[Q] New audio Routing + Bluetooth support from Rhod - Touch HD General

Hi,
I was checking the Rhodium Android forum, and found the following developing work:
http://forum.xda-developers.com/showthread.php?t=1076884
Is anyone able to check if this may work on our blackstone?
I'm happy with the FRX6, but audio shutering and lack of BT make it not suitable for daily basis.
If someone make this fixes to work, pls post a tutorial!
Thanks

Audio stuttering has been 'worked around' ages ago, see http://forum.xda-developers.com/showthread.php?t=999544
As for BT, i don't know about that. In the second post there's something about Broadcom an TI chips, so if the Blackstone has a Broadcom chip why not just try it out. The instructions for the setup are all there in the thread
Let us know how it turns out

ypsmav said:
Is anyone able to check if this may work on our blackstone?
Click to expand...
Click to collapse
Why can't You try on your phone?

i had test libhtc_acoustic with acoustic supported kernel.Sound working but only on call speaker but not on loud speaker or audio jack.Need for viruscrazy to update the lib and kernel to support all devices.Audio stutter still there.Still no clean fix when u disable battery service during listen to mp3.You will end up listening to mp3 not knowing your phone going to die.Audio stutter will be fix when there are no resource and excessive service running

Related

A2DP for WM5 coming soon...

