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PhoenixRisingtw t1_j6mtpzw wrote

Reply to comment by Joseph_HTMP in Why do DSD files sound better than flac? by Dani3L_1917

By null test you mean blind test?

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Joseph_HTMP t1_j6mzn5k wrote

No. Put both files into an audio editor, flip the polarity on one of them, and if they're the same they should cancel out into silence. If they don't, what you're hearing is the difference between the two files.

It is literally the most scientific way of finding out if there's a difference between two bits of audio.

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MachineTeaching t1_j6p0zvm wrote

That falls apart rather quickly. You wouldn't expect a regularly mastered flac and a dsd file to actually be identical.

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PhoenixRisingtw t1_j6n4ntd wrote

That's definitely interesting. How do you flip polarity? But even if the're not the same, you might still not be able to hear that difference and placebo might be in place.

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zoinkability t1_j6p9ckw wrote

Wouldn’t that show a positive for both reasons why an audible difference would exist? Either a different master or a difference due to format would be audible via a null test.

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