Change apps audio channel? - MTCB Android Head Units Q&A

Something seems to have messed around - I'm not able to listen to music (MP3 or Radio) while iGo is active... Navigon is working fine, but iGo seems to use the same audio channel as Radio. Is there any possibility to change that?

airchicken said:
Something seems to have messed around - I'm not able to listen to music (MP3 or Radio) while iGo is active... Navigon is working fine, but iGo seems to use the same audio channel as Radio. Is there any possibility to change that?
Click to expand...
Click to collapse
I have a Pumpkin head unit KD-C0224 and encountered the same issue before.
Then I contact Pumpkin and the customer service suggest enter*the*settings-》GPS, then change the GPS sound mode to “Mix” option and setup the GPS mixing ratio. Finally, solved.
You can ask the seller for help.

Related

GPS (Co-Pilot) commands via bluetooth?

I have the O2 Orbit with Co-Pilot software that came with it. I connect the Orbit via bluetooth to the intercom system on my motorcycle. The phone connects automatically every time and I can receive calls as I ride, and listen to WMP (though I prefer to use my ipod).
I set the Co-pilot running the other day but none of the commands would come through the bluetooth connection into my helmet. Do I have a setting wrong or will this not work?
Thanks in advance.
You want btaudio installed to the unit IIRC, have a read of this thread where there is also a download for the plug in to enable the nav voices out through the headset - Mike
http://forum.xda-developers.com/showthread.php?t=306642&highlight=audio
mikealder said:
You want btaudio installed to the unit IIRC, have a read of this thread where there is also a download for the plug in to enable the nav voices out through the headset - Mike
http://forum.xda-developers.com/showthread.php?t=306642&highlight=audio
Click to expand...
Click to collapse
Thanks mike.
I have installed it but it doesn't seem to route the audio through the bt to my helmet, but I'll try again later. Do I need to activate btaudio every time I want to use it or will it run automatically?
I couldn't find the 'plug' you mentioned above...
you need to turn the app on if you go to the bluetooth menu and while the helmet is turned on touch and hold the helmet bluetooth name and select set as bt audio if this is not present the use mikes method it all depends on wheather the helmets bluetooth is compatable with the artimis
Garneth said:
Thanks mike.
I have installed it but it doesn't seem to route the audio through the bt to my helmet, but I'll try again later. Do I need to activate btaudio every time I want to use it or will it run automatically?
I couldn't find the 'plug' you mentioned above...
Click to expand...
Click to collapse
Two ways to do this - get a bluetooth headset that supports A2DP streaming ( I have a Sony DR-BT30Q) then all audio comes through the headset.
Alternatively, use VJvolubilis (http://www.vijay555.com/?Releases:VJVolubilis) - you'll need to set up a shortcut to run it with -agon to stream all audio through your bluetooth device. It worked for me on a BMW car kit!
Thanks guys.
Alix, I'll try that when I get home. The b/t must be compatible as I can receive phone calls on the bike and listen to WMP.
TT, I have no choice but to keep the headset I have as it is part of the wired intercom system and is fitted into my helmet. The b/t connectivity comes through a dongle supplied by the intercom manufacturer and sits beneath the seat with the intercom controller. It works fine with some apps, but just not Co-Pilot.
Not sure what this means :
TangerineTractor said:
...you'll need to set up a shortcut to run it with -agon to stream all audio through your bluetooth device.
Click to expand...
Click to collapse
Thanks again.