I'm looking for a way to redirect my TomTom voice instructions from my MDA Vario through my Parrat CK3300 BT carkit sounding on my car-speakersystem by using the bluetooth stack. Now Parrot claims this isn't possible due to a phone limitation. I agree and think it's shortage of Microsoft WM5. Now I've looked up some info about Bluetooth Audio Distribution and found the following:
Advanced Audio Distribution Profile (A2DP)
AKU 2.0 for Windows Mobile 5.0 (for both, Smartphone and Pocket PC), which is expected to be released early next year (2006), will also includes support for the Bluetooth Advanced Audio Distribution Profile profile which is designed to transfer a stereo audio stream like music from the device to a headset or car radio.
A2DP is already implemented into the Samsung SGH-i300 Windows Mobile 2003 Second Edition Smartphone, however this isn't based on Microsoft's A2DP implementation but Samsung added it itself.
(Refer to http://www.theunwired.net/?itemid=2779 for more info concerning this subject.)
So if this article is based on true facts, it means that Microsoft will soon release a patch for all WM5 based devices, which enables them to receive all audio (e.g. TomTom voice instructions) through the bluetooth stack.
Somebody knows more about this subject and if it's true that after having AKU 2.0 installed, you can hear the navigation instructions through your carkit or headset?
Many thanks,
Youri Festen
there is a facility on this forum that will allow you to switch audio to and from the bluetooth, not high quality or stereo but standard quality.
There is ?
Been loking around in the threads for quite a while, but didn't find a replicatable solution...
Here you go
Tried all kind of files, but no go...
All i want is ALL audio over the Carkit (Supertooth2). That is TomTom + Phone.
I don't care if i have to trun of the carkit to return audio to the phone. But i don't want to have to reset or something.
I have a XDA (Himalaya) btw. Still with Rom 1.72 00WWE 15/03/2004 (Ext Rom 1.72.125)
Tried all these :
BA_OEM_AudioGW.CAB
BA_WM5_Voice_Dialer_2.cab
BCHS_FOR_POCKET_PC_OZONE[1].ARMV4.CAB
Broadcom Corporation BT-PPC AV.cab
Broadcom Stack + Switcher + Icon.zip
BroadcomCorp_BT1.0.0.3900.cab
BTAGExtModule-2.zip
btagextmodule.zip
btaudio.zip
MS-BT-107.ARMV4.CAB
SCO settings all BT.txt
voicedial2.rar
whoa it worked
i know im reaching here, but really wanted to try to stream to the new cingular 2125 (aka hct). downloaded and ran the app with my iphono steroe headphones (luv em), got intresting results.
it worked. ran the app, pushed the button on the headphones, got music. call came in, answered (with auto answer) talked, and on hangup it went back to music. however, if i ran another app on the phone such as voice tag in contacts to initiate a call, it brought in the call, but on hangup went back to the speaker. had to run the toggle on again to get headphones working, not elegant - always want more - but im a happy guy til a2dp comes out for mobile 5. thanks!
try looking at this
http://www.pdaphonehome.com/forums/showthread.php?threadid=54951&perpage=20&pagenumber=1
might be what you need
Scollinguk said:
try looking at this
http://www.pdaphonehome.com/forums/showthread.php?threadid=54951&perpage=20&pagenumber=1
might be what you need
Click to expand...
Click to collapse
Try reading and understanding what you read before posting. See the post of dalamario that is the BTAudio on/off tool !
Is this goingt to be anter shout and wild guesses about what file or tool should "really"work ?
I tried all so called "easy" fixes, hell, i've even got a whole dump of my registry, cut through all the BT + Audio and BT + Headset threads, here and on PDAPhonehome, Howardsforum, and the reduced-to-user-bla-bla on pocketPC-club.nl.
And still zilch.....
Ow, and don't think i'm someone who wants easy answers... Think again, i've been around quite a while on PPC forums and the lot....
What i do want/like is usefull answers ans clues on how this BT and Audio stuff works, beut even after reading some on MSDN i can't find a solution yet....
That's why i jumped in on this thread, i'm not going to reinvent the wheel if some allready has the solution: Tomtom and Phone audio over BT
So i'll stop writing now, and continiu searschin for a solution... There must be one...
Sorry mr high horse, wont bother trying to help next time just in case i might not be right, but then if everyone did that no one would answer anything.
The Wizard can do system Audio over bluetooth.
This has been proved with the easy hack that allows you to activiate voice dial using a BT headset.
http://forum.xda-developers.com/viewtopic.php?t=29837
MS Voice Command leaves the Audio Gateway open after initialising, whilst Voice Dialler closes it.
So maybe try installing Voice Command and doing the hack in the above referenced thread, and then see if you can launch Voice command from your car kit. This should leve the gateway open and allow all system sounds to stream to your BT kit until you hit the button again.
jpiek said:
Try reading and understanding what you read before posting.
Click to expand...
Click to collapse
Try keeping Himalaya talk in the Himalaya forum then. Posting questions about devices in the wrong forums just causes confusion.
Scollinguk said:
Sorry mr high horse, wont bother trying to help next time just in case i might not be right, but then if everyone did that no one would answer anything.
Click to expand...
Click to collapse
Not Mr High Horse, but didn't you look at what you where posting ? You should know it linked to the same file, right ? If not, you really would just be 'shouting' ...
It's just that i've been reading XXX threads, and just about everyone comes up with the same, useless, files... Like nowbody really knows how it works and waht should be done to make Audio over BT possible...
We here are all trying real hard for months now, you see....
Just a little patience. Test version of Qtek 9100 ROM with A2DP already exists. It works with I-Phono bt-stereo, for example. So I think it will be released by March.
[CpD said:
bob]Just a little patience. Test version of Qtek 9100 ROM with A2DP already exists. It works with I-Phono bt-stereo, for example. So I think it will be released by March.
Click to expand...
Click to collapse
where is it? i want it! i need it!
ready to test.
Can't share it.
[CpD said:
bob]Can't share it.
Click to expand...
Click to collapse
spoil sport
i won't tell anyone,
got motorola ht850 headphones.
have one question whilst here,
when i am on the underground the headset give a beep to tell me i have no network signal? you may not know the answer but would this over ride the bluetooth stereo signal?
p.s. send me your bank details for the transfer :wink:
[CpD said:
bob]Just a little patience. Test version of Qtek 9100 ROM with A2DP already exists. It works with I-Phono bt-stereo, for example. So I think it will be released by March.
Click to expand...
Click to collapse
Do you think that when it works with I-Phono, it will also offer us the navigation voice instructions through BT-headsets or carkits? Hope so!
Can't test it with car navigator.
if audio streaming is enabled, i would have thought you should be able to hear navigation commands.
i have used the bt audio switch that started this thread to hear tomtom commands through my headset, and it works fine.
saves me explaining to my 84 year old dad why yoda is giving me directions :lol:
aliendad said:
if audio streaming is enabled, i would have thought you should be able to hear navigation commands.
i have used the bt audio switch that started this thread to hear tomtom commands through my headset, and it works fine.
saves me explaining to my 84 year old dad why yoda is giving me directions :lol:
Click to expand...
Click to collapse
It's nice.... I'd really like Tomtom over my carkit... Ohh, the XDA was so much easyer just soldered a Ground and Left/Right channnel into my TomTom/Leadtec connector, and plugged it in to my JVC Front-in line...
I bought the Qtec 2020 because BT seemd so much easyer

answering machine (without recording, I have read others)

