Bluetooth call volume is too low - MTCB Android Head Units Q&A

I rarely make calls in my car, so I do not know if this was much of an issue on my older head unit*, or if it was a symptom prior to root.
I have a new unit from Pumpkin - MTC8-KLD6-V2.81
Rooted with Malaysk's latest ROM
My phone (HTC M8) is connected through bluetooth. Music plays just fine through the system.
When I make a call, however;
1) Music Stops and head unit goes silent (not a problem)
2) I hear a bit of static (I have had low volume static since I upgraded to Malaysk if the head unit is on and nothing is playing)(again, not really a problem)
3) Phone starts to make a call.
4) Static suddenly goes away, as if the volume was suddenly turned down
5) I can barely hear the phone ring through the head unit.
I have tried turning up the volume all the way on the phone (volume on the phone seems to do nothing when in a bluetooth call) and turning up the head unit. If I have the head unit all the way up, I CAN hear reasonably well, but that's at a volume of 30 when everything else plays loud enough at 5.
I have looked for different setting on the phone and on the head unit and have found nothing. I have adjusted the Factory Settings -> Audio, but that changes bluetooth as a whole and make the music play too loud.
I would say that the issue is is similar to switching the phone from "regular" (where 1-10 is set for being near one's ear) to "speaker" (where 1-10 can be heard across the room) and the phone is telling the head unit to stay at "regular".
Actually, on my first head unit the problem was just the opposite and phone calls were always way too loud.
Anyone have ideas on other settings I should try?
Thanks

I think there are options in the factory settings are for individual volume controls.

singlecell83 said:
I think there are options in the factory settings are for individual volume controls.
Click to expand...
Click to collapse
There are, but the option is for "Bluetooth" in general.
Bluetooth itself is fine, and I can listen to music from my phone through Bluetooth at whatever level I choose. The problem is that when it switches to phone (dialing out or coming in) the volume drops drastically and I have to turn the head unit's volume up all the way to hear at all. That means the music from Bluetooth will come back at speaker (or at least ear) damaging levels once the call ends.

If adjusting the BT volume is not enough, test with others volume settings lowering/raising some of them.

the norm is the hands free on these units are not the best and there are some mods out there on the forum..

Related

Annoying background static on stereo BT headset

Hi all,
Just got me a Sony DR-BT10CX bluetooth stereo headset. I'm new to these things, so I have a bit of a newbie question. The sound is quite good, much better than the ones that came with my HTC Touch (obviously), but there's a considerable static in the background, that seems to increase when I increase volume, but only when regulated on the headset itself. If I increase volume on my Touch (in WMP, or volume slider), the static doesn't seem to increase. I was just wondering if this is normal in these headsets? This headset sells in Holland for just under E100,-, so not really expensive, but not really low end either. Could it be a faulty headset or crappy design?
All thoughts and experiences very welcome...
Thanks,
Driekus
A2DP question
Might be a silly question, but have you tried turning the volume on the Touch up to 80% and turning the headset's hardware volume setting down??
Some A2DP stereo headsets have a particular setting they work best at..
Failing that, you may simply have a headset with firmware that really isn't perfectly compatible with your PDA...
Good luck,
Andy
www.pressdigital.com.au
Support Team
As a matter of fact the volume on my touch is currently up to 100% as is the one in WMP, so that I can keep the volume setting on my headset low, but that's not really how it should work I think. Besides, incoming calls are now very low volume, so I have to adjust the volume on the headset everytime a call comes in (and quickly lower it when I hang up in order to prevent hearing loss...) and I tend to miss appointment-announcements by MS Voicecommand because of this as well.
I guess the headset isn't perfectly compatible with my Touch, as sound sometimes skips (which is even more annoying because it doesn't happen all the time) and my pda doesn't automatically connect to my headset (solved with A2DP-plugin, see http://forum.xda-developers.com/showthread.php?p=1503123#post1503123), but I'm not sure whether the background hiss is because of this too.

sound profile changes from vibrate to ringer on its own

i keep my phone on vibrate all day at work. i also listen to music. i use klipsch S4a II's with the android specific in-line button. if i just use my headphones to listen to music, everything is fine. but as soon as i press the inline button to pause or double click to skip a track, my phones sound profile changes itself from vibrate to ringer. needless to say, if im not paying attention and i unplug my headphones and get up from my desk, my phone is no longer on vibrate and has rung at inappropriate times in a meeting. my note2 used to do this but fixed itself at some point. not sure if it was a software update that fixed it or a setting somewhere. ive looked all over and i dont see anything on the note3 to adjust to change this behavior. anyone else with this problem?
i guess im the only one with this problem then?

No sound on bluetooth when the volume is at 10% or lower.

Hi,
As the title suggests my 5T appears to be muted on bluetooth when the volume is at 10% or less. This doesn't happen on speaker or audio jack so.
I've looked around and can't find any other instance of this. I've tried messing about with the "Bluetooth absolute volume" setting but that doesn't make a difference. It's happening for all bluetooth devices so it's nothing to do with the devices themselves.
I've attempted to up the volume steps within gravitybox but that does nothing (my understanding is OOS doesn't allow this to be changed?)
This has only been an issue since I updated to 8.1.0.
Just to add to this I've just found that if I put the slider to loud (bottom) and kill spotify and open it again I can then hear sound at the lowest volume setting. If i then put my slider to silent (top) I can hear sound still. I can the adjust volume around the low levels but the moment I go above 10% and back down I can then no longer hear the sound unless I repeat the earlier steps.
Any ideas?

Bluetooth Audio Volume Jumping Around On It's Own After Call/Assistant?

Haven't seen this specific issue answered yet - if its a duplicate somewhere a point to the right thread would be appreciated.
For whatever reason over the last couple months, the volume on my pixel 2xl will jump way up (or way down) when on bluetooth either after a call or after using google assistant. It doesn't seem to happen everytime, but just now I was listening to music on my bluetooth headphones at my desk and got a call. I took the call on the headphones by answering the phone and then as soon as I hung up, the volume on the phone shot up to 100% which was not enjoyable.
This also happens when connected to my truck (Ford SYNC) or my running earbuds, and it can also crank the media volume way down (happens frequently in the truck) after a call, at which point I have to manually adjust the volume again. The same activity also happens if I activate google assistant and issue a voice command, but in both cases it is not 100% consistent. It appears like the system is trying to dynamically change the volume for some perceived situation, but it sucks at it.
I also use A2DP app for volume control settings and app launching for all my connections, but I have used that since I got this phone 2 years ago and none of the settings have changed.
Anyone had similar behavior and found a fix? It is really annoying when my music goes so low that I can't even hear it in the truck after a call, and equally annoying when I have headphones on and it cranks the volume up and tries to blow out my eardrums.

PX6 Dasaita low volume during calls

Listening to music I have no problem with sound, but when someone calls and I take the call through the headunit I can barely hear them. Anyway fix to this problem?
In the factory advanced settings (the 126 password) there is a tab for various volumes - radio, music, bluetooth, phone etc. Check the values there in case phone or bluetooth are set too low.
Which volume is necessary to increase?
Changing bluetooth volume in that menu has no effect on calls, and there is no option like "voice" or "phone". Anyone else figure this out? It's almost unusably quiet even at maximum volume. The slightest road noise makes the other party inaudible.
Are you're front channels connected?
On some of these chinese units bluetooth phone audio as well as nav audio is routed to the front channels only.

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