XDA Orbit 2, TomTom and Bluetooth

Hi,
I have the following problem:
I am using XDA Orbit 2 and a car-radio Maqma MQ-106BT. This radio offers Bluetooth-connection to my XDA. It supports the BT-headset (A2DP) and the handsfree profiles.
After pairing the car-radio is shown with both active profiles in the settings-screen of the XDA.
I want the car-radio to play the radio program and to give the TomTom-voice using the car-speakers. The system works very well for the phonefunktion. But if I start TomTom the radio sound stops and only the voice of TomTom is to be heard but nothing between the TomTom comments. It seems, as if TomTom uses the BT-headset Profile and thus the radio is always waiting for sound from the XDA.
Are there XDA-settings which would help me or is there a possibility to force TomTom to use the handsfree profile, thus only muting the radio if there are comments from the navigation?
I hope here are some experts who are able to help me!
Best regards from Luebeck
Micha
Hi,
I can't believe it: Not even one answer?
Is it really such a special task? I have thought that here in this forum there are only XDA-specialists???
Please, if there is someone who has an idea, please help!!!
Regards
Micha
Bump, I have a similar question in the Athena forum. Best guess I have is to mess with the registry to force the tomtom commands to not go through A2DP, but through HCP (phone signal) - that way priority is assured, but you may have to physically hang up the signal to get back to radio. At least the signal would start automatically....
As far as i know to allow the radio to be played in between tomtom voice commands you would need a fixed wired connection and also a car radio system that allows line in input to be switched on and off. The problem isnt the PDA the problem is the radio system in the car.
As far as i know to allow the radio to be played in between tomtom voice commands you would need a fixed wired connection and also a car radio system that allows line in input to be switched on and off. The problem isnt the PDA the problem is the radio system in the car.
i have the same issue with the tytn2, i cant get my tomtom sound over my radio.
I'd appreciate it if anyone could help!
fwiw, I am still searching the forum for a solution. I have found some old bluetooth posts, that may hold the key:
http://forum.xda-developers.com/showthread.php?t=281977
in particular, message #2 of thread, concerning BTAudioNav hack:
http://forum.xda-developers.com/showpost.php?p=1046077&postcount=2
Some of this info is dated, so I haven't tried anything yet, and as the posts indicate, it takes 2 to tango. The WM6 device may be doing everything right, but the equipment you are pairing to may not be able to be configured correctly....
Update, BTAudioNav is not working, I assume that it is for PocketPC and I am running WM6
?!? Tomtom commands
[email protected]
I have the same problem.
Phone: HTC tytn2
Bury Wired Handfree
Perfect Sound Quality for Calls but: No system Sound, no TomTom Sound.
Yesterday i drive on the Highway, Tomtom was on and a call was incoming but the tytn2 was rebooting by him self .... AND NOW IT WORKS !
I hear all tomtom commands! I don't no why but it works!!!
Update, it seems that tomtom goes over the a2dp signal and not the handsfree profile.
If it was handsfree profile, it would cut into the car stereo music. A2dp doesn't have priority though with most car stereos.
Had I known this, I wouldn't of purchased tomtom....

[REQ] Audio Stream via Bluetooth Handsfree?

Hi,
I am looking for a way to stream audio from the Touch HD to my Car. Unfortunately the cars built-in audio system doesn't support bluetooth. But there is that handsfree-thing, which works really great with calls. So I wondered, if there is a software solution that streams my music from the phone as "incoming call" to my car?
I've tried "acbToggleBT" and "BTASP" and both didn't work in the Car, but they did work with a bluetooth headset.
It would be really great if somebody knows, finds, posts, programs or has an solution.
Thanks in advance!
Greets from Bavaria, Germany
berkley
I can't remember but there was an option to route normal audio to the bluetooth handset in my HP iPAQ which is missing from HD.
Believe me music streaming to HSF device will be as good as listening to AM radio on poor reception. Go get a bluetooth A2DP profile audio headunit like Sony - MEX-BT2500 (this is the one I use and works like a charm).
Thanks for your reply.
Perhaps I took the wrong words to explain what I am looking for.
The thing I want is a piece of software that "imitates" an incoming call and sends the audio from S2P to the handsfree of my car.
Maybe this explanation is a bit better...?
[edit]
have you tried BT Audio
it's a paid app
acbToggleBT always worked for me
try this
There are 3 apps
btaudio on
btaudio off
bttoogle (on/off)
i made a cab file for it
camro said:
try this
There are 3 apps
btaudio on
btaudio off
bttoogle (on/off)
i made a cab file for it
Click to expand...
Click to collapse
Excellent. I can get this to work via bluetooth headset.
Unfortunatley this didn't work in my car (which is what I believe the OP wants).
http://220.232.214.116:8088/attachmentes/Day_071224/31_270270_b7dcc_pxdxa.btaudio.zip
I use this application, works terrific!!.......enjoy
ausi - does this work on a car stereo i.e. does it emulate an incoming phone call?
binning said:
ausi - does this work on a car stereo i.e. does it emulate an incoming phone call?
Click to expand...
Click to collapse
All i can say is this based on using it on my HD with WM 6.1 & 6.5 (Dutty ROM):
Once you install the program and then execute it (Press On):
It will transfer all Music & Audio from Movies (Core Player) etc. to my BT Nokia Headset or my BT Car Speakerphone (Motorola T305), i do not have a Radio BT set so i can't tell you, you'll just have to try.
This Cab solved my problem as the basic BT HD ROM sertting only transfers the Phone audio while this little cab transfers ALL audio, so i would presume that it may help you with your BT radio, you can always uninstall the cab if it doesn't work for you.
There is NO emulation invloved here!!??
Good luck!
Hi Ausi, tried on my Nokia BT car handsfree but no joy
The handsfree only accepts an incoming call as stated above so some sort of emulation may be needed. Would be happy if someone knew about something...
ausi said:
This Cab solved my problem as the basic BT HD ROM sertting only transfers the Phone audio while this little cab transfers ALL audio, so i would presume that it may help you with your BT radio, you can always uninstall the cab if it doesn't work for you.
There is NO emulation invloved here!!??
Good luck!
Click to expand...
Click to collapse
Funny... my HD does the reverse. I get de BT audio but on the BT phone I got nothing but static...
I've got a Sony Xplod bluetooth radio in my car.
When I start up it automatically connects to my HD, however it only connects as handsfree rather than both handsfree and BT stereo.
I have to go into comms manager and bluetooth settings, then select and hold on the xplod in the device list.
A menu comes up asking what I'd like to connect as, and I pick stereo, then repeat for handsfree.
Give that a go. Holding on the device to bring up the menu gives you the BT profiles the device is capable of, so with a bit of luck stereo/headphones will be an option for you.