Well from reading other threads I learned that an answering machine software is not possible due to lacking ability to record from the radio audio output (on most phones, possible on univ?).
Well then how about not recording, but automatic pickup and sending prerecorded audio? Would that be possible? Like in: someone calls my phone->software picks up and plays back prerecorded message to caller "I'm in a meeting, please call back at 5pm" ->software hangs up.
Possible or not? Who would be willing to write something like this?
I think there's the same issue - the phone audio path is seperated from the PDA audio path. Read Odeean's posts on TAPI and his frustrations. However, the http://teksoftco.com boys seem to have hinted that this may in fact be possible anyway.
It may be possible I suppose, by writing specific drivers, but I don't think any of us have ever tried I guess.
V
We'll keep you updated with what can be done altough the system is not built to support this kind of features. Firstly because in the US recording audio on phone conversation is ilegal so MSFT doesn't supports this and onestly i don't see HTC being able to offer this kind of support.
Also what Vijay outlined is correct... but we have a few more ideas that we are curently testing...as i said we'll post it if we succeded.
Cheers,
Raul
i believe that it is not a hardware limitation.
The sound from the gsm is not analogue. It passes through the OS somehow, otherwise how is the audio transmitted to the bt hfree?
I don't believe that the transmition of audio (from gsm) to the bt hfree is done only by hardware.
Please comment
andrew_sh is making a good point there. Maybe something can be done by "faking" bluetooth data input?
We have a working answering machine on Himalaya.
See last ROM from TofClock...
Good point made by Andrew. A new bluetooth headset driver or a fake one might do the trick. Cross your fingers guys.
The OS has evolved since Himalaya and HTC has restricted access to drivers by creating a locking mechanism and also the signing process is a hop to pass.
Guys, from my understanding and a poll I've run:
http://forum.xda-developers.com/viewtopic.php?t=40100&highlight=telephone+poll
it doesn't seem like many people have succeeded in recording calls, and those that have are generally using the Himalaya only. The gigabyte can, but it has custom hardware.
We've discussed spoofing the bluetooth audio path before by using a dummy driver and receiver, but mamaich has stated that the audio path for the bluetooth is in hardware only, and seperated from the interceptable paths in the OS.
Rain (for those who don't know, is one of the genii at http://teksoftco.com) - if you have any new ideas, may I ask you to PM me?
Odeean, Mamaich and I have had numerous discussions about this and I'd be interested to know how your research is going. I read that you guys have experience at low level audio driver work (great work on the speakerphone btw!), and I think that might be a good way to go. There is certainly some OS control of the audio path (speakerphone, mute, headset<>bluetooth etc), so I've thought about this way...
V

