When recording sound (to a voice recorder or when recording video), the smartphone uses the functions AGC (automatic gain control) and NR (noise reduction). Try to record and hear that the first few seconds the sound is loud. Then the volume decreases and the noise reduction function is activated. Sounds awful. These functions are appropriate for a telephone conversation. When recording music, nature sounds and the environment, these functions seriously damage the sound.
I tried to edit the Build Prop (lines persist.audio.fluence). No changes occurred.
I tried editing mixer_paths.xml and related files. But my knowledge was not enough. I did not receive any changes.
In addition, it is known that on wileyfox swift with firmware cm-12.1-YOG4PAS33J this problem is not present. On later firmware the problem appeared.
Perhaps AGC and NG are sewn into the driver. Or implemented through audio effects in libraries.
Who knows how to disable these functions?
In advance thanks for the answer. And sorry for my bad English
Hi, I have noticed the sound issue with recording audio on the Swift 2. Have tried two different models and found the same thing. Did you ever find a resolution for this? It's very annoying.
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Hey, I use an LG F60 wich runs 5.0.1 and since i upgraded ( March 10th) the stereo of the microphone disappeared on most of the apps , and i ran a CPU test and said that rear microphone didnt existed when in this app running kk said i had rear mic, i waant someone to help me to change the microphone settings to disable Automatic gain control, bc the mono sound of my micro sounds muffled and dirty, i disabled AGC in one 3rd app recorder, but i cant find a setting to disable it of system, i tried ALSA and Viper4Android, and didn't find nothing related to mic, also in enginer mode Audio settings are not implemented yet. I also tried changing mixer_paths and those files, but i really don't know wich text i have to replace,and i can upload the files here, if someone wants to help me changing it..
Does someone know is there is one specific app or module, (without recovery) that disables AGC? my microphone without AGC in mono sound, sounds very HQ but with it sounds pretty muffled, and in whatsapp recordings is terrible.
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..
Hello,
I've a problem with my Z5c when video/audio recording. There's quite some noise and a ticking sound regardless of how quiet it is in the recording environment.
I've made a loop video of one of my recordings when i've tried testing different settings. Please note that the noise is more easily noticeable when listing to a recording on the phone itself - here's the link youtu.be/AF5EDJtJIMI (new user, can't use outside links). The odd thing is that the sound gain is poor, meaning that when i record someone speaking, standing at 1.5m away from the phone, the voice can barely be heard.
Below is a list of phone settings and tests/results i've performed:
- Android version: 7.1.1 stock
- Mic sensitivity: Automatic (I've tried the rest of settings but none seemed to "fix" my issue)
- During calls: no problem
- Main/Secondary microphone tests (from *#*#7378423#*#*): no noise but the volume is so low
- Various apps for Audio Recording: same issues as the camera
- Various apps for Video Recording: same issues
I've tried searching for similar issues but with no luck - has anyone else encountered this?
Could this be a hardware or software issue?
With respect,
Bogdan
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!!
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!!