DVR + Bluetooth Music

Hi.
I have Joying Headunit and when i use the DVR recorder which is in Malaysks ROM, i cannot use bluetooth to stream music.
If i stop the DVR then i can.
Anyone else having this problem?
Hi,
I have KLYDE MTCB headunit, with standard ROM.
I believe I have the same or very similar issue. i.e. I cannot stream music via bluetooth when front camera is in use with DVR recorder app.
I'm not sure if it's the app itself, or the camera in use that is the problem (yet).
I don't want to complicate things, but I also don't know if this problem has always existed, or whether it began occurring after updates to system, after updates to all apps, or after installation of additional apps.
aniqpirzada said:
Hi.
I have Joying Headunit and when i use the DVR recorder which is in Malaysks ROM, i cannot use bluetooth to stream music.
If i stop the DVR then i can.
Anyone else having this problem?
Click to expand...
Click to collapse

TTS Voices do not mute the music when GPS speaks

Hello everyone,
This is not my first post on this issue. Sorry for the long post, but I am sick of this issue.
I have an Eonon G2110F head unit - RK3188 / MCU: MTCB-KLD2-V2.67 / KitKat 4.4.4.
It is stock (with only simple "factory setting" root). This is the "universal model".
Everything functions correctly. But I have an issue only with part of the GPS function.
I have a confirmed "good" iGO Primo version from a reputable GPS forum (v2.4+). I have installed it with maps/pio, regular voices, and TTS voices on my phone and tables. It work 100% correct, the way it is supposed to (both when installed to internal memory and external memory). What I am specifically testing for is how my phone and table function when I am playing music at the same time that the GPS is running (on both the stock mp3 player or Poweramp player).
When I set iGO Primo to use its regular voices, the music mutes when the GPS announces directions, then the music un-mutes once the announcement finishes. This is 100% correct. When I set iGO Primo to use its TTS Pro voices (using the Android default TTS engine), the music mutes when the GPS announces directions (which now include street names), then the music un-mutes once the announcement finishes. This is 100% correct. So as you can see, my iGO Primo build is a good correct working version.
However, I can not say the same thing when I install the same iGO version on my head unit (on the GPS card slot). Overall the app works. Both the regular voices and the TTS voices work and announce directions correctly. But once I am playing music at the same time, that is when the issue starts (regardless if its the radio / stock mp3 player or Poweramp / iPod / CD - I have tested them all). When I set iGO Primo to use its regular voices, the music mutes when the GPS announces directions, then the music un-mutes once the announcement finishes. This is 100% correct....,
However, when I set iGO Primo to use TTS Pro voices (using the Android default TTS engine), the music does not mute when the GPS announces directions (which now include street names). Instead, both the music and the TTS voice are playing at the same time. The TTS voice is much lower in volume and is hard to hear over the music. This is not correct. I have tried several other iGO Primo versions that are know as good working builds. These all work on my phone and tablet. But they have the same issue on my head unit once TTS voices are used. I have even tried by installing the app to the internal memory or the external SD card slot of the head unit.
I feel there is some kind of disconnect between the app and the MCU audio stream once the TTS voices are used. Remember, when the regular voices are use, the app and the MCU audio stream both work in the correct way. But as soon as I switch to use TTS voices, then the MCU audio stream does not mute when the GPS announces directions.
Over the past year, I have read so much that my eyes are bleeding. I have tried almost everything. I have even worked with senior members at the GPS forums. I am sick of this. When iGO Primo is installed on my head unit it is laughing at me to my face. So now I am ready to go "Ninja Assassin" on it.
Is there any other solution out there to force the music to mute? Is there an Xposed module that can deal with this issue? Is there some kind of modification that need to be made (on either the app or the head unit). Otherwise, I will need a full professional developer to look at this and create a solution (for hire $$). I have seen several, several posts on the internet with similar issues - yet no solution. So I am ready to hire someone and pay to have a solution developed (for the good of the community).
Any help will be greatly appreciated. Again, sorry for the long post.
Thanks,
ggee
Tried using some TTS voices in other languages to see if the issue is related to the voice you're using?
Tried using another music player?
I have the same Eonon G2110F and use iGo Primo (one of the latest versions) with a dedicated Italian TTS voice and have no problem while listening to the radio (not tried iGo and music player together with active navigation).
themissionimpossible said:
Tried using some TTS voices in other languages to see if the issue is related to the voice you're using?
Tried using another music player?
I have the same Eonon G2110F and use iGo Primo (one of the latest versions) with a dedicated Italian TTS voice and have no problem while listening to the radio (not tried iGo and music player together with active navigation).
Click to expand...
Click to collapse
Hello,
My issues happens with any music applications. It will happen with the stock MCU music apps (Radio / iPod / CD / Music ). And it will happen with third party music player (like Poweramp).
I have had people reply before who say they have no problems. But when I ask follow up questions and dig deeper, I discover they either don't use TTS voices, or don't play any music while driving (which is why they don't know of any problems). Or I find that they run the app from their phones/tables and bluetooth the audio/screen to the head unit. There is always something different about how they use it that explains why they do not have an issue. For example, they find out that they don't really have a legitimate iGO Primo version - instead it is some generic GPS app with an iGO skin and very limited features (yes, these do exist).
- Can you please let me know the specs of your head unit (firmware version / MCU version / Custom Rom if any)?
- Do you have any major software modifications on the head unit?
- Are you using the stock Android TTS Engine or a third party TTS Engine (like Vocalizer/Nuance)?
- Can you please let me know what version of iGO Primo you have and where you got it from (check the Settings/About screen in iGO for the exact version)?
- Can you share the TTS voice file, and the sys.txt file with me (this way I can test the setting on my head unit).
-If you can share your whole iGO Primo build with me that would be even better (minus your maps/pio/dem/buildings files)? You can PM if you prefer that way better.
I use a real iGO Primo version in a normal way, on a normal stock head unit. That is why I am asking the above questions. I personally feel there is an issues with the MCU.img that some how causes a disconnect to the android audio stream when using an "outside" TTS voice over the android TTS engine. By "outside" I mean that the GPS card slot is technically a separate memory area on these head units. Since iGO Primo is running from this "outside" memory area, it might be causing an issue, such that the MCU does not see a running TTS voice. Therefore, it does not know to mute the music (but when regular voice files are used, it somehow knows). This is what makes this so strange and freaking annoying.
Thanks again for any help,
ggee
I have the original Eonon MCU and ROM, rooted.
The iGo specific Italian TTS voice has been provided by an Italian iGo user forum, but I don't think the TTS voice matters for your issue.
Obviously no iGo version can be shared...
Anyway, I have never heard of similar problems, at least on the iGo Italian fora.
Maybe it's better to ask on some specific iGo forum, all those fora of course deal with Android head units...
themissionimpossible said:
I have the original Eonon MCU and ROM, rooted.
The iGo specific Italian TTS voice has been provided by an Italian iGo user forum, but I don't think the TTS voice matters for your issue.
Obviously no iGo version can be shared...
Anyway, I have never heard of similar problems, at least on the iGo Italian fora.
Maybe it's better to ask on some specific iGo forum, all those fora of course deal with Android head units...
Click to expand...
Click to collapse
Hello,
Since you "can't" share anything
Can you at least tell me what MCU version you have on your head unit? In this way, I can see if I have the latest MCU version. If your version is newer, I can at least go back to the seller and ask them to send me the same or latest version (and flash my head unit).
For example, this is my version: MCU: MTCB-KLD2-V2.67
What version do you have?
There are many posts on the internet where people mention some type of volume issue with iGO Primo using TTS voices.
Also, can you at least tell me what forum you are referring to. If you have specific forum/post link information that would be better. As I mentioned in my original post, I have read and been to many other forums before. I have tried many things already. This is not me trying to be lazy. But if you have a specific forum, or a specific post - can let me know what it is? That would be of great help.
