't found it ...

I want to compare the sound quality of several audio formats: mp3, wma and aac. I know wma and mp3 but I've never used aac I will use the files for a portable device, so, I don't need a higher quality than 128 kbps wma or so. What would be the equivalent in aac? I know the equivalence is not exact but I need some orientation. Is there any good article on the subject on the web?

Thanks a lot.



Edited by Chipiron
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oliverstoned View Drop Down
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Direct Link To This Post Posted: September 15 2005 at 08:04
The higher the compression, the harsher the sound.
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Direct Link To This Post Posted: September 15 2005 at 08:13

NEVER USE WMA...the f**king files is encrypted with DRM wich makes them unplayable on other pc's....I am currently having the trouble of my life crackin this DRM protection...as for MP3'S you should atleast concider 192 or even 256kbps because 128 is quite awfull to listen to...

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Direct Link To This Post Posted: September 15 2005 at 08:21
I've never had trouble changing files from one PC to another device... I use my own CDs as a source. Maybe that solves the problem?
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Direct Link To This Post Posted: September 15 2005 at 08:26
Originally posted by maidenrulez maidenrulez wrote:

NEVER USE WMA...the f**king files is encrypted with DRM wich makes them unplayable on other pc's....I am currently having the trouble of my life crackin this DRM protection...as for MP3'S you should atleast concider 192 or even 256kbps because 128 is quite awfull to listen to...

Not exactly true, you can configure the Windows Media Player to encode the files unencrypted.

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Direct Link To This Post Posted: September 15 2005 at 08:29
Originally posted by Chipiron Chipiron wrote:

Perhaps this thread is not new, but I haven't found it ...

I want to compare the sound quality of several audio formats: mp3, wma and aac. I know wma and mp3 but I've never used aac I will use the files for a portable device, so, I don't need a higher quality than 128 kbps wma or so. What would be the equivalent in aac? I know the equivalence is not exact but I need some orientation. Is there any good article on the subject on the web?

Thanks a lot.

My opinion is that all these formats sound pretty much the same. They are all highly optimized, and perhaps WMA 64kbps and AAC 64kbps have a little advantage compared to mp3 64kbps ... but who would want to listen to that anyway?

With 128kpbs, I can hear no differences.

BTW: Depending on the quality of your portable device, encoding in 192kbps can make a HUGE difference. I use mp3 64-192kbps VBR ... this results in files with 160kbps avg.

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Direct Link To This Post Posted: September 15 2005 at 08:44
From my experience, having used all 3 formats, mp3 is still the most versatile.  both wma and aac get slightly better quality at lower bitrate, but aac was annoying to me because it could only play in itunes, and I couldnt find a reliable file converter to change them if i wanted to use them elsewhere (i.e. burn a data cd for use in an mp3 compatible CD player), and the same goes for .wma.  Technically they are better for sound quality, but most devices nowadays are compatible to mp3 files, but not all 3.

so, my recommendation is to use mp3's but rip at 192kbps.  128 is awful.  256 is nice but takes up a good deal of space, which is a problem when you have a large collection. 
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Chipiron View Drop Down
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Direct Link To This Post Posted: September 15 2005 at 10:10

Thank you all!

I've read that both wma and aac claim to get acceptable quality at 64kbps. I've checked that it's false for wma, and it seems to me that, following your advice, it's false for aac as well...

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Direct Link To This Post Posted: September 15 2005 at 10:15
^ that's entirely subjective. 64kbps can be sufficient with really crappy headphones ... but even then you hear the compression quite clearly.
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Direct Link To This Post Posted: September 15 2005 at 11:21
Originally posted by MikeEnRegalia MikeEnRegalia wrote:

Originally posted by maidenrulez maidenrulez wrote:

NEVER USE WMA...the f**king files is encrypted with DRM wich makes them unplayable on other pc's....I am currently having the trouble of my life crackin this DRM protection...as for MP3'S you should atleast concider 192 or even 256kbps because 128 is quite awfull to listen to...

Not exactly true, you can configure the Windows Media Player to encode the files unencrypted.

No f**king way...i ripped some stuff from cd's to wma files on a old machines and backed up the wma files...Now on my new machine it wont play on any kind of media player because it says it needs the liceneces from the old machine...but i dont got the f**king licensces and you cant f**king turn them off

f**kING MICROSOFT MEDIA PLAYER

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Direct Link To This Post Posted: September 15 2005 at 11:29

^ Right beneath the dropdown in the options where you can select the format of the ripped files, there should be a checkbox to enable/disable copy protection.

