Hi all
I rarely post in XDA becau I havehave nothing to share. But today I am happy to share this a little thing.
For audio of Note2 N7100, have two matters : 1)Volume limit for some local, and for others seems not limit but still small sound, not enough for a high resistance headphone which over 150Ohm. 2) Distort and include auto interrupt power (sound stop) due to Headphones volume trick (mostly from original 55dB to 57dB or 60dB and 63dB as in some kernel/app or flashzip).
Now start. We need a rooted device Note2 (also for S3, Note3, S4 ) and Root Browser app (on google market)
Use Root browser (other app can do but recommend root browser) to access
\system\etc\sound\t03g. Base on device and Android version, if not found, it will be at \system\etc\default_gain.conf
Open it and you see extractly or similar to this
And this
That's all! Those values are different from your original, I changed them.
You see 3 elements related to volume
Headphones volume
Aif1dac volume
Dac1 volume
I have read specs of DAC chip WM1811 in Note2 from maker's homepage.
All volume level of components are 96 to 100dB (means over 100 is out of range or with distortion). But, actually those value I confirmed OK : sounds bigger and better.
Headphone volume is limit at 63 on Note2, 64 will cause no sound. On high impedance HP as 300Ohm, 63 also make overpowered of sound chip and it stops player.
It is not a good item to change
Aif1dac (audio interface 1) is reduce because I want to use more volume from Dac1
(Main audio use dac1, other as call, mic, FM on aif2, dac2 if I don't misreading).
For Dac1 volume we can choose 96(original) to 128 (over that makes no sound). I run near max value and never found audio interrupted or any thing happens, not heating, no distortion.
Lastly Audio path DAC to headphone mux val. =0 (original ="mixer")
Test it and feel. Have fun!
I rarely post in XDA becau I havehave nothing to share. But today I am happy to share this a little thing.
For audio of Note2 N7100, have two matters : 1)Volume limit for some local, and for others seems not limit but still small sound, not enough for a high resistance headphone which over 150Ohm. 2) Distort and include auto interrupt power (sound stop) due to Headphones volume trick (mostly from original 55dB to 57dB or 60dB and 63dB as in some kernel/app or flashzip).
Now start. We need a rooted device Note2 (also for S3, Note3, S4 ) and Root Browser app (on google market)
Use Root browser (other app can do but recommend root browser) to access
\system\etc\sound\t03g. Base on device and Android version, if not found, it will be at \system\etc\default_gain.conf
Open it and you see extractly or similar to this
And this
That's all! Those values are different from your original, I changed them.
You see 3 elements related to volume
Headphones volume
Aif1dac volume
Dac1 volume
I have read specs of DAC chip WM1811 in Note2 from maker's homepage.
All volume level of components are 96 to 100dB (means over 100 is out of range or with distortion). But, actually those value I confirmed OK : sounds bigger and better.
Headphone volume is limit at 63 on Note2, 64 will cause no sound. On high impedance HP as 300Ohm, 63 also make overpowered of sound chip and it stops player.
It is not a good item to change
Aif1dac (audio interface 1) is reduce because I want to use more volume from Dac1
(Main audio use dac1, other as call, mic, FM on aif2, dac2 if I don't misreading).
For Dac1 volume we can choose 96(original) to 128 (over that makes no sound). I run near max value and never found audio interrupted or any thing happens, not heating, no distortion.
Lastly Audio path DAC to headphone mux val. =0 (original ="mixer")
Test it and feel. Have fun!
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