Develop Bugs

Nosie With A2DP!!!

Hi I'm new to the site, i had read a lot post about upgrading roms from different companys, i read people describe how good the a2dp quilty is, but the problems comes, i first upgraded the rom to T-Mobile , then i found there are a high pitch nosie, at first, i though it was just my earphone, after i changed it, it still the same, then i upgrade to the QTEK rom, the nosie still comes, the nosie comes as the singer start to sing!!! it makes my so dizzy, i had try to link my BT to my PC, but they sound much different! no nosie plus clearer sound!
the second problem is that when a phone call-in, the ringtone goes via BT rather than built-in speaker???
the third problem is if you set ur BT as both hands free/set and wireless stero, during a connected phone call, if you press any button on the dial pad, all the sound will gone, but the phone is still connected, i found this problem when i using my voice mail?!
also after i update to the non-O2 rom, my phone is no longer accept any MMS, i already config all the setting from O2, is just that i don't have my MMS acount appear on my mail box. i also try the .cab setting file too!
My A2DP BT is i-Tech S35
ROM Version: 1.30.77WWE (QTEK)
Radio Version: 1.09.00 (QTEK)
ExtROM Version: 1.13.188 WWE (O2)
Many Thanks!!!

Was it just me than having this problem???

- I've not the first problem.
- I've the second problem
- I never experienced third problem
:wink:

http://forum.xda-developers.com/viewtopic.php?t=46540
Click on the above link , download the file and run it on your phone, do not alter any of the options, just click next on everything it will fix your MMS problem

thx a ur advice coff... but it still doesn't work, plus i starting to think that the nosie might cause by my s35, due to the campasility.. (sorry can't spell)

Hi MicmiC901,
Yes, it probably is something "locally" with your phone/headset/area/etc, since I also have same experience as asci, meaning;
1. NO, don't have that problem
2. YES, I have same issue (to me this is actually OK, since when headset is connected, I WANT it to only ring in the headset)
3. NO, never experienced this problem
I use the latest Qtek ROM with AKU2 and A2DP, but have never experienced that high-frequent-noise-issue you mention with any other of the A2DP ROMs on my JasJar (TMobile Germany ROM, a custom-ROM from the forums).

so RonnyGydar, which bt headset u using @ the moment? i just try with my friends logitech bt headphone, it get worse than my i.tech, sound get Stuttering , so i think i better change a new bt, would u recommand moto ht-820?

Hi MicmiC901,
Sorry the veeery slow response...but now I have even one more BT Stereo headset...so then you get the "bonus" of even more info in my reply!
I have 3 BT Stereo Headsets, and here is a short summary of experience of them all.
HP BT Stereo Headphones (same HW as the Logitech ones as I understand).
Sound is good, clear, OK bass. Nothing exceptional, but I was very pleased with them. Sound could be a bit higher at the highest volume...if you plan to use then in noisy environments...but not really an issue...since they are quite loud.
Motorola HS820
Soundwise (clarity and bass) very simmilar to the HP ones...can't point my finger on any differences. But they seem actually a little less loud than the HP ones...so with these I struggeled to hear Podcasts when I sat on a bus going through tunnels. The HP headphones are slightly louder, I think.
Bonus of these are the excellent batterylife and miniUSB plug...plus the HP ones do not have a microphone, so the HP ones are only for music. So I would easily chose the Motorola's before the HP headphones.
One minus for me with the Motorola's are that they hurt my ears after a couple of hours of use. ...that at lack of "powerfull" bass, got me to look at the i-Tech BluePRO's...
i-Tech BluePRO
These have very good bass (and they sure look like they should have it too...pretty big earmufflers...with these, you look like you are working at a construction site or something, but the clarity of the sound is actually worse than HP and Motorola...they sound a bit fuzzy.
...but I still use these all the time...mainly for two reasons. One is the excellent bass (I like to listen to techno and trance...and then bass is important, the other is that they isolate outside sounds (due to the enormous padding), so I can have the sound as low as I prefer...and STILL hear all my music without disturbance from other sounds in the environment (like sitting on the bus in a tunnel, or at a noise Gym).
It also seems that there is quite a bit difference in how the different manufacturers implement BT profiles.
My Motorola and i-Tech BluePRO have problems with "Pause/Resume"-button on headset when used with my JasJar (Pause works, but not resume...or opposite...not sure which it was, dont have the headsets with me today)...but the HP ones does not (I tested them a couple of times, and the HP headphones worked all the time)!?
Re-connection after a time without use seems also to vary a bit. The Motorola I can turn off/on the headset, and they reconnect automatically to my JasJar. The i-Tech BluePRO's I must choose re-connect in "Bluetooth settings" on my JasJar every time I want to use them.
The "famous" "lag-issue" everybody experiences I experience with all my headphones in some situations...and it does not seem any better or worse among the headsets. It seems to also be affected by general radio disturbance, since I have a lot of problems with lag at work, but no problems at all at the Gym (which is good for me...since that is the place I am most happy with having my wireless headphones), and some issues at home.
Hope this was of any help!

