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Topic: --alt preset 128 and the -Y switch... (Read 4042 times) previous topic - next topic
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--alt preset 128 and the -Y switch...

How come the -Y switch is not used with the --alt-preset 128, 144 and similar settings by default?
I've noticed that it is used with the --alt-preset medium, which is supposed to give a little higher bitrates than 128 or 144.
How much degradation in quality would the --alt-preset 128 or 144 have if I used the -Y switch with it?
And, yes, I know that the alt-presets are tuned for optimal quality, but I'm just being curious, because I tried some samples, and they were easier to listen with the -Y switch... is it just me?

Many thanks.
Only the best is good enough.

--alt preset 128 and the -Y switch...

Reply #1 –
Quote
And, yes, I know that the alt-presets are tuned for optimal quality, but I'm just being curious, because I tried some samples, and they were easier to listen with the -Y switch... is it just me?
[a href="index.php?act=findpost&pid=270371"][{POST_SNAPBACK}][/a]

What do you mean, "easier to listen"? That does not sound like a valid ABX test, does it?   
Anyway, -Y does only make sense with VBR and not CBR/ABR. IIRC, these function as if they actually do use -Y (i.e. no noise shaping in sfb21), so adding it is pointless. Maybe someone else can provide more technical details...

Greetings, sTisTi
Proverb for Paranoids: "If they can get you asking the wrong questions, they don't have to worry about answers."
-T. Pynchon (Gravity's Rainbow)

--alt preset 128 and the -Y switch...

Reply #2 –
The adding -Y does not change the abr/cbr behavior.
Apart from technical explanations, this is a clear demonstration of placebo effect.

--alt preset 128 and the -Y switch...

Reply #3 –
Does that mean that the output file should be the same, regardless of my usage of the -Y switch?

As for the "easier to listen" term... well, what I meant was that the sample did not have that much "squealing" artifacts within the treble range when I listened to it... I could have been wrong, though, I admit 
Only the best is good enough.

--alt preset 128 and the -Y switch...

Reply #4 –
Quote
Does that mean that the output file should be the same, regardless of my usage of the -Y switch?

Yes. Another victim of the placebo affect.
"To understand me, you'll have to swallow a world." Or maybe your words.

--alt preset 128 and the -Y switch...

Reply #5 –
Ok... I am also another victim of an infinite ignorance (but trying to fix it):
what exactly is a placebo effect?

Thanks.
Only the best is good enough.

--alt preset 128 and the -Y switch...

Reply #6 –
Quote
what exactly is a placebo effect?
[{POST_SNAPBACK}][/a]
[a href="http://en.wikipedia.org/wiki/Placebo]http://en.wikipedia.org/wiki/Placebo[/url]
http://en.wikipedia.org/wiki/Placebo_effect

In other words, the difference only exists in your mind.
(because: "The adding -Y does not change the abr/cbr behavior.")

--alt preset 128 and the -Y switch...

Reply #7 –
OK... thanks to everyone.
More questions coming soon 
Only the best is good enough.