Hi! The upper microphone works when talking on speaker phone or with headset, but the bottom one doesn't. I've also tested with the microphone amplifier app, which clearly shows that the upper works and the bottom (default) doesn't. The line is completely still and value at 0 for the default mic.
In the beginning it was random, working on some calls and not others. All of the sudden it stopped working conpletely, on calls and with all apps.
Have tried cleaning it with a needle, didn't work. Have also tried flashing two mic fix I found here on the forum, they didn't work either, one by user fbs and the other by thejester123.
Has anyone had similar issues and found a solution?
If the zero is the peak signal reading, mike may be dead(or killed with the needle now).
I it's a volume/amp register it's software related.
Normally the microphones should just switch with talk modes, one being the microphone and the other for ambient noise reduction.
Related
I'm having a problem turning off the speaker after a voice call. The proprioty software I've written runs on top of shell32 using the TAPI. The voice call goes through successfully but after the lineDrop() function the inbuilt mic and speaker are still switched on. Interference / crackling can be heard if you put the XDAII to your ear. The exact same code works perfectly on the original XDA.
I've tried muting the volume and setting the mic and speaker on-hook via phoneSetHookSwitch() function but to no avail.
The phone software under shell32 seems to get the same problem except after a few seconds the speaker makes two short, quiet beeps and places the mic and speaker on-hook.
The only lead I have is that a few portions of shell32 had to be chopped out due to incompatability issues with my software. Maybe one of these components have affected the phone? Any ideas would be appreciated.
You won't believe the solution.
Play a short (silent) .WAV file after the voice call has been dropped.
This sorts the problem.
Hi all,
I just got a Nexus 4 recently and I've been racking my brain with what on earth is happening with the microphone.
The problem is that the microphone WORKS PERFECTLY when doing a google search, voice call in normal mode, or voice recording. It does not work at all if I enable the speakerphone during a voice call. This seems to be exactly the opposite problem that others are having with the Nexus 4. I can still hear the person in the call but when I talk, they can't hear me. Not even white noise, just total and utter silence.
I have tried 2 flex cables (trying replaced the initial one whose microphone didn't work at all, at the time I had CM11) and tried flashing everything (baseband, recovery, system) to stock 4.2.2, tested it with no luck. I then flashed everything with the latest version 4.4 off google's developer section and tested with the same issues. I've tried factory resets, unplugging the headphones, and also soundabout and nothing resolves the issue.
When I look at the flex cable and the phone housing, it seems to me that there is only one microphone on the bottom. On the top, there is the noise canceling mic, but I don't think this has anything to do with the speakerphone. Am I wrong? Does anyone have any thoughts or suggestions? I don't know whether this is a hardware problem or some low level software issue.
UPDATE:
I noticed something super strange. If I plug a headphones w/ a mic into the headphone jack, I can actually hear very loudly and in great detail the friction from my fingers moving up and down anywhere the case of the phone, and if I tap on the body of the phone (anywhere, even near the USB port on the bottom) it's like stuffing paper into your ear canals. I can still hear the person on the other end fine, and they can also hear just as clear and loud when I touch the phone body. This phone is a science experiment now. The closer I move my fingers to the bottom of the phone near the mic, the louder it gets.
've tried everything. You also changed the Kernel, I do not know ... Maybe it's a problem RADIO, but I doubt it.
Eventually contact Google support
Typical factory problem....when i bought my Nexus 4 (S/N shows production date is October 2013 so its the newer batch with little nipples and camera lens offset fix) the microphone was dead and i could've only talk through headphones and speakerphone....took it to the repair shop and everything works now. Don't know what they replaced, maybe it wasnt the microphone.
Has anyone dealt with a dead mic ?
One day out of the blue on 4.4 mic stoped working.
Installed L 5.1. beta 3 and the mic still seems dead (Calls and Google voice) HOWEVER in sound recorder the mic works (picking every single sound) ...
Further more installed the HiQ Mp3 recorder which apparently can use front and or back mic and it works in all configs .(front back and stereo)
Tried different values via engeenering mode with no luck ....
****** Apologies to all this post was misplaced in this forum *********
I guess I should replace the charging board alltogether however I am puzled that the recordings come out clean ......
Anyone with a similar experience ??
(btw sound on wired headset is fine ... bluetooth sound is broken I think due to beta since the bt headset and speaker I tried didnt work)
Phone is Jiauy S3A
Ok Results
The issue was a dead mic (low mic) or rather a near dead mic.
Replacing the mic (on the same board ) resolves the issue (note that you can use third party mics i used asamsung one)
Best test to realise where is the fault
Open the camera recorder and start recording
Close the top mic hole with your finger, start talking in the lower mic and in the end gently (very gently) blow towards the hole.
Repeat on the top hole with the lower hole closed
After that listen to the video
If there is a problem with a mic the voice might be heard but the blow will be almost inaudiable in the problematic mic.
I have exactly the same problem - mic works fine on sound recorder and on the video camera, but Google Voice Search and using the phone does not (I've tried your blow test and it's all fine). This surely cannot be a hardware fault, can it ?
I've tried updating to LL5.1 beta3, but same problem. I've fiddled with the audio settings in the engineering menu, using a variety of values, and turned off the noise reduction without any success.
Any ideas ?
clayts450 said:
I have exactly the same problem - mic works fine on sound recorder and on the video camera, but Google Voice Search and using the phone does not (I've tried your blow test and it's all fine). This surely cannot be a hardware fault, can it ?
