Microphone or sound record issue - Xiaomi Redmi 3 Questions & Answers

Hello, I own a remi3s but I want to expand the question to other remi3 user. could anybody help me to test the record feature of the redmi 3s because I notice an issue. If I record in several Apps a sound like a long permanently humm sound, the sound record perfectly for the first couple of seconds (2sec) and after that the sound level lowers down. Even if I use the field recorder app or the in build Miui Audio recorder I notice that the led indicator of the Audio signal lowers. And than the record is very bumpy during a permanently sound like hum or somthing else. Only if I talk the record is very clear and nearly perfect.
Whats this strange level lowering of the recird signal during hum souns.
By the way I need surch records, because I am an audio engineer.
please could anybody test it on miui or cm based roms
Thanks

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[SD] Weird mic issue which is making my RN3 useless

Hey everyone,
Ever since I've received this RN3, its mic has been a constant source of frustration. it appears to be off during phone/whatsapp/.. calls (other party can't hear me AT ALL). Now before you think that this is a HW issue, when I record a video with the builtin camera app, it does record sound but at a lower volume than I think it should be. This is what i've tried/noticed so far:
- The exact same thing happens on Global 7.3.2, Global dev 6.5.19 and Chinese 7.3.2.
- Swapped SIM and/or placed SIM in tray 2 (no effect)
- Flashed Santhosh's CM 13 ROM (other party still can't hear me)
- Used builtin sound recording app on MIUI ROMS: I can hear a lot of noise but not what has been recorded
- Used builtin sound recording app in CM 13 ROM: nothing
I've looked on the en.miui forum board and apparently I'm not the only one with this issue. Other ppl are facing the issue that the mic gets shut off after recording video (and a reboot solves it), but this is not the case for me.
Does anyone have any idea? Thx.
Have you fixed that problem?
I have the same issue but a little bit different. I don't own a pair of hans-free so when I answer a call I connect a pair of headphones and talk from the phone's mic. So unless I have the phone 1 cm next to my mouth the other person cannot hear me, which didn't happen with my old phone (the other person could hear me even if the phone was 2 meters away from me). And it is not an issue because when I answer a call in speaker mode it operates correctly.
So I've discovered that the problem lies within the secondary mic next to the jack port which is used for noise cancellation as people state in miui forums. The only solution I've came up with is covering the secondary mic with my finger every time I answer a call. With this solution the secondary mic is "disabled" and the primary mic operates as expected, people can hear me even if the phone is not right next to my mouth. Of course this is not a permanent solution but I haven't found a way to disable the secondary mic through software yet, or calibrate it to not falsely filter every sound as noise and canceling it.
hallo guys,
i have the same problem on my redmi note 3 (mtk) for months, its really annoying.
when im having a call, my mic suddenly switches and my call partner can only hear me very very silent.
also i had some situations, that my call partner can not hear me at all. herefore a reboot worked fine...
as mentioned above, the problem are the 2 different mics on the redmi note3.
one is at the bottom which should be used for calls (lets call this MIC1), the other one is on the top next to the head jack plug (MIC2)
sometimes the MIC1 switches and so the call partner only can hear you via the top MIC2 - thats why your voice is very very silent then.
on the other hand when you record a video, the voice is switched to the top MIC2 and might stay there also after the video as standard - thats why no one can hear you in calls then, or only hears you very very silent.
solution: close the hole for the upper MIC2 with a tape, then it won't switch during calls!
disadvantage:
- you can't put a call on speaker, because system switches to MIC2 which isnt working.
- you can't use google now for music detection, because system switches to MIC2 which isnt working.
- you might have sound issues when recording a video in landscape (i tested it, had no problems and could hear the sound when watching the recorded landscape video)
here is a link about the recording videos in landscape vs portrait:
https://www.youtube.com/watch?v=yDE4B8Z3q14
and here a video with the tape solution:
https://www.youtube.com/watch?v=mFjGp3PEZt0
are there any software solutions to disable the second mic??
How to solve Redmi note 3 mic Problem:
Step 1: Go to Google settings (Not phone setting)
Step 2: Tap on Search & Now
Step 3: Tap on voice . After that tap on “Ok Google” detection
Step 4: off the “Ok Google” detection .
Congratulation. Your Redmi note 3 mic Problem is solved. Its happening because of “Ok Google” service. Now your friends can easily listen to you without any disturbance.
This is a serious problem and just insane that is has not been fixed. I have the Redmi Note 3 Pro and Calls and talking is fine
Now recording anything at High Levels it sounds like a wave effect, both mics are on even if the top is covered same issue.
Its as if there is a threshold somewhere on the noise cancellation that after a certain decibel it tries to correct and auto compress and fails Large.
This must be software as it is leaving both mics on instead of having an option to turn one or the other or BOTH off and or on.
Using an acoustic guitar is pointless, I purchased this phone for the price/performance ratio and thought the audio would not be an issue while recording, it is now useless as it was used to get music ideas down for songs, record band in practice for ideas and live situations it is absolutely impossible and upsetting this simple feature has not been fixed. Back to rotary phones and 4 tracks I suppose.
So far 2 out of 3 Redmi note 3 SD i puchased for my self and friends have this problem of mic not working in calls. On speaker phone it is OK. Tried all the "fixes" I have found on various sites but none have worked. Have not tried one of the fixes as it requires installing TWRP and rootingand the owners are not happy for me to do this for them. Rebooting sometimes fixes one off them briefly but just fails again after 1 call . On the MIUI forum there are countless people with this problem on both chipsets with no fix
i have buy redmi note 3 on a month ago, now i have updated MIUI 8 and i face mic issue(other person can't hear me), done every thing but not able to resolve this issue, pls someone give permanent solution on this.
Interested to know if anyone has a solution for this. I have moved to CM14.1 to try and fix it but am still having this issue.
using the phone with closed MIC2 hole like described above
This solution works for me for Nougat:
Use a root explorer like ES Explorer to edit /system/build.prop
Find the line :
ro.qc.sdk.audio.fluencetype=fluence
Change to:
ro.qc.sdk.audio.fluencetype=none
Solution
NO ROOT REQUIRED. Simple Solution.
With me it worked using the soundabout app, just set up "phone call audio" by selecting wired headset (with mic) option.
Once done you can uninstall the app if you want. Cheers!
Hello all, so, the solution for the recording sound problem is the use of soundabout? in my redmi 3s I applied the fix.zip and it is solved, but in the RN3? just using this app?
Thanks!
Juerwotow said:
Hello all, so, the solution for the recording sound problem is the use of soundabout? in my redmi 3s I applied the fix.zip and it is solved, but in the RN3? just using this app?
Thanks!
Click to expand...
Click to collapse
Did it worked?