Improve sound quality via BT A2DP

Does anybody know how to improve sound quality for playing music over A2DP profile with Parrot handsfree? On Rhodium i applied some tweaks for quality improve and it was clear and nice to listen, but Leo is not so nice to hear
Thx a lot
I had to tweak my diamond too, looked for tweaks on the HD2 but couldnt find them, but the sound quality is way better on my HD2. I dont think it needs the tweeks tbh.
If i take both, TP2 and HD2 to my car, let play the same song and im switching between HTC's then has got TP2 much more clear and brilliant sound, without any quiet cracklings from tweeter speaker like it is on HD2 :-(
Same problem here, sound quality for a2dp is not what it should be. I tried adding the LineSpeed registry setting, it did improve the overall quality, but did not remove the cracking noise - and in my case I still have frequent skipping and gaps in the audio playback. Have not yet had a reply for Tech Support, and if/when I do, I don't think it'll be a very intelligable one...
Yop, i think too, that the answer will be unusable, or maybe they tell you that u should do a Hard rst :-D
First time i connected it to HF and let music play i thought that is a bad quality song, but it isn't :-(
Anyone idea?
I know there are some settings to definately improve the sound of A2DP. I've added them on my previous HD, and worked perfectly after that! I just found some things you might try (I just applied them myself as well, but havent tested them yet; I'm almost sure they'll work):
http://forum.xda-developers.com/showthread.php?t=308752&highlight=A2DP+settings+bitpool
If I'll find the previost post which I applied in the past on my HD, I'll let you know. If the one I just posted will work, I'll let you know as well of course, because the litteral and figural crappy sound of A2DP is something I hate as well...
Edit:
Take a look at those settings as well from J-A-J-O at page 6:
http://forum.xda-developers.com/showthread.php?p=1677577#post1677577
Again, I don't know exactly if it were those settings, but they sound familiar to me. I'm also busy trying to get the best sound quality via bluetooth out of my HD2
More info about the settings:
http://forum.xda-developers.com/showthread.php?t=310438
Kind regards,
GreenFrog
The XDA tweaks are rubbish and do not work. I currently have a call out with HTC.
I have removed all reg tweaks from my HTC and now can get A2DP working on my parrot ONLY in the following situation:-
(1) Reboot HD2 (hold end key and select off. then switch on)
(2) Allow to connect to Parrott (will connect handsfree first)
(3) Open bluetooth from settings and select stereo audio and select connect.
(4) select handsfree and select disconnect.
(5) Press PLAY on the parrott kit
By doing this I get no skipping at all and the quality is good. I have no tweaks running.
This is obv crap and is why I have been speaking to HTC all week.
Steps 1-5 have to be strictly followed for this to work.
The BT tweaks mentioned on this forum do not work. They only appear to work as you have rebooted. After using the HD2 for a while and then connecting A2DP, skipping will occur again.
Try steps above and it will work.
Interesting! I'll try that on mine. Greenfrog all of those links and bitpool settings relate to the Microsoft Bluetooth stack. However the HD2 uses the Widcomm stack so those registry settings can't be made.
I too am fed up of the bluetooth sound quality. How can they assume we'll be happy with this mediocre sound?! I can't see why with a 1Ghz processor it skips.
Have you guys tried the A2DP with the latest 1.61 ROM? I'm still on 1.43....
When I find my 'goldcard' that I made I'll try it on 1.61 and let you know
We'll get there in the end....this is really my only bugbear with the HD2, so it would be good to get it fixed!!!
There got to be a way!
I, too, am really p***ed off by the bad audio quality i get using stereo blutooth. It's really an issue with the HTC HD2 and apparently no pro reviews pointed it out!!! I use it with the sony DR-50 which are one the best A2DP headphones out there, but the sound is horrible Please help...
I'm too suffering from the A2DP situation...
The Linespeed registry hack helps me on some devices ( HKML\Software\Widcomm\Plugins\AV add DWORD Linespeed with value between 64 and 512, the higher the better sound but higher probabilty for skipping).
With Linespeed = 320 sound is great and I have no skipping with a Sony DR-BT160AS. But: My Motorola S9 badly skips unless I have it very close to the HD2. Linespeed = 256 is working ok with both devices...
BUT:
I also have a blueLino A2DP Receiver which has a bad quality on both settings, at least on some songs. That's really disturbing.
Just a quick update, I've just flashed to 1.61 and it makes no difference. Default A2DP sound quality is unacceptable. Grr
purnelld said:
The XDA tweaks are rubbish and do not work. I currently have a call out with HTC.
....
The BT tweaks mentioned on this forum do not work. They only appear to work as you have rebooted. After using the HD2 for a while and then connecting A2DP, skipping will occur again.
Try steps above and it will work.
Click to expand...
Click to collapse
-----------------------------------------------------
Well, first I have to say I don't have the 'skipping' issue at all. I have my HD2 connected via bluetooth to my Pioneer DEH-P7100BT car radio. I have a clear connection when calling, but when playing music via bluetooth, I have the 'hissing' issue.
Next is that I have to admit that when I changed the settings according to my previous solution, did work a little, but not as it supposed to. When I had my previous Touch HD if found a link which worked perferctly for me! When I changed to those settings, the hissing were gone completely and the sound quality improved to CD level. Although, I'm still searching those ones again for my HD2 at the moment....
So, conclusion this far is that it totally depends on the hardware which you are connected to as well.
