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Unwanted dynamic range compression/ducking of audio on Android (lemmy.ca)

submitted 7 months ago by [email protected] to c/[email protected]

10 comments fedilink hide all child comments

I've talked trash about Bluetooth for years (and rightfully so, often) but I finally did some detailed testing and determined that it appears to be my Android phone causing this particular effect. Android 10, Sonim XP8.

The best track I found to replicate the effect was Griz - Wicked due to the massive bass hits that come in around 1:00 really exaggerating it.

When the bass hits on Android, some sort of compressor kicks in and vocals and everything else get crushed FLAT, resulting in an awful effect where the volume fluctuates, the bass is weak, everything is garbage. This has resulted in crap audio in my vehicles for a couple years now unless I'm listening to the FM radio.

I paired several BT devices that I had blamed for the effect to my PC, and they sound fine playing this track. Both PC and Android are using the same codec, "High Fidelity" A2DP with SBC.

It doesn't matter which player I use on the phone, Ultrasonic and BubbleUPNP playing local copies or Youtube Music Vanced streaming, the compression is present on all of them.

Anyone know what's going on here or want to try to replicate it?

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[–] [email protected] 0 points 7 months ago (1 children)

Maybe turning off absolute volume switch in dev options.

[–] [email protected] 0 points 7 months ago (1 children)

Missed your comment somehow. Unfortunately I tried that awhile ago as well as "Disable A2DP hardware offload" with no effect from either.

I'm actually considering calling the manufacturer and asking what they did to it

[–] [email protected] 0 points 7 months ago (1 children)

What brand it's your device?

[–] [email protected] 0 points 7 months ago (1 children)

It's a Sonim XP8, they're an ultra-rugged industrial manufacturer. I'm a farmer and tradesman so I'm kind of stuck with them, we can't get the ruggedized Samsungs here in Canada unfortunately.

[–] [email protected] 0 points 7 months ago

Maybe you would like to check out the line BISON by a Chinese brand called UMIDIGI, I had used that brand and they are pretty neat.