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How To Disable the noise cancellation

OP FormelLMS

12th June 2010, 08:00 PM   |  #1  
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Yes, the title says it.
Anybody an idea how to disable it?
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12th June 2010, 08:02 PM   |  #2  
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Why would you want to disable it? Just curious.
12th June 2010, 08:04 PM   |  #3  
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Yes, easy to answering:
http://forum.xda-developers.com/showthread.php?t=700018

It's a real annoying problem by making calls with plugged in car radio or headset.
(Look at the Link)
13th June 2010, 08:25 AM   |  #4  
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It was recently posted in the general section that if you edit /system/build.prop from "media.a1026.enableA1026=1" to "media.a1026.enableA1026=0" it should disable the noice cancelling mic. I have not tried it myself yet but it should work. You need to re-edit the file if you want to re-enable the mic.
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13th June 2010, 11:14 AM   |  #5  
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Thank you very very much.
This works!!

Now I can place calls in my car, plugged in to the AUX Jack and others can hear what I say.

I haven't found it yet in the forum...
13th August 2010, 03:39 AM   |  #6  
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Quote:
Originally Posted by pmadej15

It was recently posted in the general section that if you edit /system/build.prop from "media.a1026.enableA1026=1" to "media.a1026.enableA1026=0" it should disable the noice cancelling mic. I have not tried it myself yet but it should work. You need to re-edit the file if you want to re-enable the mic.

Hi, How exactly do you do that? I am using a Samsung Galaxy S. Please help.
13th August 2010, 08:33 AM   |  #7  
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Your phone must be rooted.
Open root explorer, navigate to /system/

Mount your System r/w and open the build.prop with a long press and choose "open in text editor"

Then scroll to the correct line, delete the "1" and change it to an "0".
Then save and exit and don't forget to reboot your phone.
19th October 2010, 11:15 PM   |  #8  
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I have an Android G1 devphone in my possession and the /system/build.prop doesn't contain that string.

Any ideas on turning off the noise canceling mic?

Thanks!

/system/build.prop
Code:
# begin build properties
# autogenerated by buildinfo.sh
ro.build.id=CRC1
ro.build.display.id=dream_devphone-userdebug 1.5 CRC1 150275 test-keys
ro.build.version.incremental=150275
ro.build.version.sdk=3
ro.build.version.release=1.5
ro.build.date=Wed Jul  1 13:38:12 PDT 2009
ro.build.date.utc=1246480692
ro.build.type=userdebug
ro.build.user=android-build
ro.build.host=apa3.mtv.corp.google.com
ro.build.tags=test-keys
ro.product.model=Android Dev Phone 1
ro.product.brand=android-devphone1
ro.product.name=dream_devphone
ro.product.device=dream
ro.product.board=trout
ro.product.manufacturer=HTC
ro.product.locale.language=en
ro.product.locale.region=US
ro.board.platform=msm7k
# ro.build.product is obsolete; use ro.product.device
ro.build.product=dream
# Do not try to parse ro.build.description or .fingerprint
ro.build.description=dream_devphone-userdebug 1.5 CRC1 150275 adp,test-keys
ro.build.fingerprint=android-devphone1/dream_devphone/dream/trout:1.5/CRC1/150275:userdebug/adp,test-keys
# end build properties
#
# system.prop for dream
#

rild.libpath=/system/lib/libhtc_ril.so
wifi.interface = tiwlan0
# Time between scans in seconds. Keep it high to minimize battery drain.
# This only affects the case in which there are remembered access points,
# but none are in range.
wifi.supplicant_scan_interval = 45

# density in DPI of the LCD of this board. This is used to scale the UI
# appropriately. If this property is not defined, the default value is 160 dpi.
ro.sf.lcd_density = 160

#
# ADDITIONAL_BUILD_PROPERTIES
#
ro.config.notification_sound=F1_New_SMS.ogg
ro.com.google.locationfeatures=1
ro.com.android.wifi-watchlist=GoogleGuest
ro.com.android.dateformat=MM-dd-yyyy
ro.com.android.dataroaming=true
ro.com.google.clientidbase=google
ro.ril.hsxpa=1
ro.ril.gprsclass=10
ro.setupwizard.mode=OPTIONAL
ro.url.legal=http://www.google.com/intl/%s/mobile/android/android-dev-phone-legal.html
ro.url.legal.android_privacy=http://www.google.com/intl/%s/mobile/android/android-dev-phone-privacy.html
keyguard.no_require_sim=true
ro.config.sync=yes
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt
20th October 2010, 12:03 AM   |  #9  
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G1 doesn't have such mic, I believe.
20th October 2010, 02:36 AM   |  #10  
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Quote:
Originally Posted by Jack_R1

G1 doesn't have such mic, I believe.

Oh really? It's the best hypothesis that I've got.

I'm trying to make an app that is a dumb microphone that records all background noise (to be processed later) and the phone seems to ignore anything that isn't my voice. Even when I blast music and stick the phone next to the speaker, the phone records the music in very very low volume. Same thing happens if I try the Voice Search app (can tell volume based on the amplitude graph shown) and if I record video. All audio but voice is either ignored or hush hush in videos.

I can only think that it is a noise canceling mic destroying the background noise.

Any ideas?

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