----- Original Message -----
From: "Al Christie" <[EMAIL PROTECTED]>


> When I googled this, I found that "normalizing" increases volume of all
> sounds.  Wouldn't this still make the quiets quieter than the louds?

Normalizing (peak type) shifts the volume level of all content, if that is
what you want.  You set the max in % or db.

Some normalizing is done on RMS basis (Root Mean Square), rather than peak.
This may be closer to dynamic range compression.  I do not know enought
about it, to say more.  I'm not sure if all normalizing software uses
exactly the same algorithm, or does everyone brew their own.  Especially the
RMS kind.  Have not had the need to mess with either and compare.  Do not
know which app does what, but most people refer to the "peak" based
normalizing.

Seems you are referring to dynamic range of a song.  Classical music
typically has greater dynamic range, while Pop is narrowest.  Some radio
stations use dynamic range compression during broadcast.  Some car
radio/cd/tape players have this feature also, which would boost quiet places
"on the fly", due to high ambient noise in a car.

> Is there software which would allow him to listen to each song, and
increase
> or decrease the volume?

Peak based Normalizing does just that.  The normalizing feature is handy,
when making a mix from several albums, which may have been mastered at
various volume levels.

Songs on a given album may have been mastered at various levels, depending
on the effect a producer wanted to achieve.  Of course, you may have a
different taste and normalize them :-)

Rich

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