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  #1  
Old 12th February 2008, 06:55 PM
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acorn acorn is offline
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Smile Computer audio

Good day all

Has any one tried the lossless flac codec or used such a codec in any way or is the CD to wave format just as good, I am lead to believe that the flac lossless is much better because its losseles conversion.

Acorn
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  #2  
Old 12th February 2008, 07:38 PM
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Default Re: Computer audio

As long as the wav file was ripped losslessly they are both the same but flac will be a smaller file. Flac tends to be just a compressed (lossless) wav file.
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  #3  
Old 13th February 2008, 12:48 AM
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Default Re: Computer audio

Exactly, FLAC is a loss less file and they will sound the same as WAV...also WAV cannot be 'tagged' for album art and details whereas FLAC can.

I use FLAC throughout with my SBII, not only does it reduce storage space FLAC can help with borderline wireless connections as there is less data transmitted to the SB...
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Old 13th February 2008, 09:08 AM
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Default Re: Computer audio

Quote:
Originally Posted by NealG View Post
Exactly, FLAC is a loss less file and they will sound the same as WAV...also WAV cannot be 'tagged' for album art and details whereas FLAC can.

I use FLAC throughout with my SBII, not only does it reduce storage space FLAC can help with borderline wireless connections as there is less data transmitted to the SB...
I have two issues that I need to understand with Lossless (FLAC or otherwise), how is the compression done - I assume it's some sort of algorithm to remove unnecessary non music bits (digital!)?

So my second concern is : so surely at playback there must be a reverse engineering of that algorithm in real time on whatever devise: SB3, IPOD, Media Server etc?

If any of this is the case does it not imply WAV would be the simplist option - other than space usage?

Of course the assumsion could be complete rubbish!
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Old 13th February 2008, 10:00 AM
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Default Re: Computer audio

See: http://flac.sourceforge.net/features.html

Compression is performed on the 'host'. The WAV file is converted to FLAC and any Tag information, album art etc applied. For playback the FLAC file is sent to the device IE: SB, which performs the reverse decompression on the fly, this is then processed by the DAC in the normal way. Or the host can perform the decompression and send the data (now WAV) to the device.

WAV wastes space, does not support tagging and does not help if there is network congestion issues.

CD extraction utilities like EAC can call on FLAC during extraction and can add in CDDB tags automatically, all from a few mouse clicks. WAV does not offer any more convenience.
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  #6  
Old 13th February 2008, 11:24 AM
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Default Re: Computer audio

Quote:
Originally Posted by naimart View Post
I assume it's some sort of algorithm to remove unnecessary non music bits (digital!)?
There are no bits removed at all.... It is a LOSSLESS format.

http://en.wikipedia.org/wiki/Lossless_data_compression

http://en.wikipedia.org/wiki/Free_Lo...ec#Comparisons

Enjoy!!

Cheers
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  #7  
Old 13th February 2008, 03:51 PM
cjnuk cjnuk is offline
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Default Re: Computer audio

[quote=soulminer;52777]There are no bits removed at all.... It is a LOSSLESS format.]

I must be missing something here.... If there are no bits removed how is a FLAC file around 60 - 70% of the size of the equivalent WAV file? What has been removed to reduce it's size?
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  #8  
Old 13th February 2008, 06:09 PM
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Default Re: Computer audio

It's lossless compression!

One of the many sites from a Google search...

http://www.sfu.ca/~vwchu/howcompression.html
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Old 13th February 2008, 06:16 PM
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Default Re: Computer audio

Quote:
Originally Posted by cjnuk
I must be missing something here....
Read the links I placed in my last post.
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  #10  
Old 13th February 2008, 06:17 PM
cjnuk cjnuk is offline
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Default Re: Computer audio

Quote:
Originally Posted by NealG View Post
It's lossless compression!

One of the many sites from a Google search...

http://www.sfu.ca/~vwchu/howcompression.html
Well yes there is no disputing it is lossless but I think it's fair to say that bits ARE removed from the equivalent WAV file when encoded into FLAC (or other lossless format) and then effectively reinserted, on the fly, when the FLAC is replayed?
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