Regards,
GreenFrog
@Greenfrog:
I guess the bitpool settings which worked well on my HD as well, only work when using the MS Bluetooth stack. The HD2 uses the WIDCOMM Bluetooth stack, I haven't found a noticable difference.
The LineSpeed registry setting does improve overall audio quality, but I still have skipping and playback gaps. Very poor performance for the performance beast the HD2 is. I urge everyone to report this to HTC (I did) - this is really unacceptable.
I will also report this to HTC. I am so frustrated by it tbh
As Moses posted...I had linespeed set up on my TP2 and the sound was great, but now i have no time to test it now, can someone other test regitry key?
Bluetooth settings
Can be found here HKLM\Software\WIDCOMM\
A2DP Tweak Provided by R_phAn (Please note this will not work with all devices)
As we know from the past, each device has it's own preferences and capabilities (So you'll have to play around)
Managed to improve soundquality by adding DWORD 'LineSpeed' to HKLM\Software\WIDCOMM\Plugin\AV\ with a value of 320.
it is posted here for TouchPro2: http://forum.xda-developers.com/showthread.php?t=524655
Edit: I tryied it tomorrow morning and it is still the horrible quality, poor music quality and during the call skipping :-/
jonboyuk said:
...all of those links and bitpool settings relate to the Microsoft Bluetooth stack. However the HD2 uses the Widcomm stack so those registry settings can't be made.
Have you guys tried the A2DP with the latest 1.61 ROM? I'm still on 1.43....
When I find my 'goldcard' that I made I'll try it on 1.61 and let you know
We'll get there in the end....this is really my only bugbear with the HD2, so it would be good to get it fixed!!!
Click to expand...
Click to collapse
Okay, thanks a lot for this update! I was really unaware about the different stack, so I don't have to look further for the the previous links anymore... I'll try to add linespeed as well to see if it works with my Pioneer car radio. I hope it will...
There should be an answer for sure for this issue. I also cannot understand why it have to be this difficult. The previous solution did work very well. Why have they changed to the other stack anyway? Does someone know that?
I'm running the 1.48 ROM btw.
GreenFrog
I found one thing, i'm using SPB Radio for online streaming, when im listening in my car streamed radio then the sound quality is excelent...? How is that possible?
That's a very good question.
I experimented a bit with different quality settings during mp3 encoding. I found out that there indeed is a connection between the quality settings of the mp3 file and the badness of the sound quality, at least to a specific degree.
The most important setting seemed to be the stereo setting. If I set a song to "Joint Stereo" its by far better than normal stereo, although not perfect, yet. That's very confusing.
Do you know the settings of the radio channels you can stream with good quality? Maybe that would be worth a test.
--Update--
So I had a predictably useless response from HTC. Namely 'have you tried unpairing and repairing' and 'your device may not be fully compatible, please check our website for a list of compatible devices'.
Useless indeed. Their compatible devices amount to 3 items! The phone is either A2DP or it isn't. There are no compatibility options - it's happening to us all.
So, I haven't mustered up the energy to continue onto the next pointless exchange of basic trial and error possibilities. No doubt their next reply will be "have you tried rebooting the phone"...
Anyway, I digress. I noticed something today. I put on a new album to my SD card and out of nowhere the skipping was worse than ever. Audiomanager is always on the lookout for new songs as you may have realised. When you have music playing, a small circle rotates to show the player is searching. During searches whether or not you've introduced new mp3's to your device, it always makes the skipping far worse. When my circle had come to a stop, then the audio was fine....with very rare pauses and skips.
Still there but much less obvious.
Well that's my latest update and I will continue my investigation. I wonder if this skipping occurs in other music programs? ie wmp or pocket player? Has anyone tried?
Great work, guys. Nice to see a lot of people looking for a solution. I REALLY want to get this A2DP thing working right, it is bugging me a lot, and I'd like it to be fixed when I'm going on vacation (I'll be driving to two straight days, and would love to listen to my own music then). That'll be in about six weeks, so there's still some time left.
I'll try SPB radio myself, see if that causes the same amount of skipping. It could be that it is not the BT link causing the skipping and pauzes, but the audiomanager itself. That would be a bummer, because fixing that is probably way beyond what we can do here, and we'll have to hope for a HTC fix or a custom rom with an older and better working version of the audiomanager.
In my search for possible solutions, I found the priority of the A2DP can be altered. I've added the reg Dword value "Priority256" to HKLM/Drivers/BuiltIn/BtA2dpSnd, with different values. If the value is too high (150+), nothing changes. Set it too low - I tried 60 - and BlueTooth fails to start altogether. I've now set it 149, and it seemed to work, but haven't done extensive testing to see if the skips/pauzes don't return. Will get back on that.
jonboyuk said:
--Update--
(...)
I wonder if this skipping occurs in other music programs? ie wmp or pocket player? Has anyone tried?
Click to expand...
Click to collapse
I've tried PocketMusic, qualitywise no difference. I don't remember if it had the same skipping / pauzes problem, but the problem for me was it doesn't work with the AVRCP, so I can't play/pauze/ff/rew with my remote, and having to use the screen while driving is a pain - I've mounted my device quite high. I was really hoping to use the inbuilt musicplayer