actually i have the problem micmic is talking about.. it happened when i upgraded my wiz to a newer rom to get the a2dp function. eventually i do not have a bt.stereo -headset yet.. (coming in about 2 weeks) but i have the issues with the sound. it's almost like a bad bitrate or something? ..wierd it is since i remains even if i downgrade my rom. =/

Hi epluribus and MicmiC901,
Is the "stuttering" you both mentioning the same as I call "occational lag"?
IF it is...it you should certainly not have it when you do the following test;
1. Reset your JasJar/Universal (to clean memmory completely)
2. Started listening to music over headset with...
3. The Universal lying on the desk in front of you completely still 50cm from your face
4. You sitting completely still
5. No WiFi on close to you.
...this test is completely overkill...but if it STILL stutters in that "controlled scenario"...well then it must be something different with your Universal or headset HW. Cause I can walk around with my JasJar (also in areas I know there are 5-6 WiFi connections active...like my appartment), and even put the JasJar on the table and walk 5-10 meters away from it...and have no or at least nothing more than an "occational stutter"/"lag".
It seems to be two major factors affecting this "stuttering"/"lag" (from my experiences at least...I have used A2DP a lot with my Universal...couple of hours every day);
1. Universal struggling outputting(RAM/CPU...or both!?)
One help here is to apply the registry "A2DP priority" fix (found it in the forums here).
Another is to close all programs before using it (I usually do not do this...I usually only do it in hindsight when I get the problem).
2. Signal between Universal and headset struggling (obstructions between Universal and headset, WiFi nearby, so forth)
I for example get this problem if I put my Universal in my trouser pocket (I know, I must have big pockets, and walk around, I get stuttering/lag occationally. If I then take it out, and hold it in my hand farily still when I walk...no stuttering. I have found, that when I walk, it is OK to have it in my backpack/rugsack...then for some reason it very rearly stutters...so I usually do that.
But when I walk of the bus at work, and walk into the "campus" of my workplace, which is cramped with radiotransmitters (is norways largest Telecom company)...I get a lot of stuttering, and need to take it out of backpack, and hold it in my hand, at it gets a lot better.
In short: A2DP with the Universal works, but is sensitive to disturbance/obstructions/moving around...and to make it worse, it is also sometimes dependant of the Universal itself struggling with CPU/RAM.
I have BTW had the exact same problems before with Qtek2020 and Qtek9090 (which I got hold of some "A2DP patches", when I had those devices). ...but I really had a LOT more stuttering with those two...so much so, that I never used A2DP with them on a daily basis.
...so it can seem that HTC is getting slightly better on each new device...?
Hope this info can be of some use!
...but it might not...if my assumption at the beginning here is wrong, and your "stuttering"-issue is something completely different than the "lag"-issue I talk about!?

is my P3300 actually A2DP compatible?

