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RE: [motm] fun with mp3 converters

RE: [motm] fun with mp3 converters

2000-06-30 by Brousseau, Paul E (Paul)

Personally, when I rip one of my CDs for storage at work, I know that I'm
getting a less-than-perfect copy.  I use 160kbps (the highest my ripper will
go; maybe I should get a different one...), so the copy ends up swishy,
gargley, flanged, etc, especially on highhats.  But now, when I get the urge
to listen to some song, instead of hoping that it *might* be on one of the 4
or 5 CDs I happened to bring in that day, there's a much greater chance that
I've ripped it and its already on my hard drive.

In short, I don't expect great sound.  I expect great availability.  When I
want great sound, I listen on my home stereo.

Now, unfortunately, if you're ripping a soundbyte to demonstrate the
detailed nuances of some equipment or playing style, you're SOL!  Like a bad
A/D converter, you're bound to loose something.  :(

--PBr
Show quoted textHide quoted text
> -----Original Message-----
> From:	Dave Bradley [SMTP:daveb@...]
> Sent:	Friday, June 30, 2000 7:45 AM
> To:	motm@egroups.com
> Subject:	[motm] fun with mp3 converters
> 
> I just downloaded the encoder suggested below by David. This is my first
> time playing with them. I took Larry's .wav file as input, and played with
> all the different codecs and bitrate settings.
> 
> Each and every one of them altered the sound audibly. It was plain bad
> (gargling) until I bumped the bitrate up to 256 or 320. Even at the
> highest
> rate, it changed the sound of the VCOs from more of a pulse wave in the
> original .wav file, to a hollower, more square wave sound in the .mpg
> file.
> 
> Is this alteration of sound quality a general problem with mpg encoders?
> How
> do you seasoned mp3'ers deal with this?
>

RE: [motm] fun with mp3 converters

2000-06-30 by Dave Bradley

Sounds like you should at least get the free one I downloaded - it's capable
of better sound than swishy and gargley at the highest settings...

Dave Bradley
Principal Software Engineer
Engineering Animation, Inc.
daveb@...
Show quoted textHide quoted text
> -----Original Message-----
> From: Brousseau, Paul E (Paul) [mailto:noise@...]
> Sent: Friday, June 30, 2000 10:02 AM
> To: 'motm@egroups.com'
> Subject: RE: [motm] fun with mp3 converters
>
>
> Personally, when I rip one of my CDs for storage at work, I know that I'm
> getting a less-than-perfect copy.  I use 160kbps (the highest my
> ripper will
> go; maybe I should get a different one...), so the copy ends up swishy,
> gargley, flanged, etc, especially on highhats.  But now, when I
> get the urge
> to listen to some song, instead of hoping that it *might* be on
> one of the 4
> or 5 CDs I happened to bring in that day, there's a much greater
> chance that
> I've ripped it and its already on my hard drive.
>
> In short, I don't expect great sound.  I expect great
> availability.  When I
> want great sound, I listen on my home stereo.
>
> Now, unfortunately, if you're ripping a soundbyte to demonstrate the
> detailed nuances of some equipment or playing style, you're SOL!
> Like a bad
> A/D converter, you're bound to loose something.  :(
>
> --PBr
>
>
> > -----Original Message-----
> > From:	Dave Bradley [SMTP:daveb@...]
> > Sent:	Friday, June 30, 2000 7:45 AM
> > To:	motm@egroups.com
> > Subject:	[motm] fun with mp3 converters
> >
> > I just downloaded the encoder suggested below by David. This is my first
> > time playing with them. I took Larry's .wav file as input, and
> played with
> > all the different codecs and bitrate settings.
> >
> > Each and every one of them altered the sound audibly. It was plain bad
> > (gargling) until I bumped the bitrate up to 256 or 320. Even at the
> > highest
> > rate, it changed the sound of the VCOs from more of a pulse wave in the
> > original .wav file, to a hollower, more square wave sound in the .mpg
> > file.
> >
> > Is this alteration of sound quality a general problem with mpg encoders?
> > How
> > do you seasoned mp3'ers deal with this?
> >
>
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>

Re: [motm] fun with mp3 converters

2000-07-01 by Paul Schreiber

OK class is in session! All you stooges in the back, sit down!

MP3 is a "perceptual coder". It DOES NOT encode/compress static waveforms,
like a VCO output.
Just like JPEG goes a crap job on pure black & white images.

MP3 is actually a brilliant scheme which has to do with how *humans perceive
music*, and has
nothing *whatsoever* to do with "waveform compression".

All audio compression schemes are based on human hearing. The ADPCM
algorithm used in cell phones
is specific for band-limited voice. You run music through ADPCM, you feel
the hurt. But voice is perfectly
replicated.

So, don't get your panties in a wad over scope shots!

Paul S.

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