Bluetooth Stereo Sound Quality Not Good

All,
Does anybody have any fixes regarding the sound quality when using Bluetooth A2DP protocol? I use my Evo to mate with a Bluetooth receiver so I can listen to Rhapsody over my home stereo. The sound quality is flat. The high frequencies are not present. It sounds like a bad quality MP3. I know that its the A2DP causing the quality issue as directly connection (through 3.5 jack) is awsome.
The Apple 3GS A2DP sound quality was awsome. I am not sure why the Evo is not sounding good. Any help would be most appreciated.
Thanks,
Lance
use the cyanogen rom--this uses a bitpool of 53 giving you the best bluetooth quality possible. the stock/sprint/htc bluetooth drivers are set for a bitpool of 32
Is there any other ROM that has the bit pool set to 53?
Lance
Nope all Sense roms use HTC's ****ty low bitpool setting. This is why I'm running CM as well it's the only rom I can A2DP to my Sony Head unit and get good audio. I attempted to contact HTC about this issue here's the juicy details
Here's my initial question
I have terrible static when streaming music over A2DP on my HTC EVO to my sony mex-bt2800 car radio. If I use CyanogenMod 6.0 which uses a open source bluetooth stack my A2DP is crystal clear to my radio. I have used logcat to look at whats going on I dont know if its a bitrate problem or a bitpool problem or if my radio isn't in your acoustic database.
http://forum.xda-developers.com/showthread.php?t=708265&highlight=bluetooth+bitrate
Here's the response I received
Although the android software has been updated to be more compatible with Bluetooth headsets and car kits. Most of the time a Bluetooth manufacturer will have a list on there website stating devices they have found compatible, but this is not always the case. From the information on your issue it seems that your device is simply not fully compatible. The only thing we would be able to recommend would be to try another headset.
Then my response back
I would like an Engineer to read my question if possible since I don't think you fully grasp what I'm saying here. First My EVO's Bluetooth A2DP WORKS 100% clearly when using a Open Source ROM which implements Bluez Bluetooth stack http://www.bluez.org/
When I run your Sense UI ROM the Stock ROM you release which uses your own proprietary Bluetooth Stack I get static in the background so you cant really say its my phone now can you? Its your implementation that's not working properly. I'm not about to try every car stereo till I find one that works with the EVO when I know my stereo can work perfectly with my phone when using a properly coded open source Bluetooth stack.
Here is some extra info from a logcat that shows how your Bluetooth makes a connection through A2DP and what I believe is too low of a bitrate or bitpool setting
http://forum.xda-developers.com/showthread.php?t=708265&highlight=bluetooth+bitrate
PLEASE DON'T GIVE ME A ANSWER THAT YOU JUST READ FROM A SCRIPT. I would like a true response from someone who understands and can grasp my question fully like an engineer or a developer, when you give me a generic response of oh your Bluetooth headset isn't compatible keep buying new ones till you find one that works, that really makes me upset since you didn't even read my question it's a car stereo and there not cheap.
I await your educated answer.
And there final bull**** reply
We apologies for any inconvenience you may be experiencing. We will document your concern for review in development of our upcoming devices and future software updates. The situation is still an incompatibility with our device and your car kit weather on software or a hardware level. Unfortunately at this we have no further information beyond what has already been provided.
P_Dub_S said:
Nope all Sense roms use HTC's ****ty low bitpool setting. This is why I'm running CM as well it's the only rom I can A2DP to my Sony Head unit and get good audio. I attempted to contact HTC about this issue here's the juicy details
Here's my initial question
I have terrible static when streaming music over A2DP on my HTC EVO to my sony mex-bt2800 car radio. If I use CyanogenMod 6.0 which uses a open source bluetooth stack my A2DP is crystal clear to my radio. I have used logcat to look at whats going on I dont know if its a bitrate problem or a bitpool problem or if my radio isn't in your acoustic database.
http://forum.xda-developers.com/showthread.php?t=708265&highlight=bluetooth+bitrate
Here's the response I received
Although the android software has been updated to be more compatible with Bluetooth headsets and car kits. Most of the time a Bluetooth manufacturer will have a list on there website stating devices they have found compatible, but this is not always the case. From the information on your issue it seems that your device is simply not fully compatible. The only thing we would be able to recommend would be to try another headset.
Then my response back
