Attend XDA's Second Annual Developer Conference, XDA:DevCon 2014!
5,803,209 Members 44,342 Now Online
XDA Developers Android and Mobile Development Forum

Galaxy SII audio hardware analysis - now with detailled review.

Tip us?
 
Arron123
Old
#21  
Junior Member
Thanks Meter 10
Posts: 17
Join Date: Jul 2010
Anyway to help? Guide me though it

Sent from my GT-I9100 using XDA App
 
=dave=
Old
#22  
=dave='s Avatar
Member
Thanks Meter 3
Posts: 57
Join Date: Dec 2010
so do you think voodoo will come out for the sgs2?
 
ziggazee
Old
#23  
Senior Member
Thanks Meter 26
Posts: 230
Join Date: Jan 2009
Id love to help but im a noob lol dnt even know what half of you are talking about.. Anyway i heard your one of the best devs so if you can put a guide of how to get the info you need, id me happy to help. Wish this hansdet would release everywere already, that way more ppl with better knowledge would be able to help.

Sent from my GT-I9100 using XDA App
 
supercurio
Old
#24  
supercurio's Avatar
Senior Recognized Developer - OP
Thanks Meter 5,072
Posts: 3,529
Join Date: May 2010
Location: Chambéry

 
DONATE TO ME
Quote:
Originally Posted by Arron123 View Post
Anyway to help? Guide me though it

Sent from my GT-I9100 using XDA App
Hey
First, what kind of audio hardware do hot own? (Like: of sound card)

Also, do you have the male-male JACK cable to plug your phone output to your soundcard line input?

Sent from my GT-I9000 using XDA App
 
cpu98
Old
#25  
Junior Member
Thanks Meter 8
Posts: 16
Join Date: May 2011
Hi. It's me anotherguest at the IRC.

I rmaa'ed it.
It shows THD < 0.0050% and that was lower than iPod 5.5G.
It means lower than 0.005% not about 0.005%(met lower threshold of adc)
Unfortunately, however, other results are not reliable.

Hope someone with a great sound card measure it.
 
supercurio
Old
(Last edited by supercurio; 1st May 2011 at 06:38 PM.)
#26  
supercurio's Avatar
Senior Recognized Developer - OP
Thanks Meter 5,072
Posts: 3,529
Join Date: May 2010
Location: Chambéry

 
DONATE TO ME
Quote:
Originally Posted by cpu98 View Post
Hi. It's me anotherguest at the IRC.

I rmaa'ed it.
It shows THD < 0.0050% and that was lower than iPod 5.5G.
It means lower than 0.005% not about 0.005%(met lower threshold of adc)
Unfortunately, however, other results are not reliable.

Hope someone with a great sound card measure it.
Hi pal
Thanks for this first test!
How unreliable are the other tests, are they too limited by the sound card used for measurements? Even if you setup the recording itself all in 24bits?

I understand if you don't want to make these tests public if you think values are not accurate enough. However if you can send an URL by mail

So at least it seems to measure well at line-out output, which is a good thing. Means the DAC itself should be clean!
Now there is still the question of the headphone amp itself, and this basically only can be heard ^^

Sent from my GT-I9000 using XDA App
 
cpu98
Old
(Last edited by cpu98; 4th May 2011 at 03:21 AM.) Reason: Broke link
#27  
Junior Member
Thanks Meter 8
Posts: 16
Join Date: May 2011
Here comes the fresh result.

-4dB analog gain(0dBFS) on iPod : -10dBFS on PC
14/15 level slider on SGS2 : -10dBFS on PC

So you can add roughly 10dB to those dB.
That gives Noise level <= -93.1dB, -92.7dB / DR > 92.7dB, 92.7dB for SGS2, iPod 5.5G respectively. Not sure about other results.(Actual value would be better than this)
And if SGS2 level slider controls digital gain its result would be better.

Graph shows they have far different design.

It should be considered as an comparative measurement not an absolute value.

img52.imageshack.us/i/unledxz.png/
The Following User Says Thank You to cpu98 For This Useful Post: [ Click to Expand ]
 
supercurio
Old
#28  
supercurio's Avatar
Senior Recognized Developer - OP
Thanks Meter 5,072
Posts: 3,529
Join Date: May 2010
Location: Chambéry

 
DONATE TO ME
Quote:
Originally Posted by cpu98 View Post
Here comes the fresh result.

-4dB analog gain(0dBFS) on iPod : -10dBFS on PC
14/15 level slider on SGS2 : -10dBFS on PC

So you can add roughly 10dB to those dB.
That gives Noise level <= -93.1dB, -92.7dB / DR > 92.7dB, 92.7dB for SGS2, iPod 5.5G respectively. Not sure about other results.(Actual value would be better than this)
And if SGS2 level slider controls digital gain its result would be better.

Graph shows they have far different design.

It should be considered as an comparative measurement not an absolute value.

img52.imageshack.us/i/unledxz.png/
Thanks

Here are your measurements directly shown as I can link external content:




There is just 1 thing that looks strange, its in the THD+N graph: see the white shape around 1kHz, is it jitter? at this frequency? It doesn't look right. but yeah we need counter-measurements.

I'm interested in measurements at the maximum digital volume too
 
cpu98
Old
#29  
Junior Member
Thanks Meter 8
Posts: 16
Join Date: May 2011
I can't see such shape when I see 1kHz in the scope. It's clean!

Don't know what that is.
The Following User Says Thank You to cpu98 For This Useful Post: [ Click to Expand ]
 
Woodend
Old
#30  
Member
Thanks Meter 0
Posts: 81
Join Date: Oct 2010
Hi guys,

can you already say something about the quality of the DAC after these few tests? I'm dying to know.

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes