[Q] Noise Cancellation Audio Recording - Samsung Galaxy Nexus

Hello,
The galaxy nexus has two internal microphones. Is there a way to interface to each internal microphone and get the signals seperately? I need this to implement a noise cancellation algorithm that uses both mics.

Jessica K said:
Hello,
The galaxy nexus has two internal microphones. Is there a way to interface to each internal microphone and get the signals seperately? I need this to implement a noise cancellation algorithm that uses both mics.
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its used during calls and it works , so im guessing you can implement that in the same way for ur recording app

shriom_manerker said:
its used during calls and it works , so im guessing you can implement that in the same way for ur recording app
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Everything I've read says this phone doesn't have noise cancellation.
Sent from my Galaxy Nexus using Tapatalk 2

Using the java AudioRecord API, would I be able to get two microphone signals? How do I interface to each microphone separately?

Related

Microphone mod for while recording video

I just got my E4GT and I remember one time seeing a mod to fix the audio problem while recording. I can't seem to find it. Can someone link me to it please. Thanks.
I think this is what you are looking for.
http://forum.xda-developers.com/showthread.php?p=14296939#post14296939
It enables higher quality, but it doesn't fix the fact that we don't have a noise canceling microphone. I wish lgcamera worked in HD on our devices, because it allows for use of an external microphone.
Sent from my SPH-D710 using XDA App
I understand noise canceling mic are useful for phone calls but why would you want to cancel noise when video recording?
im0rtalz said:
I think this is what you are looking for.
http://forum.xda-developers.com/showthread.php?p=14296939#post14296939
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Thanks. Appreciate it.
im0rtalz said:
I understand noise canceling mic are useful for phone calls but why would you want to cancel noise when video recording?
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Because it minimizes wind noise.

[Q] Galaxy Y DUOS - How to Increase the microphone for incoming and outgoing calls?

I found this post http://forum.xda-developers.com/showthread.php?t=1185011 which shows how the Galaxy SII, the code works on the Galaxy Y Duos but the menu options are different and there is no option AUDIO, anyone know how to increase the microphone for incoming and outgoing calls?
People I talk to complain that the connection is down and I need to yell.
esmoreira said:
I found this post http://forum.xda-developers.com/showthread.php?t=1185011 which shows how the Galaxy SII, the code works on the Galaxy Y Duos but the menu options are different and there is no option AUDIO, anyone know how to increase the microphone for incoming and outgoing calls?
People I talk to complain that the connection is down and I need to yell.
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Have you tried pressing the vol button when calling?
Sent from my GT-S5360 using Tapatalk 2
yusuv said:
Have you tried pressing the vol button when calling?
Sent from my GT-S5360 using Tapatalk 2
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This only works to adjust the audio volume, and my problem with the microphone, I need to increase the microphone volume so people who are talking to me I need not hear me scream
esmoreira said:
This only works to adjust the audio volume, and my problem with the microphone, I need to increase the microphone volume so people who are talking to me I need not hear me scream
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May b its some mic pic(hardware) problem or may b ur mic hole blocked ......
if some problem plz contact service center .....

[Q] Disable noise cancellation in gtalk. Is it possible?

I have recently switched from S3 to Note 2 and I have experienced a significant change in gtalk sound. Now it's significantly darker, and my partner and I miss the slight bright noise in our audio conversations. She's had no changes on her phone and besides, before selling my S3 we had the chance to test both devices at once and clearly the sound was worse in note 2.
I had tried several things regarding microphone gain: N.E.A.K. kernel with wolfson audio control, alsa mixer, default_gain.conf tweaking, with not very noticeable changes.
I figure out the problem is not mic gain but noise cancellation. There's an option in stock phone app to switch it on or off during a call. Also some apps for sound recording have that option (Asr from play store).
Is there any way to disable noise cancellation under gtalk? Maybe in a configuration file? Does anybody know where that file is? Or maybe there's a way to disable noise cancellation globally?
Thanks for your help!
Have you tried disabling noise cancellation from your phone settings? Not sure if it will affect gtalk, but it's worth a shot.
Sent from my Galaxy Note 2 using Tapatalk 2

