Noise reduction in video and call (SD) - Xiaomi Redmi Note 3 Questions & Answers

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..

Related

noisy audio recording

Rooted stock I9300XXLFB (international) version. The audio recording is very noisy. I tried several applications for video+audio recording and audio only recording but the noise is always there (EDIT: except of call recording where the noise is ok but overall recording quality is low, of course). Here are two examples taken with the stock Camera application (with the audio track taken out of the resulting mp4 using ffmpeg). I was hoping that the latest fix from radeonxt might help but it is perhaps even worse (more noise from the lower frequencies seem to appear) - the first one (before.aac) is before the fix, the other file is after applying the fix. Both of these were recorded at night in a completely quite room.
before.aac
after.aac
Is this a general S3 problem or is it something specific for my S3? Any sugggestion how to fix it?
I tried 2 other things.
Noise removal in audacity worked pretty well. Of course, this was a very simple spoken word example and it would probably not work well with eg quite background music but still it shows that the problem might simply be no noise reduction while recording audio.
Then I recorded a fake call (using Call Recorder) - and the noise is not present there. Of course, it is a much lower quality (8000Hz at 6.4 kbit vs 48000 Hz at 45/80 kbit) but still it shows that a software fix might be possible. However, strangely enough (at least for me), the noise is not even present if I turn off call noise reduction in the call advanced options:
mediafire.com/?5liar18ekjt5afm
(sorry for not providing a full link but it seems that suddenly I am not allowed to include links??? I get an error message that new users cannot post links - strangely, I was allowed to do that 10 hours ago)
Anyway, the only conclusion I can make is that is seems likely to me that a software fix is possible.
However, first I am wondering, can somebody confirm having the same levels of noise in audio/video recording? If the problem is in my device then I'd rather return it - I certainly want to use the S3 for recording videos from time to time and it is close to unusable for me at these noise levels...
Any input highly appreciated!
javm said:
I tried 2 other things.
Noise removal in audacity worked pretty well. Of course, this was a very simple spoken word example and it would probably not work well with eg background music but still it shows that the problem might simply be no noise reduction while recording audio.
Then I recorded a fake call (using Call Recorder) - and the noise is not present there. Of course, it is a much lower quality (8000Hz at 6.4 kbit vs 48000 Hz at 45/80 kbit) but still it shows that a software fix might be possible. However, strangely enough (at least for me), the noise is not even present if I turn off call noise reduction in the call advanced options:
mediafire.com/?5liar18ekjt5afm
(sorry for not providing a full link but it seems that suddenly I am not allowed to include links??? I get an error message that new users cannot post links - strangely, I was allowed to do that 10 hours ago)
Anyway, the only conclusion I can make is that is seems likely to me that a software fix is possible.
However, first I am wondering, can somebody confirm having the same levels of noise in audio/video recording? If the problem is in my device then I'd rather return it - I certainly want to use the S3 for recording videos from time to time and it is close to unusable for me at these noise levels...
Any input highly appreciated!
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same problem as the S1. wait and hope that voodoo sound for s3 will be out soon...
SexyIceCream said:
same problem as the S1. wait and hope that voodoo sound for s3 will be out soon...
Click to expand...
Click to collapse
If I knew this is a general S3 issue then I could just wait and hope voodoo for s3 is out soon indeed
However, so far I have not found anybody either confirming or denying the noise on his s3 (I do not personally know anybody else with S3), so I am wondering whether it is not a problem specific for my device...
If anybody with S3 could make some audio recording (eg using the Camera application) under similar conditions (just a few words in a quite environment) and compare the noise level or post the recording here, that would be a huge help... but any report (I think/I don't think I have the same problem) or comment would definitely help me too...
I have just found a few S3 video recordings on youtube that are significantly less noisy than mine, eg http://www.youtube.com/watch?v=sfsdxx7dK8k (even though he is complaining about audio, it is still much less noisy than what I get)
So I guess either there are different versions of S3 with different microphones/drivers or my microphones/drivers are not working properly. Anybody has an idea how could I find out what is the case?
Anybody? Any idea, suggestion, comment?

Can someone check voice record quality

I decided to try Sony's answering machine feature. I recorded a greeting. When I played it back it sounded like I was talking through a towel or something. I called my girlfriend and she said I sounded fine, so I don't think it's a mic issue.
As a check I downloaded 2 different voice recorder apps and both record with the same muffled sound.
Could you guys try and let me know. I'm on the most recent firmware 17.1.A.2.55.
Sent from my D6503 using Tapatalk
Really no one? It'll take 2 minutes.
Sent from my D6503 using Tapatalk
Some new info to report.....
I'm hoping a dev reads this and can shed some light.
People have been complaining in certain situations that they can't hear me on their end. Usually in noisy environments (on my side)
I downloaded "Easy Voice Recorder" in an effort to run some more testing. This particular voice recorder lets you override the phone's default for
1) noise suppression
2) echo cancellation
Turning off noise suppression makes a huge difference. Still sounds like **** compared to every other phone I've had in the last 5 years but it's improved greatly.
Thinking back, the times when people complained about the call quality on my end, I'm pretty sure my Z2 noise suppression is to blame.
Two things then:
Someone please download "Easy Voice Recorder" and test how a recording sounds. Then disable noise suppression in settings and test again.
Secondly, does any dev know of a way to alter the default noise suppression functionality?
Again, as I have divulged in several threads, I am unlocked, rooted and have lost my DRM keys. If this is not an issue for anyone else I'm wondering if it could have something to do with that...someone please take a minute and test this for me..Thanks.
Hi I got similar issues. Look at my thread, "Bad call Quality".

[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!
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Did it worked?

Lenovo P70 Primary and secondary mics switched

My lenovo P70-A have 2 mics one of them on top for noise cancellation , and onther on bottom for recordings and phone calls.
Now for a very long time evertime im having a phonecall , the person on the other side keeps saying "WHAAAAT??" and later tell me my phone's sound is low they can barely hear me
I tested it using a video recording and found out that the upper mic near the ear-speaker is the primary one in which i can hear myself clearly and loudly in the recording
I searched everyone but i couldnt find any answets regarding switching the mics back , or canceling the upper mic so the bottom mic becomes the primary
I also tried all sort of things like restarting my device , formating it , switching off noise cancelation from the call settings , nothing worked!!

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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