[vorbis] wav/raw normalization

[Monty]

On Fri, Jul 26, 2002 at 12:47:37AM +0100, xdfisl wrote:
> I used EAC (www.exactaudiocopy.de) to rip about 200 albums last weekend,
> it has some pretty pedantic features, such as the ability to use a CD
> already analysed (by the person who wrote EAC, or other trusted party)
> with a known offset, to calculate the read offset of your optical
> drives!

Only a few drives have a deterministic offset.  This feature is
generally useless on drives that have inaccurate direct positioning;
that is, if the drive needs a program like cdparanoia or EAC, you
already have jittering/positioning errors and calculating an offset
isn't actually possible.

> In general EAC is pretty bare bones,

Heh, try cdparanoia some time.

> is aware of various advanced
> features that optical drives (Both those that do good, like Accurate
> Stream,

More than half of drives misreport this feature due to ambiguity in
the spec and the desire of manufacturers to look really good on paper.
Cdparanoia purposely ignores this feature flag when set becuase it's
usually wrong :-(

> PS. Unfortunately I have not used any other ripping utilities lately, so
> cannot comment on any sort of comparison between EAC and other software.
> I would have thought that EAC goes as far as is possible, though.

EAC is not open source so I've not verified the adata verification
routines.  I've conversed with the author about various drive failure
modes though, and came to the conclusion he knew what he was doing.
EAC is recommended software in my book.

Other software:

The majority of Linux rippers are cdparanoia based (I wrote cdparanoia
myself a few years before EAC appeared).  CDex (Windows) uses a
windows port of cdparanoia under the covers and so is also considered
trustworthy.

And I agree; normalization by modifying the waveform is to be avoided.

Monty

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