Improve Sound Quality of Speaker Phone

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Guys,

When reading the tweaks on the wiki site, I've found these, but have not been able to fix the problem.


"You might have observed that when you turn on speaker while during a call, the other person has complained of too much disturbance on the line and can hear more of static then your voice. Here's a fix to improve mic sensitivity:




HKLM\Software\HTC\AUDIOGAIN(x)\RECEIVE_UPLINK_VOLU ME = CC (DWORD hexadecimal)
HKLM\Software\HTC\AUDIOGAIN(x)\EARPHONE_UPLINK_VOL UME = CC (DWORD hexadecimal)
where (x) = none, 0, 1, 2


Disable the security warning when installing non-certified application"

The thing is that I do not have the audiogain registery in my htc under this path. Should I add it then? and what should I put for the (X)?

Thanks