Heya,
for a long time i have been looking for some decent bluetooth stereo headset.
now it has come down to two models. well, actually one only
my choice: motorola s9
and the second possibility: Motorola T820
from reading the comments on amazon on those devices i realize that my phone needs to be A2DP compatible to get the best sound out of the headset.
i use s2p as music player and i know it is A2DP compatible... but is real question is: is my phone (HTC P3300 WM6) compatible with this tecnology
also: if you can suggest any other good headsets, please do so.
key features i seek:
- able to use on my phone and pc
- a2dp
- good sound and microphone quality

a2dp not working
Hi,
I have HTC artemis. I recently purchased wireless bluetooth stereo headsets (Jabra bt325)
I cannot connect it to use as wireless stereo. Its working fine as handsfree. After pairing, I cannot see wireless stereo option. Its Greyed. I know that artemis is A2DP compatible.
But i am sure that headset is fine because I tested it with n95 and it worked fine.
Please give me a solution.

Try this:
Start - settings - connections - bluetooth - and add new device
If your headset is already added, use your stylus and press on the bluetooth headset name until the following menu comes up:
Edit
Delete
Set as Hands-free
Set as Wireless Stereo
Choose no. 4

yes it is.
I'm using Dopod M700 which is the P3300 w/o the GPS module.
It works with dell BH200 BT stereo headset and also the o2 BT stereo earphones.
It works on joint stereo in WM5 and since its now running WM6.1 its real stereo.

Dell BH200
Hi thanks for the suggestion even after setting the Bluetoot head set as "set as Handsfree" it did not work, as soon as I receive or make a call the head set goes off, looks like its some compatibility with A2DP not sure, if some one has done some development or found a patch to make this work would be a great help

sameerbs said:
Hi thanks for the suggestion even after setting the Bluetoot head set as "set as Handsfree" it did not work, as soon as I receive or make a call the head set goes off, looks like its some compatibility with A2DP not sure, if some one has done some development or found a patch to make this work would be a great help
Click to expand...
Click to collapse
might be a specific problem of your headset model.
i use a motorola s9 and it's quite nice. fits nice, does not disturb after hours, controls work fine, calling works fine...
BUT (and there's always a but) it has some major drawbacks i found out. while it's still nice to listen music without wires, i encounter this problems. which MIGHT be due the phone, not the headset... but i have no way to test that.
so, basicly, P3300 + motorola S9 through A2DP:
- insides works like a charm. phone in my belt, headset on. music cuality nice with some small music interrupts every now and then (maybe once per 5 minutes). phone calls nice and i can hear and they can listen me well.
but my oh my when i get on the street...
- constant music interrupts every 15 seconds. i have hang the phone around my neck so it's where my chest is to not get interrupts so often (still get one every 2-3 minutes)
- as the mic is where the ear is, if i have a call, it's impossible to hear me due the background noise. this also applies to the underground/metro. it's not that bad in a bus
and well. without A2DP enabled my music player uses so little resources the phone still works fine...
if A2DP is enabled, the phone gets REAL slow and the battery drain is MASSIVE.
when this motorola S9 break... i'll get another model to test. and when that breaks i'll probably get back to some nice wired ones (unless the CPU issues and the battery drain on the phone gets solved) ... but maybe i actually change the phone before that happens. who knows.

Music speeds up when charging?

Just noticed a very odd thing with my Desire.
I connect via bluetooth A2DP to a Sony Head unit and all works great when streaming music to it.
However I noticed the old battery was getting a bit low so plugged in the charger to give it a boost and the BPM and Pitch of the music increased!
Unplugged to double check and it slowed down a little and then speeded back up when plugged in again!
Can't get it to replicate when on headphones / speaker only when connected via Bluetooth to the car.
Can someone else try this and see if they can replicate this madness!
Ta
Steve

Sounds like a resampling issue. It may be running at a lower sample-rate to save battery and/or bandwidth when not plugged in but not actually resampling the file at all (resampling costs CPU usage).
Try comparing it to a computer by playing the same song file and see which one is slower/faster.
If it is infact the bluetooth system doing it to save power, I'd say it's most likely a bug, although one which is most likely unnoticeable for conversation use.

Awesome FEATURE

how do I stream audio to my Jabra Stone?