Thanks,
ggee
gguevara said:
Since you "can't" share anything
Click to expand...
Click to collapse
It looks like that probably you're not completely aware that there are no "legitimate" versions of iGo for private users (maybe except in Israel), so of course I'm not going to share anything...
And for this reason too IMHO this kind of discussion shouldn't be carried on XDA and so I suggested you to better ask on other specialized fora.
That said, the last and final information I can give you on this subject are the current firmware version of my head unit, see the attached images.
themissionimpossible said:
It looks like that probably you're not completely aware that there are no "legitimate" versions of iGo for private users (maybe except in Israel), so of course I'm not going to share anything...
And for this reason too IMHO this kind of discussion shouldn't be carried on XDA and so I suggested you to better ask on other specialized fora.
That said, the last and final information I can give you on this subject are the current firmware version of my head unit, see the attached images.
Click to expand...
Click to collapse
Hi "mission",
Thanks for the reply. I appreciate the info about your MCU version. I have a lesser version, so I will ask the seller to send me the latest official MCU version (not BETA).
I will talk to you soon..., keep your eyes open
Thanks again,
ggee
You can find all the known MCU versions here:
http://forum.xda-developers.com/showthread.php?t=3246386
themissionimpossible said:
You can find all the known MCU versions here:
http://forum.xda-developers.com/showthread.php?t=3246386
Click to expand...
Click to collapse
Hello,
Today I received the same mcu.img version that you have (for my exact KLD2 head unit). I noticed that my stock firmware is newer than yours, but your mcu version was newer than my.
Anyways, I updated the mcu to my head unit successfully. However, this has not resolved my TTS voice issue. It is acting in the same way. The music does not mute when the TTS voice on the GPS speaks. They both play at the same time. When listening to the radio, the TTS voice volume is much lower. When listing to MP3s on the stock MTC Music player, the TTS voice volume is about equal (the same thing when using PowerAmp, except the TTS voice volume is not as low as the radio scenario). Why Does Yours Work and My Does Not???
_____________________________________________________
Anyway,
This goes out to anyone else out there who is willing to actually help me with this (not just empty talk or drop their 2 cents). As I mentioned, I now believe this is an issue with the MTC side of the head unit. Something is affecting the MTC audio stream from acting properly when the TTS voice of the GPS speaks. I have tried everything I can get my hands on. This is so frustrating.
When I use Google Maps on the head unit, it acts 100% correct. Keep in mind that Google Maps exclusively uses the android TTS engine and TTS voices. Additionally, I have installed the same iGO on my phone, and it works 100% correct.
Can someone who is an expert on the MTC function of these head units please help me??? Or can someone point me to the right person(s)???
Do not hesitate to Private Message me if you want to "assist" me.
Anyone else...., Please!!!!!
Thanks,
ggee
There are more than one TTS engine available to try.
Try for ex. latest Vocalizer (Nuance).
Search on the net.
Hi
I think the issue may be that the software for the TTS is run from head unit system and not from the Igo software. The standard voices use the Igo software and Igo mutes the radio or any music. The TTS is actioned by the head unit.
Ok I'm back,
So just to quickly update you on my 2din issue. It is still an issue. Update finished.
Back to my install on my phone, though. As a reminder, I installed the same Igo Primo on my android phone just so that I could test to see if it would have the same TTS Pro voice issue as I am experiencing with my 2din (TTS does not mute music when speaking). I initially reported that my phone installation works 100% correctly when using TTS voices and playing music at the same time. The music mutes when the GPS speaks.
However, I noticed something the other day. When I initially tested with music on my phone, I initially used the default android music play on my Samsung Galaxy phone. This worked fine. But the default music player would also pick up the audio files from the Igo folders and list them within the music library. I do know there is a simple work around in order to stop the default music player from seeing the Igo folder (and not play the GPS audio files).