Of course this decision has to be made when the files are created ... once encrypted, they can only be decrypted with the appropriate keys.



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Direct Link To This Post Posted: September 15 2005 at 11:48
Originally posted by MikeEnRegalia MikeEnRegalia wrote:

^ Right beneath the dropdown in the options where you can select the format of the ripped files, there should be a checkbox to enable/disable copy protection.

Of course this decision has to be made when the files are created ... once encrypted, they can only be decrypted with the appropriate keys.

ah i thought the copy protection was something else but its too late blah...i guess i have to use my hacking skills to try to decrypt the code it is pretty old it was encryptet in DRM Ver2 so i guess that will make it a bit easier

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Direct Link To This Post Posted: September 15 2005 at 15:27
Mike, how can you listen to Rammstein?
For sure, you can listen to it over compressed on a PC.
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Direct Link To This Post Posted: September 15 2005 at 18:29
Don't use CBR, use a good VBR model for the best quality relative to bitrate.
 
Have a read of http://wiki.hydrogenaudio.org/index.php?title=Main_Page#Audi o_Formats and indeed a search through www.hydrogenaudio.org for a comprehensive answer.
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Direct Link To This Post Posted: September 15 2005 at 19:37

Originally posted by oliverstoned oliverstoned wrote:

Mike, how can you listen to Rammstein?
For sure, you can listen to it over compressed on a PC.

I listen to www.last.fm radio player ... sometimes a track is played and when I'm at work I 'm busy and can't skip it fast enough ...



Edited by MikeEnRegalia
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Direct Link To This Post Posted: September 16 2005 at 22:50
Originally posted by Chipiron Chipiron wrote:

Perhaps this thread is not new, but I haven't found it ...

I want to compare the sound quality of several audio formats: mp3, wma and aac. I know wma and mp3 but I've never used aac I will use the files for a portable device, so, I don't need a higher quality than 128 kbps wma or so. What would be the equivalent in aac? I know the equivalence is not exact but I need some orientation. Is there any good article on the subject on the web?

Thanks a lot.

 

Chipiron,

You might find the following threads useful. Some of them discuss the various formats MP3/WMA/OOG/AAC/FLAC etc. and also give URLs for sites which have audio comparisons and further details. There is also discussion on the SACD vs DVD-A debate and the vinyl vs CD debate, with some interesting comments. It's worth reading through them all - you'll probably learn quite a bit.

http://www.progarchives.com/forum/forum_posts.asp?TID=4034

http://www.progarchives.com/forum/forum_posts.asp?TID=990

http://www.progarchives.com/forum/forum_posts.asp?TID=1795

http://www.progarchives.com/forum/forum_posts.asp?TID=716

http://www.progarchives.com/forum/forum_posts.asp?TID=864

 

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Chipiron View Drop Down
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Direct Link To This Post Posted: September 17 2005 at 04:01
Originally posted by Fitzcarraldo Fitzcarraldo wrote:

Originally posted by Chipiron Chipiron wrote:

Perhaps this thread is not new, but I haven't found it ...

I want to compare the sound quality of several audio formats: mp3, wma and aac. I know wma and mp3 but I've never used aac I will use the files for a portable device, so, I don't need a higher quality than 128 kbps wma or so. What would be the equivalent in aac? I know the equivalence is not exact but I need some orientation. Is there any good article on the subject on the web?

Thanks a lot.

 

Chipiron,

You might find the following threads useful. Some of them discuss the various formats MP3/WMA/OOG/AAC/FLAC etc. and also give URLs for sites which have audio comparisons and further details. There is also discussion on the SACD vs DVD-A debate and the vinyl vs CD debate, with some interesting comments. It's worth reading through them all - you'll probably learn quite a bit.

http://www.progarchives.com/forum/forum_posts.asp?TID=4034

http://www.progarchives.com/forum/forum_posts.asp?TID=990

http://www.progarchives.com/forum/forum_posts.asp?TID=1795

http://www.progarchives.com/forum/forum_posts.asp?TID=716

http://www.progarchives.com/forum/forum_posts.asp?TID=864

 

 

Thank you, Fitzcarraldo!

I'm going to study a lot!!!

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Direct Link To This Post Posted: September 17 2005 at 11:11
I'd use Ogg Vorbis if I was doing low bitrate encodes.
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