Noise reduction in video and call (SD)

Hello,
i have problem probably with noise reduction - when i record video in quite room, audio is ok,
but when background a little bit noise, i hear only some scratches, sometimes a quiet voice ...
The same situation is when i record call, barely hear voices... is there any possibility to change settings in noise reduction?
I'm using aosp, on miui there where only problem with call recording...
Is qualcomm have something similar to mtk engineering menu? Maybe some settings in build.prop?
I think it's a problem of the secondary mic (it is located next to the headphones port) which is used for noise cancellation. I haven't experienced an issue with video recording yet (because I haven't recorded any video) but I have problems with call quality. Every time I place the phone a little far from my mouth I hear complaints that the other person cannot hear me, which wasn't an issue with my older phone.
The temporary solution I have found is covering the secondary mic with my finger (thus disabling it). Also from what I've found in the internet there are some other phones with the same problem and there are ways to disable the secondary mic through software but I haven't tested it yet. Here are the links I'm talking about
https://forums.oneplus.net/threads/fix-call-quality-issue.284449/
http://forum.xda-developers.com/goo...ue-nexus-5-t2538979/post52006598#post52006598
I repeat that I haven't tested this fixes myself and I don't know if they are compatible with our phone.
Thanks for answer,
when i was looking for a solution, i saw tread from one+ but i was counting that is fix directly for our model.
Firstly i change build.prop - and now testing, in audio platform i dont have such line, solution from nexus same situation - dont have those lines.
Hello..
I have problem with background noise during audio call.. because of that noise.... I didn't talk with person who is in call..