But instead I started playing music on my phone using the Power Amp player. Anyways, when I play music through Power Amp, the TTS Pro voices do the same thing as my 2din (which is that the music does not mute when the GPS speaks). Yet when I play music using the phone's default android player, this issue does not happen. So now, I have this question and issue to resolve. Maybe this will somehow explain why my 2din also does not mute the music when the GPS speaks (using TTS voices).
Does anyone have an idea on this.?I would think that the audio stream for music would be the same for both mp3 apps. So if I change the audio stream options on the Igo sys.txt file it should affect how it reacts with all apps. Not just one app and not the other. Is this a correct assumption? Does this mean that the default music player uses one audio stream (the same one used by Igo), and that Power Amp used another audio stream?
Any ideas?
Thanks,
ggee
Hello,
I want to pass this along in case there is someone out there with the same issue on their 2din android car head unit. Someone on another forum shot me a private message to try something as a workaround and it seems to have worked for me (I can live with it).
My issue was that when using iGO Primo with TTS voices, the head unit would not mute or lower the volume of music when the navigation voice speaks. It did not matter if I used android's built in Google-TTS engine or another third party engine. However, I did not have this issue when using the normal non-TTS voices (in this case the head unit worked correctly with muting/lowering the music).
So they suggested that I switch back to using the built in Google-TTS engine and the correct language in the android settings of the head unit. Then go into the head units GPS settings and assign the Google-TTS engine as the default GSP application. Doing this will mean that the hard GSP button on the head unit will no longer launch iGO Primo. But that is ok because I can launch it through the iGO icon/shortcut on the screen. Then make sure to go into the iGO Primo sound/volume settings and select the correct TTS voice, with the correct language that matches the language on the Google-TTS engine setting. Then properly exit from the iGO Primo app and reboot the head unit. That's it.
This somehow causes the head unit to function correctly when iGO Primo uses TTS voices. This workaround only works when using iGO Primo with TTS voices. It will not work when using normal non-TTS voices.
If you are using any third party TTS engine (like Nuance or Ivona) and try this workaround, it will not work properly. It will work at first until you shut off iGO Primo or the head unit reboots. When this happens, the settings get lost and you will need to redo the settings each time. But the settings "stick" when using the built in Google-TTS engine.
So far I have not had any issues in over two weeks. I hope this helps anyone else with the same annoying issue I had (look at my first post on this thread for a full description of the issue).
Thanks,
ggee
themissionimpossible said:
It looks like that probably you're not completely aware that there are no "legitimate" versions of iGo for private users
.
Click to expand...
Click to collapse
Not true anymore. IGo is available in the PlayStore.
m00n61 said:
Not true anymore. IGo is available in the PlayStore.
Click to expand...
Click to collapse
Finally!
Thanks for the news!
I am curious if you have gone to the GPS settings in the head unit under settings and modifie the volume setting fade in or out. I put mine to the highest seting and now the volume mute is good. hope this is what you meant and helps.
roscored1000 said:
I am curious if you have gone to the GPS settings in the head unit under settings and modifie the volume setting fade in or out. I put mine to the highest seting and now the volume mute is good. hope this is what you meant and helps.
Click to expand...
Click to collapse
Changing GPS settings didn't help me. Setting gps app to Google TTS only works.
Since the navigation hardware key does not work anymore when GPS app assigned to Google TTS, can the key be assigned to iGO app directly? From Factory Settings menu all keys can be mapped to different functions, but cannot be mapped to android apps. Is there a solution for assigning apps to keys?
yves31 said:
Since the navigation hardware key does not work anymore when GPS app assigned to Google TTS, can the key be assigned to iGO app directly? From Factory Settings menu all keys can be mapped to different functions, but cannot be mapped to android apps. Is there a solution for assigning apps to keys?
Click to expand...
Click to collapse
Use mtc-keys xposed module
I have the same problem with Sygic. TTS voices much lower than the system volume. And no way to higher them up. Sygic i think is only using the default google tts engine.... any idea??

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