Having trouble trying to figure out how to stream music to my Jabra Stone bluetooth headset. Any suggestions? Also having problems with my audio dropping in an out during a phone call; looks like the headset will disconnect in the middle of a conversation and then randomly re-connect again. Rooted running Myn RLS5.
Thanks.

For the streaming: To my knowledge, unless the headset declares to your phone that it has BT A2DP profile (aka, headphones/stereo audio), it won't work for anything other than voice commands and calls (aka, Handsfree or Headset profile).
Disconnecting: Put your phone on the same side of your body as the headset. If you're outside, it'll probably cut in and out due to ambient RF interfering. Believe it or not, your body has enough water in it to block the relatively weak BT radio.

drmacinyasha said:
For the streaming: To my knowledge, unless the headset declares to your phone that it has BT A2DP profile (aka, headphones/stereo audio), it won't work for anything other than voice commands and calls (aka, Handsfree or Headset profile).
Disconnecting: Put your phone on the same side of your body as the headset. If you're outside, it'll probably cut in and out due to ambient RF interfering. Believe it or not, your body has enough water in it to block the relatively weak BT radio.
Click to expand...
Click to collapse
Jabra Stone Product features:
An entirely NEW SHAPE for headsets
Also available in white
Portable charging unit (doubles as carrying case)
Dual Mic. With Noise BlackoutTM Extreme
Touch volume control & Ergonomic Design
MultiuseTM - connect to two devices at the same time
StatusDisplayTM - check battery level and Bluetooth® status at a glance
Enjoy your tunes – stream music from A2DP enabled phones
It streamed music fine to my previous iPhone but not finding an easy way to stream music to it via the EVO. Navigation does work thru the headset if I have it connected but that's it.

lostsoul77 said:
Jabra Stone Product features:
An entirely NEW SHAPE for headsets
Also available in white
Portable charging unit (doubles as carrying case)
Dual Mic. With Noise BlackoutTM Extreme
Touch volume control & Ergonomic Design
MultiuseTM - connect to two devices at the same time
StatusDisplayTM - check battery level and Bluetooth® status at a glance
Enjoy your tunes – stream music from A2DP enabled phones
It streamed music fine to my previous iPhone but not finding an easy way to stream music to it via the EVO. Navigation does work thru the headset if I have it connected but that's it.
Click to expand...
Click to collapse
When I look under bluetooth settings/bluetooth devices it shows:
Jabra STONE
Connected to phone and media audio

surprisingly....its now working at least using powerAMP, I'll try a few more apps such as Pandora and Youtube...only thing I did is re-charge the headset.

lostsoul77 said:
surprisingly....its now working at least using powerAMP, I'll try a few more apps such as Pandora and Youtube...only thing I did is re-charge the headset.
Click to expand...
Click to collapse
Odd. Might be that the Sense music player just doesn't like it for some reason. I have had zero issues with A2DP-capable devices on CM6 or 7.

[Q] bluetooth audio issues - intermittent

Hey everyone. Gotta say, i love this phone its the android device i always wanted. However, im having issues with my car bluetooth which i have not experienced before... namely, that random phonecalls sound completely digitized.
Ive come from an htc desire and htc sensation on the same car without issue and am worried i got a bad BT antenna-or its software...
Anyone out there experiencing the same thing? Any advice (other than buying a new car)?

I am having the same issues on a Verizon Galaxy Nexus V4.02. If I turn bluetooth off mid-call the earpiece sounds fine. The static only happens during voice calls, streaming A2DP sounds fine. There are bluetooth improvements listed in the 4.03 changelog, hopefully this will be resolved.

I had some problems with my BT speaker phone. I turned off the key press sounds and the screen off sounds and that pretty much fixed it.

I have an off topic question for you guys that use bluetooth streaming. Can start the car and press play from the HU to start music? I can with my old D2, but not my TB. I have to actually start the music player on the thunderbolt, then I can control it from my HU. I would like to upgrade, but I don't see a huge advantage in upgrading if I still can't start my music without having to actually take the phone out of my pocket. (Yes, I know it's stupid, but I'm lazy.)