Q: Single fire speaker when using on-call speakerphone - Low volume

Hey all,
I was wondering if anyone else has experienced this issue. When I'm on a call with the 2 XL, only the bottom speaker fires, and it's pretty low when compared to my original XL. I have to max out the volume and still listen carefully for it to be of use. If anyone here has a 2 XL and an original pixel, could you test this too and report back? Thanks!
P.S. The speakers sound great when using it for music, games, etc.
Bump.... I posted the similar issue on the Google forums without response.
I do a lot of conference calls daily and was excited that the device uses 2 front firing speakers. Was really looking forward to that for conference calls. Come to find out that the phone only uses the bottom speaker for speakerphone. Doesnt really make sense to me since anything else--youtube, google music, etc. takes advantage of both speakers.
Hoping Google will listen to this and turn both speakers on for Speakerphone!!
Eric
iceman4357 said:
Bump.... I posted the similar issue on the Google forums without response.
I do a lot of conference calls daily and was excited that the device uses 2 front firing speakers. Was really looking forward to that for conference calls. Come to find out that the phone only uses the bottom speaker for speakerphone. Doesnt really make sense to me since anything else--youtube, google music, etc. takes advantage of both speakers.
Hoping Google will listen to this and turn both speakers on for Speakerphone!!
Eric
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I'm sure there will be an audio mod that gets developed that enables this feature in the future
iceman4357 said:
Bump.... I posted the similar issue on the Google forums without response.
I do a lot of conference calls daily and was excited that the device uses 2 front firing speakers. Was really looking forward to that for conference calls. Come to find out that the phone only uses the bottom speaker for speakerphone. Doesnt really make sense to me since anything else--youtube, google music, etc. takes advantage of both speakers.
Hoping Google will listen to this and turn both speakers on for Speakerphone!!
Eric
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This is done because of proximity to the top microphone for feedback prevention. Unlike just listening, conference calls require a microphone.
Sent from my Pixel 2 XL using Tapatalk
obsanity said:
This is done because of proximity to the top microphone for feedback prevention. Unlike just listening, conference calls require a microphone.
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This
obsanity said:
This is done because of proximity to the top microphone for feedback prevention. Unlike just listening, conference calls require a microphone.
Sent from my Pixel 2 XL using Tapatalk
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So new to this topic aka 'issue' but I just realized this also that the top speaker was not firing when I am on speaker phone.
Just to confirm -this is an intended feature - true?
Both speakers to fire when playing music or videos out loud - true?
perveeus said:
So new to this topic aka 'issue' but I just realized this also that the top speaker was not firing when I am on speaker phone.
Just to confirm -this is an intended feature - true?
Both speakers to fire when playing music or videos out loud - true?
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When playing video or listening to music there is no need for a microphone to be active. When you're in a conference call, the other person has to some how hear you and the phone app turns on your microphone. Because this microphone is so close to one of the speakers, it must be turned off so that sounds coming from it do not feed back to the microphone.
Sent from my Pixel 2 XL using Tapatalk
Its intended.
If the top speaker was to fire up as well,
The other party wont be able to hear you properly, since the sound from speaker itself will interfere too much for the mic next to it
Same situation will happen if you do video call. The phone will use top mic instead of bottom, since it assumed to receive your voice better that way
obsanity said:
When playing video or listening to music there is no need for a microphone to be active. When you're in a conference call, the other person has to some how hear you and the phone app turns on your microphone. Because this microphone is so close to one of the speakers, it must be turned off so that sounds coming from it do not feed back to the microphone.
Sent from my Pixel 2 XL using Tapatalk
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Wouldn't it make more sense for the top speaker to fire when in a speakerphone call then since the bottom speaker is so close to the microphone???
idkwhothatis123 said:
I'm sure there will be an audio mod that gets developed that enables this feature in the future
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We've been asking for that for months
pilotgav said:
We've been asking for that for months
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And there are mods backed into certain ROMs at this point. Problem is audio feedback and call distortion. It's not a fully functional mod at this point. Causes more harm than good.
idkwhothatis123 said:
And there are mods backed into certain ROMs at this point. Problem is audio feedback and call distortion. It's not a fully functional mod at this point. Causes more harm than good.
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I'm not saying you're wrong, I'm just a little confused how this happen.
I am thinking, if you hold the phone up to your ear, the mic is located at the bottom, not top.
And if there is a mic at the top, during speaker call we should be able to turn that off.
What says you on this theory?

Question How to fix Microphone?

Microphone works just fine in recordings app but during calls, the sound is very dim and unclear
People complain that the sound is unclear so I recorded a test call using Automatic Call Recorder app and found that the sound was very dim
but it is perfectly fine in stock recorder app
Is this software issue? How to fix it?
PS I used stock rom and had recently factory reset the phone
Have you tried cleaning the small microphone at the bottom of your phone? It's likely blocked by some dust. There is another microphone at your phone which is problem used for voice recordings, hence the difference in sound
Kenny13554 said:
Have you tried cleaning the small microphone at the bottom of your phone? It's likely blocked by some dust. There is another microphone at your phone which is problem used for voice recordings, hence the difference in sound
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Oh got it! I'll try cleaning it thanks

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