I would like an Engineer to read my question if possible since I don't think you fully grasp what I'm saying here. First My EVO's Bluetooth A2DP WORKS 100% clearly when using a Open Source ROM which implements Bluez Bluetooth stack http://www.bluez.org/
When I run your Sense UI ROM the Stock ROM you release which uses your own proprietary Bluetooth Stack I get static in the background so you cant really say its my phone now can you? Its your implementation that's not working properly. I'm not about to try every car stereo till I find one that works with the EVO when I know my stereo can work perfectly with my phone when using a properly coded open source Bluetooth stack.
Here is some extra info from a logcat that shows how your Bluetooth makes a connection through A2DP and what I believe is too low of a bitrate or bitpool setting
http://forum.xda-developers.com/showthread.php?t=708265&highlight=bluetooth+bitrate
PLEASE DON'T GIVE ME A ANSWER THAT YOU JUST READ FROM A SCRIPT. I would like a true response from someone who understands and can grasp my question fully like an engineer or a developer, when you give me a generic response of oh your Bluetooth headset isn't compatible keep buying new ones till you find one that works, that really makes me upset since you didn't even read my question it's a car stereo and there not cheap.
I await your educated answer.
And there final bull**** reply
We apologies for any inconvenience you may be experiencing. We will document your concern for review in development of our upcoming devices and future software updates. The situation is still an incompatibility with our device and your car kit weather on software or a hardware level. Unfortunately at this we have no further information beyond what has already been provided.
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Well I commend you for trying. This is something that makes me want to tear my hair out so I would love to see this resolved as well.
good on ya mate.
anyone know how to get another bluetooth stack on stock rooted 2.2?
I asked Flipz a while ago but I don't think he's looking into it. I also asked Netarchy he said he would look into it sometime but that i shouldn't hold my breath since he hadn't even looked at the code yet. HTC has released the source for their Bluez implementation so all we need is a dev willing to look into adjusting the bitpool setting.
This is a HUGE problem. I am flashing CM6 right now. HTC I am very disappointed with you..
The cyanogen rom also has great dsp equalizer
CyanogenMod will also make you a tropical island than transform your EVO into a jet plane and take you there ;-)
But in all seriousness, yeah, CM6 has BT fixed. One of my friends nagged Cyanogen about it last month, and he patched it right away.
I wish somebody could help us by increasing the bitpool on the Bluetooth driver. The Evo would be so much more enjoyable (for me at least) if the sound quality was better thru A2DP.
lancer123 said:
Is there any other ROM that has the bit pool set to 53?
Lance
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It would be nice if there can be a patch of some sort...
Just an update today I got a call from HTC customer service since i gave a poor review of my experience on a survey they sent me. Talked in great detail about our problem with the Bluetooth stack told him about the bitpool setting how its 53 on CM and 35 on there roms. So hopefully on the next update well get a fix for the Stock Sense UI rom.
^^LMAO!!! dont blv the hype
I read that the CM6 ROM has this issue fixed. I have also read reports that the ROM email client doesn't support word wrapping (which I really do need). Can anybody confirm this?
Also,
Can anybody in ROM land please create a patch or an update to their ROM which increases the Bitpool to 53? I understand that the Bluetooth driver code has been released.
Thanks
bump............
any roms address this yet?
greenail said:
any roms address this yet?
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maybe:
* Added DSP Manager (Digital Signal Processing) to boost audio and equalize sound for Headset, Phone Speaker and Bluetooth devices.
wont let me post links, but you know what to do:
forum.xda-developers.com/showthread.php?t=793471
I am using the latest OTA, rooted, along with the latest pandora and the bt audio quality is much better. I have the motorola t605.
With the initial 2.2 update bt quality sucked but now it's better.
Sent from my PC36100 using XDA App
mchlwvr614 said:
I am using the latest OTA, rooted, along with the latest pandora and the bt audio quality is much better. I have the motorola t605.
With the initial 2.2 update bt quality sucked but now it's better.
Sent from my PC36100 using XDA App
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That was a streaming issue, not a bitpool issue.
The BT audio was a lot better on my TP2 when I updated the registry bitpool to 48 from 32.
I wish they would fix it.