I have this same issue in one of my cars. I ran a number of tests and the issue only occurs on my vehicle when the phone is connected to both for telephony and a2dp music. The static occurs whether or not a2dp is actually being used to stream music or not. This particular vehicle has two separate devices for music and telephony. If I unpair or disconnect the music device, then telephony works without the audio distortion. As soon as I reconnect the music device, the static is re-introduced.
v0yeur said:
Hey everyone. Gotta say, i love this phone its the android device i always wanted. However, im having issues with my car bluetooth which i have not experienced before... namely, that random phonecalls sound completely digitized.
Ive come from an htc desire and htc sensation on the same car without issue and am worried i got a bad BT antenna-or its software...
Anyone out there experiencing the same thing? Any advice (other than buying a new car)?
Click to expand...
Click to collapse

I am experiencing this issue as well and have not been able to resolve it. I've tried disabling the touch sounds, screen off sounds, etc. but to no avail.
It pretty much makes handsfree unusable while driving. What have you guys done in the meantime? Have you been able to resolve the issue yet?
Here's my specific details:
Phone: Verizion LTE Galaxy Nexus v4.02 stock/unrooted
Handsfree Car System (phone audio): Stock 2007 Audi A4
Separate A2DP Module (media audio): Dension Gateway Five connected to factory Stereo
All of my previous phones (Thunderbolt, Droid X, Incredible, OG Droid) have fully supported this setup with no issues whatsoever.
On a sidenote, my A2DP streaming is also unreliable. It first has trouble connecting to the device. If/when it does, audio constantly cuts out when streaming Pandora, Slacker Radio, Google Music... pretty much any streaming over network connection. I have not tried locally stored music yet as I don't have any currently stored on my device. Are you guys experiencing this A2DP issue as well?
I wonder how widespread this is and if it warrants opening an official issue with Google.

I used to have a Blackberry Torch, and I have a Ford Mustang. When I would connect the BT to it, if the Wifi was on, it would "interfere" with the signal. Turning wifi off, fixed the issue. This was a widely known issue with the Torch. Granted that shouldn't have to be a fix, but can any of you verify whether your wifi is on? (regardless of if its connected to anything or not). I'm wondering if the Nexus is using the same BT/WIFI chip that the Torch used.

radi0chik said:
I used to have a Blackberry Torch, and I have a Ford Mustang. When I would connect the BT to it, if the Wifi was on, it would "interfere" with the signal. Turning wifi off, fixed the issue. This was a widely known issue with the Torch. Granted that shouldn't have to be a fix, but can any of you verify whether your wifi is on? (regardless of if its connected to anything or not). I'm wondering if the Nexus is using the same BT/WIFI chip that the Torch used.
Click to expand...
Click to collapse
I appreciate the suggestion but unfortunately, I have the issue even if WiFi is off (I never use WiFi).
I'm going to try and toggle a few of the sound and haptic feedback settings a little more to see if it's pertinent to a certain on/off configuration. It's a shot in the dark but I'll try anything at this point.

ok it was worth a shot. Maybe on a whim turn off 3g/data so basically its airplane mode except BT is on? Just to eliminate any RF interference. Other than that I dont know

Spent quite a bit of time in the car today to try and pinpoint a cause and I have had no luck.
Phone audio will sound great and then all of the sudden turn digitized and distorted for a random period of time, then revert back to sounding great. One thing to note is that the distortion is both ways - the person I'm talking to also hears it when I speak and cannot understand what I'm saying. It's very frustrating not being able to use this feature.
I am on my 2nd replacement phone and ALL of them have had this issue (returned two others to VZW due to this issue and the speaker clicking issue). I am still wondering if it is software/OS releated or if it's due to poor hardware.

