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MasVis comparison of 2 audio files - (mp3 left wav right) what the hell happened here?

The Torrent

So my mate sent me a 320kbps copy of his original composition (left), and then the wav (right)

 

 

image.thumb.png.843c74484522a296889e9ecf3035b916.png

does anyone know what happened???

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22 hours ago, geo3 said:

That's lossy compression removing some of the data to make the filer smaller. 

but the one on the left looks like it has *more* dynamic range???

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Do a phase inversion analysis to see what difference there really is but you're correct, the right has almost no dynamic range...

Sloth's the name, audio gear is the game
I'll do my best to lend a hand to anyone with audio questions, studio gear and value for money are my primary focus.

Click here for my Microphone and Interface guide, tips and recommendations
 

For advice I rely on The Brains Trust :
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3 hours ago, The Flying Sloth said:

Do a phase inversion analysis to see what difference there really is but you're correct, the right has almost no dynamic range...

Am unfamiliar with this. Can you recommend a software?

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8 hours ago, The Torrent said:

Am unfamiliar with this. Can you recommend a software?

Place the two audio tracks into a program like audacity, align them precisely and invert the phase of one. 
The only sound you will hear is the difference between the two files as any identical frequencies played against one another with inverted phase will cancel out.

Sloth's the name, audio gear is the game
I'll do my best to lend a hand to anyone with audio questions, studio gear and value for money are my primary focus.

Click here for my Microphone and Interface guide, tips and recommendations
 

For advice I rely on The Brains Trust :
@rice guru
- Headphones, Earphones and personal audio for any budget 
@Derkoli- High end specialist and allround knowledgeable bloke

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