android
Prev Previous Post   Next Post Next
  #38  
Old 08-07-2011, 02:33 AM
Sonic Atrocity Sonic Atrocity is offline
Junior Member
 
Join Date: Aug 2011
Posts: 6
Default

So I came across this http://nwavguy.blogspot.com/2011/02/...-measured.html

and there is this one quote in it


"PITCH TEST (revised 5/25): It's somewhat unusual to find significant pitch errors in today's digital audio players. And, if the error is consistent sample-to-sample, it's likely a design error with the hardware or firmware. There's already some info on the web about the Clip+ "running fast" and mine indeed does but only by a very small amount: 0.25%. So the musical note Middle C is 441 hz instead of 440 hz. I wonder how many would notice this, but I did confirm the problem using my Agilent bench meter (which has an extremely accurate internal timebase) and playing back a "perfect" 1 Khz sine wave:




ROCKBOX PITCH FIX: The good folks who maintain Rockbox apparently knew about the above error, and interestingly, fixed it in their firmware. Here's the same Clip+ playing the same file but running Rockbox and the error is now near zero (0.04%):"

0.25% worried me but 0.04% doesn't. Especially considering the awesome frequency response and absence of nasty rolloff.
Reply With Quote

 

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT -5. The time now is 10:08 AM.