microphone gain is too low and sound stops during video recording

Hello.
I am running CM14 (almost stable and VERY fast!) on my SE Ray.
Using Adrian's fantastic ROM 'lineage-14.1-20170514-UNOFFICIAL-LegacyXperia-urushi'.
VERY GOOD work, really !!!
JUST the following 2 problems I noticed (point 1 also at cm13):
1.) The microphone sensitivity for audio and video recordings is generally much too low. (not for calls!)
Which Android system file sets the mic gain? I would like to modify this setting. (or does this adaption work in another way?)
2.) Always after about 30...40 seconds of video recording the sound signal is not been recorded anymore. Just silence then. Really strange. There is no error message.
Does anybody of you know about this phenomena as well? Who could help to fix this bug?
Does anybody know about AdrianDC? He doesn't respond.
Is there still any developer supporting SEMC 2011 devices?
Thank you very much for any help!!

microphone gain too low + sound stops during video recording

Hello.
I am running CM14 (almost stable and VERY fast!) on my SE Ray.
Using Adrian's fantastic ROM 'lineage-14.1-20170514-UNOFFICIAL-LegacyXperia-urushi'.
VERY GOOD work, really !!!
JUST the following 2 problems I noticed (point 1 also at cm13):
1.) The microphone sensitivity for audio and video recordings is generally much too low. (not for calls!)
Which Android system file sets the mic gain? I would like to modify this setting. (or does this adaption work in another way?)
2.) Always after about 30...40 seconds of video recording the sound signal is not been recorded anymore. Just silence then. Really strange. There is no error message.
Does anybody of you know about this phenomena as well? Who could help to fix this bug?
Does anybody know about AdrianDC? He doesn't respond.
Is there still any developer supporting SEMC 2011 devices?
Thank you very much for any help!!

Question Popping/crackling sound during calls on multiple apps [SOLVED]

Every couple of minutes I am getting a loud pop/crack sound during normal calls and the same behaviour on Whatsapp and Viber calls.
I tried both on speaker and without and the result is the same. I am running all the latest updates. The adaptive sound is disabled.
Also tried Stealth Audio Player to hear both the external and internal speaker on Youtube videos and I can't reproduce it except sometimes it pops when a video is started. I also tried recording my mic and it sounds clear without this popping.
Is there anything else I can try to fix or debug this issue? It sounds like it is trying to record or adapt the sound while on call even if the adaptive is off.
sabotage3d said:
Every couple of minutes I am getting a loud pop/crack sound during normal calls and the same behaviour on Whatsapp and Viber calls.
I tried both on speaker and without and the result is the same. I am running all the latest updates. The adaptive sound is disabled.
Also tried Stealth Audio Player to hear both the external and internal speaker on Youtube videos and I can't reproduce it except sometimes it pops when a video is started. I also tried recording my mic and it sounds clear without this popping.
Is there anything else I can try to fix or debug this issue? It sounds like it is trying to record or adapt the sound while on call even if the adaptive is off.
Click to expand...
Click to collapse
This kinda sounds like the problem I had, but ALLLLL the way back to my Pixel 2 XL!
If you're rooted, you can try what worked for me below -- although, I'm not up to date with Viper4Android (V4A) and I believe it's either EOL or is in the process of being updated to work in x64 architecture or there are newer updated branches or something... But if it's possible to lower the frequencies, you might luck out like I did on the taimen...
I Found a Speaker Distortion Fix
Like many, my phone has the lower speaker distortion on speaker phone calls and general audio, like YouTube, when turned up high. If you are rooted, I have found a solution to all situations except speaker phone calls. I installed Viper4android...
forum.xda-developers.com
Thanks for the help. I can hardly hear any issues while on youtube. There is noticeable pop when videos ending or starting. Some people are reporting motherboard issues with Pixel 7 leading to similar problems. I am trying to find if it is a hardware or software issue.
After further investigation it looks like interference. If I disable the mobile data and WIFI it seems to be a lot better. After 16 minutes call it was a very faint pop if at all. Does it sound like it needs a motherboard replacement or a future patch might fix it. Update: still happening regardless of connectivity on both the inner and outer speaker. I am going to RMA for motherboard replacement.

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