I've tried updating to LL5.1 beta3, but same problem. I've fiddled with the audio settings in the engineering menu, using a variety of values, and turned off the noise reduction without any success.
Any ideas ?
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Click to collapse
Google voice was the main indicator that the mic was bad ....
Do the blow test again and try as "gentle" as possible and then compare the results, if the uper mic is louder then then mic is dead or nearly dead.
Most probable that you ll need to change your mic
Thanks for your help - can you provide a link to the replacement mic you used (or did you use one from an old phone) - and is it easy to replace ?
Unfortunately I did go to a service shop for the repair, so I dont have a model number, all I know is that he proposed two different types, one was a noname and the other one was made by samsung (so my guess is that any samsung service center can sell you one) .
The process took about half an hour, unsoldering the old mic and soldering the new and the cost was 10 euros ( around 11 USD)
Sorry I couldnt be any more helpfull on that.
I found that, after video recording with stock camera app, main mic stop working for calls. only upper mic working. you can test it with 2 phones in both hands. but I was find simple solution: many people holding phone when taking pictures so the controls are on right side. but if you turn you phone so the shutter button will be on left side, after video recording, main mic still working!!! btw. if you like to take a shoot with control button on right side, just after you finished, turn your phone for 180° and make one more shoot, just to save your main mic for calls. no reboot needed after this action. tested on many roms, KK or LP, happend with all roms and stock camera. so problem is with stock camera app and sensor that give the information to phone to disable main mic.
Well mine was definitely a hardware fault - got a replacement lower board (USB/mic/speakers) and replaced it myself - all good again.
I think i've got the answer. The lower mic is broken for some of us. When we got to the camera app and take a video and turn the phone around it will indeed change the mic and then will use the upper one (still working) in future calls. This is why you can then be heard after when you call someone, but you'll be using the upper mic and the lower mic is still broken. Once your reboot you have to redo this. I'd like to buy a new board (usb + mic) but we cannot find any on internet anymore. Except some sellers on Ebay who are selling it from 150 dollars to 900 dollars (no joke). I guess i don't have much solution except doing that trick and use the upper mic and then try not to reboot the phone.
Been noticing that I say ok Google at the top of the phone and nothing happens then say it at the bottom and it works. Tested with the phone in safe mode and it still happened. If i block the bottom microphone it can't pick up anything. Anyone else can test this to see if they have the same issue or if it's just me that got a defective device.
Thanks in advance
I think the top microphone is for noise cancelation. So I think it's normal.
Sent from my SM-G935F using Tapatalk
It was my understanding that they both pick up sound and noise cancel between them. That's the way it's been on other phones I have had.
Tried mine, and it is the same as yours.
I also tested it by using the voice recorder app, speaking into the top microphone while covering the bottom mic and then playing back to see if it is picking up sound. The playback was very quite. However it works normal when using the bottom mic.
Additional info, the phone user guide indicates that the voice recorder app has two modes of operation - standard and interview. In interview mode both top and bottom mics are in operation. I put the voice recorder app into interview mode and run the same test ( covering the bottom mic and speaking into the top mic) , this time the playback was loud and clear.
So it might be that in normal operation the top mic operates in noise cancellation mode as suggested above.
The bottom mic is designed to take your voice input. The top mic is designed to hear ambient noise, and subtract that information from the signal the bottom mic sends to the phone, reducing the amount of noise on your call or recording. That's the way all my phones with a noise cancelling mic work.
It works with the voice recorder
iofractal said:
Been noticing that I say ok Google at the top of the phone and nothing happens then say it at the bottom and it works. Tested with the phone in safe mode and it still happened. If i block the bottom microphone it can't pick up anything. Anyone else can test this to see if they have the same issue or if it's just me that got a defective device.
Thanks in advance
Click to expand...
Click to collapse
Hello, the top mic works with voice recorder when you choose the "interview" mode from the 3 options on top.
I know for sure that both mic works on mine. I don't know whether some apps will use the top mic only for noise cancelation, as others have mentioned.
I used an app called "Easy Voice Recorder Pro" and enabled Stereo recording in the settings in this app. The top mic works as left, and the bottom one works as right. You can try gently rubbing your fingers over the mic area to see if it picks up the sound and play it back wearing a headphone.
As others are saying.
The top moc is use for phone calls.
You can use the top mic for interview mode.
This is all normal
I'm trying to remap my microphones because whichever microphone is used for voice commands, voice recording, and non-speakerphone calls doesn't work, so I'd like to instead be using the microphone that's used for video recording and speakerphone calls as that one does work. I'm gandering at mixer_paths.xml and I see four microphones, main-mic, sub-mic, 3rd-mic, and ear-mic. Which is which? Guessing ear-mic is the bottom hole one that doesn't work. I switched the ear-mic devices for main-mic and it didn't change anything.
Also, is there a better way to go about switching them for the system?
Should anyone else be in my situation, in mixer_paths.xml
main-mic is the bottom microphone. (DMIC2 &DEC2)
sub-mic is the top microphone. (DMIC4 & DEC4)
ear-mic is the physically plugged in headset microphone. (DEC5 & ADC2)
If you replace DMIC2 with DMIC4, and DEC2 with DEC4, your top microphone will work in place of your bottom one.
If anyone knows what 3rd-mic (DMIC6 & DEC6) is, I'd love to know. When I try to use it I don't get any audio input.