[mythtv-users] High Volume during commercials

[Jay R. Ashworth]

On Tue, Oct 16, 2007 at 08:30:03PM -0600, Brian Wood wrote:
> The question might be is it really a "volume" difference you are hearing
> or something else.
> 
> Often the audio on commercials is highly processed, and what you are
> hearing is a difference in "psycoacoustic perceived loudness" and not
> really "volume".

Specifically, the audio on commercials is often analog-compressed, and
the *average* level is therefore much higher, while the peak is not.

> This sort of thing can be very difficult to detect and/or control
> without an actual human in the loop.
> 
> I seriously doubt is there is any truly effective way to automate a
> solution to this problem, at least not at consumer prices.

"dialnorm".

I think.

Cheers,
-- jra
-- 
Jay R. Ashworth                   Baylink                      jra at baylink.com
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