Quick Update (kind of):
I messed around with more settings last night. I am happy to report that after I disabled NFC last night, I made several handsfree calls in my car with perfect clarity and no issues. Also, A2DP streaming Pandora worked flawlessly! I was happy that I thought I pinpointed the issue - NFC interference.
BUT this morning, I made a handfree call and it was immediately distorted. Frownie face! A2DP Streaming Pandora still worked great. I am now trying to determine if my success last night was a fluke or if something is different with the phone this morning. The only difference from last night to this morning, that I have been able to identify so far, is I now have the extended battery in the phone. Last night's success had the standard battery. I'll switch them back at lunch and re-test.

Stowegy said:
Quick Update (kind of):
I messed around with more settings last night. I am happy to report that after I disabled NFC last night, I made several handsfree calls in my car with perfect clarity and no issues. Also, A2DP streaming Pandora worked flawlessly! I was happy that I thought I pinpointed the issue - NFC interference.
BUT this morning, I made a handfree call and it was immediately distorted. Frownie face! A2DP Streaming Pandora still worked great. I am now trying to determine if my success last night was a fluke or if something is different with the phone this morning. The only difference from last night to this morning, that I have been able to identify so far, is I now have the extended battery in the phone. Last night's success had the standard battery. I'll switch them back at lunch and re-test.
Click to expand...
Click to collapse
I've got the same issue. Even with NFC disabled. Makes listening to Pandora in the car unbearable. I've gone through the same steps as you, but hasn't exchanged the phone yet. I've had previous Androids and it was a hit/miss with the distortion, but with an iPhone or BB never had this issue. Go figure.

thanks to all the replies, will update to 4.0.3 and try out some more options.
- unplugging my music dongle had no effect on call quality
- NFC on or off had no effect
I also find that the music adapter never auto-connects and needs me to go in to the BT settings page and manually select it.
thanks all.

Hello again. So I have an update that adds to the flakiness ...
Updated to the Bugless Beast ROM and Franco's kernel. My intent was to completely reset the phone and hopefully get a new Bluetooth stack in the process.
Initially everything paired OK, but after a while my audio randomly disconnects after about 20minutes and then reconnects depending on its mood.
My phone connection is more controllable now: if the BT is enabled on my phone when I turn on the car, the sound quality is entirely digitized and unusable. If I turn on the car and THEN enable my phone, the sound quality is flawless every time.
Still not ideal, but manageable. For the music audio part, I lay the blame entirely on the Audi Music Interface BT adapter: the thing is crap and always in pair mode even with the car turned off! The telephone BT in the car head unit has seen several phones pair with it without any issues (I do mobile development so I get to play with many phones) so in that case, I can't blame anything but the Nexus.
I really hope someone at Google or Samsung reads these threads since it would be tough to troubleshoot, but there's no doubt an issue exists with general BT compatibility.
Sent from my Galaxy Nexus using xda premium

Anyone have an update on this issue? Does anyone know of a ROM with a different Bluetooth stack than AOKP? I love everything else about AOKP. I have had the same garbled bluetooth audio from stock - 4.03 with franco and faux kernels with the same result. I had similar problems with Cyanogen 7 ROM I was using on my Incredible the week before I bought the Nexus.

Update - I experimented with a couple of additional devices, and the multiple connections problem with my Nexus is limited to A2DP only devices.
I am now using a Garmin BlueTrip with "phone audio" deselected in bluetooth options. As long as the additional bluetooth device is handsfree profile capable, the A2DP functions perfectly, calls are clear, and the device reconnects after a power cycle consistently. I'm glad this appears to be a software issue and not something we will have to live with for the life of the phone. I'm sure a future update will correct this issue.

I'm also having a problem with Bluetooth calls sounding very digitized and/or choppy. It is bad enough that it can be extremely difficult to make out what the caller is saying. A2DP, on the other hand, has performed pretty flawlessly and the device consistently reconnects each time I get in the car (although it can take up to 30 seconds or so).
I'll have to do a little experimenting with some of the settings mentioned in this thread to see if they have any affect.
On a related note, I feel like sometimes calls made/recieved on the handset can sound digitized as well (although not nearly as bad as over bluetooth). Has anyone else experienced this?
My hardware is:
Verizon GNex (4.0.2)
Parrot MKi9000