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Author Topic: Replay Gain always negative?  (Read 1090 times)

rbilsbor

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Replay Gain always negative?
« on: September 10, 2004, 05:03:07 pm »

Probability of this question being really stupid: high

Okay, I've been using MC forever but haven't had a handheld.  With an iPod on the way, I analyzed my entire music library to set the Replay Gain for all the songs (that took awhile).  I noticed some people were having problems with their ipods and Replay Gain values of greater than "+ or - 15."  Well, NONE of my songs came up as having a positive RG value... is this the way it's supposed to be?  Also, I definitely have many songs that are -16, -17, and greater.  Is this going to bite me, and is there any way to set a range or anything?  Thanks.
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Matt

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Re:Replay Gain always negative?
« Reply #1 on: September 10, 2004, 05:24:54 pm »

That's normal.

Since you can't safely turn most digital signals up without clipping, the solution is to turn most things down instead.

If everything is being turned down, you'll want to add some gain in MC's iPod settings.

MC's DSP Studio can automatically pick the "ideal" gain, but I'm not sure if the iPod has this or not.

Hope that makes sense.
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Matt Ashland, JRiver Media Center

roognation

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Re:Replay Gain always negative?
« Reply #2 on: September 12, 2004, 04:39:50 pm »

Ok, I stumbled on this thread after doing some comparisons of some AUDIO CD burns.

I agree with turning things down to prevent clipping, but I was wondering if you guys could explain why and AUDIO CD burn yields a CD with significantly lower levels than a normal CD (e.g. I can put in an MC-burned audio disc and the meters don't even go above 10% of the total meter whereas a store-bought CD causes the meters to go to 95% of the meter).  It seems logical to utilize as much of the dynamic range of the 16-bits as possible, no?  It just makes things a bit awkward when playing a MC disc in a CD changer along with other discs.

I assume this has something to do with the replay gain level (relative loudness of the track) and the maximum level (if the RG is at -25 dB and the max level is at 99%, increasing the loudness to match other tracks RG would cause the max level to go over 100% and clip).

On a side note, what happens when you FIX the RG to some level and "clip protection" happens?  Is this a dynamic compression scheme or what?

Thanks!
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roognation
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SteveG

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Re:Replay Gain always negative?
« Reply #3 on: September 13, 2004, 09:13:41 am »

rbilsbor,

In regards to the iPod, when you enable 'Replay Gain' in the 'Volume Adjustment' dialogue, you have the option of boosting all the volumes before applying the Replay Gain which should solve your issue of files being outside the -15db range.

Steve
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