My _intended_ emal re: soundconverter anomolies

[daniel sobey]

A standard cd is 700mb and holds about 80 minutes of audio at 44100hz 16 bit I believe. 
It is more or less just the contents of the wave files plus a simple table of contents that has when the tracks start and not much more.
Depending on the length of song you can get about 16-22ish songs per cd.

You will not gain any more data by converting them back into wave as that data has already been lost from the original.
mp3 is a lossy format so it throws away a lot of the data from the original.
If you are doing this to just burn them back onto cd i would not bother converting them into wave then burning, i would instead just use your favorite media player and get that to do that step on the fly.

with point 2 you are probably not resampling it at all, 44100 is reasonably standard as that's what the original cd uses, the artifacts get worse when you change this.

so what is the end purpose of this? You should go back to the original if you are going to do any audio changes.
--- On Tue, 11/11/08, David Ryder <davaweb at bigpond.net.au> wrote:

> From: David Ryder <davaweb at bigpond.net.au>
> Subject: My _intended_ emal re: soundconverter anomolies
> To: "Ubuntu-au mailing list" <ubuntu-au at lists.ubuntu.com>
> Received: Tuesday, 11 November, 2008, 12:13 PM
> Hi,
> First, I sincerely apologise for mucking people up this
> morning with two
> emails I should have written when not being interrupted.
> 
> OK. Hardy 32 bit, Intel Core 2 CPU @ 2.13GHz
> 
> I am trying to convert 124.9MB of 18 mp3 files to wav
> format. (Actually,
> a lot of mp3's but this is my 'test' case in
> Hardy).
> 
> My tests:
> 18 mp3s totalling 124.9MB
> 
> 1. In Hardy, using soundconverter 1.0.1 (from the
> repository), I noticed
> loading the program used 50% CPU resources and was non
> responsive for
> about 15 seconds and greyed out, then was available to use.
> There is no
> resampling available in this version and converting the 18
> mp3 files to
> wav format resulted in 1.5GB.
> 
> 2. I installed manually the latest soundconverter 1.4.1. It
> loaded
> faster and worked faster. As it permits resampling for wav
> files, I
> chose 44100. The resultant size was again 1.5GB. I expected
> more as I
> thought resampling would make the files larger.
> 
> 3. As 1.5GB seemed large, I used a Windows machine, trying
> three of the
> plethora of software audio converters available. I
> converted the 18 mp3
> files to 44100 resampled. The resultant size was between
> 580MB and
> <800MB.
> 
> This seemed to confirm soundconverter's results were
> excesssively large,
> especially when compared to the 580MB - <800MB in
> Windows.
> 
> Can anybody help please? I need to convert a lot of files
> (preferably by
> gui because of the volume I have to do) and want the best
> quality for cd
> burning. (K3b is not an option for me. The only burning
> program I have
> ever found successful is Imgburn via Wine.)
> 
> Many thanks,
> David
> 
> 
> 
> 
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