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DvDInfo PIPO scanning


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Posted

Version 4.52 seems to be very comparable to cdspeed and fully mature,

variance of about 1% on first trial disk.

Posted

A2nec8x3550.pngB2nec8x3550.png

 

chewy's scans

Posted

thanks corn!

 

I think those 2 scans are about as close as can be.

Now this is almost approaching scientific standards.

Posted

pretty conclusive that they are damn close

Posted

I saw this scanner on clearance for 32$ at newegg, took 3 flashes

to get it crossed to the B line and updated, I think I will keep it.

Posted

I will grab 4.52 at the weekend and try some more scans too.....

Posted

btw, don't compare 'Quality' ratings between the two.

 

The algorithms used to calculate that value are very different in each program. CDSpeed's is pretty basic. DVDInfoPro's takes more into account.

Posted

Thanks that answers another of my questions as to whether the quality ratings are to be believed or not ! :)

Posted
The algorithms used to calculate that value are very different in each program. CDSpeed's is pretty basic. DVDInfoPro's takes more into account.

 

Cdspeed doesn't seem to factor in PIE's at all and Dvdinfo seems to give them just a little

weight. Using a nec 3550 as a scanner to repeat this would probably show that.

 

I doubt that either will ever incorporate a damper for rogue spikes into their equation.

Posted

Jitter plays a big part in DVDInfoPro's too. Not sure if CDSpeed uses it.

Posted

Will I need a modded FW to get my drive to do the Jitter tests ? :unsure:

Posted

Don't think it's possible with NEC drives mate. Sorry!

Posted

Ah ok - no worries, just didn't want to run a load of tests and then find I could have done jitter tests too ! :lol:

Posted (edited)

@chewy - you're right, the NEC doesn't like PIE scans much (saw that mentioned in the cdfreaks review of the drive as well), the rest looks ok though.....

 

lb38ximgburn7fn.png

Edited by lfcrule1972
Posted

that's a damn good burn and scan with such a new burner, the way I interpret is first look at the PIF totals, anything below 100 is great

with an 8ecc scanner, the PIF average is next, here's the weak link,

it needs to be reported to the 1/10 at least, this is where we get an idea

how much rogue spikes skew the QS. Now last is the PIE's, they

are easily handled by settop players, of course if you have POF's

bush the disk. Try a rescan of the disk at 8x and see what happens to the PI peaks and average. I think the QS formula is pretty good,

PIF average and total has far more weight.

The new NEC's probably are off by a factor of 10 on the PIE.

 

still running stock firmware I see

Posted

Ok about to re-scan, what difference does the speed make to the scan results chewy ?

Posted (edited)

:o Well 8x scan sure ups the PIE's and PIF's a bit :lol:

 

lb38x8xscan6ph.png

 

What's the steady green line in this one ? Is it rpm ?

 

speedtest6zy.jpg

Edited by lfcrule1972
Posted

sure is mate

Posted

I have heard claims of a lot of variance in these scans with the 3550/4550, I know a disk is very sensitive to handling.

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