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Ultimate Audio Playback => XXHighEnd Support => Topic started by: charliemb on July 14, 2012, 10:50:42 pm



Title: Where are we with Peak Extend and Arc Prediction with .9z-6-1c?
Post by: charliemb on July 14, 2012, 10:50:42 pm
I could not find it by searching so I have to ask.  Thanks.

I remember reading that PE must be used with AP right now (.9z-6-1c), else PE does nothing.

Is that correct?

(I ask also because I also remember reading that one user prefers AP without PExtend....  so I'm really confused.)

(btw I'm also trying SFS=2 today, so far so good)


Title: Re: Where are we with Peak Extend and Arc Prediction with .9z-6-1c?
Post by: PeterSt on July 15, 2012, 07:28:32 am
Charlie, It is a most confusing thing. I just had to look in the player, being convinced that I had it off for months - by accident (I just don't pay attention much I guess). But I have it on (thus for months).

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I remember reading that PE must be used with AP right now (.9z-6-1c), else PE does nothing.

True. I don't know abuout 0.9z-6 anymore, but here it is so that you can't engage it without AP. Should be the same in 0.9z-6.

PE On "creates" distortion in very high frequencies and this is by accident (I call it a compiler bug because I can't find anything else). It should reflect very high transients which with Off would be better (more transient). Otoh, the frequencies involved are too high to be rendered well by an audio chain, so when a very steep transient is there (which theoretically is up to inifinity for (sine) frequency) it might be better to "round" that by means of the distortion occurring. This is why it won't work out the same for everybody but also it will differ per other settings influencing a better sound reproduction. And at writing this I suddenly see the logic of that really, because I have these new settings all engaged and that *really* matters.

If you read the above again, you will (still) appreciate it as balony because it is tough to explain distortion for the better. But I really have less distortion in general which is very audible *and* I have PE on, thus that by itself distorting. But it may need it (the rounding) or otherwise (my) speakers can't cope (?).

It was only yesterday that overhere we were talking outloud about that it doesn't need to get better because all just plays without any anomalies or disturbances. It seems it can't get better.
And PE is on. So ...

Peter


Title: Re: Where are we with Peak Extend and Arc Prediction with .9z-6-1c?
Post by: charliemb on July 15, 2012, 05:33:24 pm
Thanks Peter.

BTW, it's hard to judge PE on vs. PE off because the difference is loudness is not exactly 3db.  It is somewhere in between 2db and 3db in my system and I can never dial it in just right even with an SPL meter.

In .9z-6-1c, clicking PE automatically turns on AP, yes, but then both can be turned off independently.


Title: Re: Where are we with Peak Extend and Arc Prediction with .9z-6-1c?
Post by: PeterSt on July 15, 2012, 09:16:17 pm
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but then both can be turned off independently.

That wouldn't be good. I will look into that one.

For the ~ 3dB ... correct.