[Q] Bluetooth help required

Hi guys,
I have been searching for the answer to my issue, but can't find anything... sorry if it has been covered elsewhere
I have just rooted my X8 for the first time and have installed kuyaDROID V2.3.108
Everything seemed to be working brilliantly and I was so pleased with it. However I have now noticed that my bluetooth isn't working quite right. My car has bluetooth built in as standard and until installing kuyaDROID I never had any problems. Now I can still connect to it, get into my contacts, make and receive calls, however I can't hear anything. The people I call can hear me, but nothing comes out the car speakers.
Has anyone got any ideas as to what is going on ?
Thanks
Boolandy
Anyone ?
Is this only happen when in call?
how about using another Bluetooth features?
coz I change audio manager when enabling FM radio, maybe something is missing.
I know that other custom rom is using the same source, and having a same problem.
(there are new thread like this)
so maybe those are problem.
I can look for it, but I can't test it, I don't have Bluetooth device.
kuyagaol said:
Is this only happen when in call?
how about using another Bluetooth features?
coz I change audio manager when enabling FM radio, maybe something is missing.
I know that other custom rom is using the same source, and having a same problem.
(there are new thread like this)
so maybe those are problem.
I can look for it, but I can't test it, I don't have Bluetooth device.
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Click to collapse
Thanks for replying Kuyagaol.
Yes this problem only happens during a call... both making or receiving a call that is.
When you say you changed audio manager, is that the DSPManager installed as part of your ROM ? If so then I will try changing some settings in there... maybe that will fix it ? I did notice again last night that when trying to make a call the car speakers (via bluetooth) are making noise... almost like the volume is very low and you just get a slight 'hiss' noise. So maybe the volume settings on the audio manager are low ?
I will have a play with the settings in DSPManager later, unless you tell me this isn't going to help.
I just want to say what a brilliant ROM this is, and that my phone is 100% better now (apart from bluetooth) and would recommend it to anyone !
Im not sure if this have to do with dspmanager, but u can try it.
here is the thing, we are not use libaudio from latest cm.. due to FM radio we change audio manager in framework.jar based on minicm source.
if u ever try racht hackdroid did this happen to?
coz that rom did not change his audio manager.
but if in that rom this bug exist then the problem "maybe" in libaudio or somewhere else.
kuyagaol said:
Im not sure if this have to do with dspmanager, but u can try it.
here is the thing, we are not use libaudio from latest cm.. due to FM radio we change audio manager in framework.jar based on minicm source.
if u ever try racht hackdroid did this happen to?
coz that rom did not change his audio manager.
but if in that rom this bug exist then the problem "maybe" in libaudio or somewhere else.
Click to expand...
Click to collapse
Right I have tried changing some settings in dspmanager and my bluetooth is now working !
So there doesn't seem to be any issues with your rom here... thank you so much for your help and guidance
I have one more question though... I see you have created a newer version of your rom... can I install this and not lose all my settings ? or if I install it do I have to set everything back up again ?
Thank you

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