Post-decode clipping detector (e.g. mp3) (Pro)

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Tom
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Post-decode clipping detector (e.g. mp3) (Pro)

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April 22, 2015
Post-decode clipping detector (e.g. mp3) (Pro)
for 32-bit floating point audio content.
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BTGbullseye
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Re: Post-decode clipping detector (e.g. mp3)

Nice.
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wshaper
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Re: Post-decode clipping detector (e.g. mp3)

... I like the phasemeter ;)

ThomasHelzle
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Re: Post-decode clipping detector (e.g. mp3)

Awesome!

Harry
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Hey guys,

What does this post-decode clipping exactly mean? I recognized this mostly in highly compressed files, a lot of red blinking .. so at first I thought these files are maybe compressed a little too much (-> war of loudness?) but then .. because it says post-decode .. maybe it's not about the file but about my setup? (hardware/decoder/audio-driver)? (I mostly use ASIO btw). What would let expect me that I could change something about it?

What I know from my past experience/knowledge is that I want to avoid clipping in signal processing (as long I don't explicit need/want it for effects) , so like when I setup a PA I change the gain for an input signal just that low, so it just doesn't clip when signal is the strongest/loudest...

What I understood technically so far is, that clipping in digital signal processing is (beside some effects) not good for signal quality, because every information about 0dB is cut off (clipped) and therefore lost. Because 0dB refers to the highest possible digital value, Right?
Then what do positive values there exactly mean? When it's eg. 0.7 does that mean there was like "0.7dB" too much information on that signal?

I searched a lot last hours but didn't get much smarter about, but really interested to understand what this exactly can tell me... so maybe someone with expertise can explain this to a non-audio engineer (though musician and at least basic electronics knowledge).

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