Noise in speakerphone if sound playing on lo volume level

[AlexandrKozlovskiy]

Issue type

User interface

Device

xiaomi redmi note 9 s (probably any xiaomi/poco/relmi devices)

crDroid version

crDroid 11

Exact version / Build date

crdroid 12.9 (20260418)

Bug description

When something is playing and we have minimal hearable sound volume (e.g 5%),we can here some annoying noise,if we bring device to our ear. It probably actual for any stream type - accessibility,music,etc (about accessibility and music i sure exact,but for other streams,i think,it actual too).

Steps to reproduce

1. set music volume on minimal level,e.g 5%
2. play some music/video without headsets and/or earphone using any way.
3. Hear,what except sound playing you hear some noice.
4. start to increase volume - sound volume will be increase,and noice level will be decrease.

Relevant log (logcat/build log)

No logs.

Screenshots or videos

No response

Solution

Today i ask to google ai,how to solve it,and ai advice to me put at file /vendor/build.prop two lines:

audio.offload.disable=1
ro.audio.flinger_scaler.deep_buffer=false

After rebooting of my redmi note 9 s noise almost disappeared.

Additional context

No response

Acknowledgements

• I've checked device is officially supported and that no support is provided for unofficial devices (for device specific reports and not source related).
• I'm running latest version available on crdroid.net for this device and that the device is still maintainer supported (not flagged unsupported on download page)
• I have searched the existing issues and this is a new and no duplicate or related to another open issue.
• I have written a short but informative title.
• I filled out all of the requested information in this issue properly and understand that not doing so will automatically result in closing of ticket.

[AlexandrKozlovskiy]

I checked my solution on sound playing (not only accessibility),and it seems,it not works. Yes,i use dobe atmos,but i think,what without it we will have the same result,because i switched on it,because someone advice me to do this to fix this issue,but after switching on this,noice wasn't disapeared. You can use almost the same steps to reproduce via headset (3.5 mm connection). In attachment you will see an example of video,playing of which on lo level of volume you will noticed this effect. Github not allowed load mp4,so i pack this video in zip.

5208799052254191147.zip