Database Users

Bluetooth A2DP Lag?

Hello peeps,
I wonder if any of you folks with an HD2, use it with Bluetooth A2DP and satnav?
My predicament is this...
I am a motorcyclist, and occasionally listen to music from my HD2 via a Bluetooth A2DP helmet. It works great, with good sound quality and no skipping of music tracks using Manilla Music Player.
I also have Garmin Mobile XT, which I often use in the car, and the voice prompts and directions work great through the HD2 internal speaker.
However, if I want to use Garmin Mobile XT with my BT Helmet, it works OK, with the exception that audio coming from Mobile XT seems clipped right at the beginning. For example, the instruction:
"Drive 3.4 miles, then keep left." - which is how it would sound through the internal speaker...
...will more often than not sound like...
".(point) 4 miles, then keep left." - when heard through the helmet.
As you can imagine, it would be quite dangerous to have to keep looking at the screen to confirm instructions, and you can believe how confusing this is when actually on the road and relying on voice direction only.
I have searched thorugh all of the HD2 forums for the tags 'bluetooth' and 'audio', found some similar issues that peeps were having with music player playback stuttering and the like, and tried some of the remedies offered by other forum dweller (like the increase file cache, line rate, etc), but to no avail.
As a computer professional, I am inclined to say that the symptons seem like a buffering or issue. But obviously, I am not a cellualr expert, so I will leave the really diagnosis for the pro's here ;-P
Perhaps one other lucky HD2 owner will have experienced (and hopefully had solved) a similar issue (perhaps not with the BT helmet tho ;-P).
Thanks for taking the time to read my post, and I'd greatly appreciate any feedback anyone has to offer.
Rgds,
drkmtr

Me Too!
I'm using a Samsung SBH-650 Bluetooth Stereo Headset, and I get exactly the same thing! I've no idea about a solution, but at least you know you're not alone.

I have the same with Jabra BT530. No reaction from HTC, no solution here.

i saw once a thread about a similar problem.
there they wrote that the bt-chipset which is used by htc for the hd2 is a Broadcomchip. They told, that there are some differences between the os and the chip and something about the problem, that it switches to standby mode too early or something like this.
this could be the issue. your phone turns the chip too early in standby mode and you cant hear the whole sentence cause it needs time to turn it on again.
sorry mate, im not having a solution, but thats something i read. maybe it helps.
DN41

Bluetooth is a slow (imagine RS-232) comms protocol that was designed primarily for local audio connection. EDR (Ehanced data rate) was brought on for high data rate stereo connections.
If you want stereo audio connection, simutaneous phone connection and GPS connection running while all the associated SW packages are running in your phone, then you are asking a hell of a lot of even a 2.5Ghz laptop!
PLEASE, lets get the device in perspective......

Hello,
Sorry for my english.
I'm biker too, i'm using a Parrot BT Headset and i've got no problem.
I'm listen to music (with S2P) and using copilot live at the same time without problem.
Sometimes instead of S2P, i'm listening to webradio (with Wunderadio) and using copilot live without problem...
Listening radio or music allow that the BT channel is always up.
regards,
Thierry

i'm not a motorbiker, but i use bluetooth headset for listening music.
When wifi is on, and there is not wlan accessible, bluetooth lags every 30 seconds when trying to connect.

I'm reviving this ancient thread, cause I'm having a similar problem with my HTC Amaze and it's driving me nuts.
Sound is played back with about 2 seconds lag, very, very annoying. Never had any issues with my Motorola Droid...
Can anyone explain why this is happening and if there is a possible fix/hack?
Help?!

Bluetooth handsfree problems

I tried to use the Streak with both of my bluetooth handsfree devices (stock Toyota Prius solution and Becker Cascade Pro) and it doesn't work: In the Toyota the voices are choppy on both ends of the conversation and with the Becker I only get static when I call or receive a call.
Since both handsfree kits work with all my Symbian phones the error seems to have something to do with the Streak. Does anybody experience similar problems?
Sent from my Dell Streak using XDA App

Yes, with my Pioneer head unit. The a2DP streaming is incredibly good but some calls get really choppy and broken. There don't seem to be any settings you can play with like the ol' WM days either!
Frustrating as I do 120 miles a day in the week and could do with better BT call quality!

Are you guys still on 1.6 or did you update to 2.1?

Still the stock ROM as I don't think rooting works with German Streaks.
Sent from my Dell Streak using XDA App

Hi,
bite late replying, sorry
Yes firmware 1.6
Used it again today and the call started out OK and just progressively got worse. Very frustrating because as I previously mentioned the A2DP streaming is virtually CD quality.
Hope it's just a firmware thing and an update sorts it cos this thing is becoming more awesome by the day, as I add stuff to it!

Sony BT XPLOD stereo
I can make calls ok and stream music ok. I just cannot stand the stuttter that happens every couple of minutes. The audio on a call or the A2DP from slacker will inexplicably stutter at least once every several ninutes. It is so maddening when I consider how good it sounds otherwise. If I turn off bluetooth, it immediately stops.

Has anyone tried it with a 2.1 ROM yet? Cos it's a major PITA!
I basically can't phone anybody on my way home from work as they can barely hear what i'm saying for the rapid stuttering. Same on the receive side as well.
As I've previously mentioned streaming music is playing fine. No stutter on mine and superb quality.
Is there nothing I can change to fix it?

AD2P Audio

Any of you using the Desire HD with a BT Stereo Radio and/or stereo headset. The sound quality sounds really bad to me. I had the same thing on my HD2 @ default settings, but fixed that by changing the linespeed in registry. (bitpool on older WM phones)
Have been googling and can't find anything of the sort for Android. Is there a way to fix the audio quality?
My brother has the SE Xperia X10 and it has way better AD2P audio quality, even though it's still android 1.6. So it's not an Android bug, but rather a driver/setting somewhere.
Also the range the BT has is really small, I have a Logitech Pure-Fi Mobile speaker, which connects through BT AD2P, the quality is lower then on my HD2 (after tweaking) and the range is only 5-7m, while the HD2 managed to have skipless playback and higher quality at over 15-20m...
Apart from this I'm really loving the phone . And my car radio has full support for the other BT features. Like skipping tracks (in Spotify) and dialing numbers via the address book on my car radio instead of on my phone. And see who's calling on my radio's display.

danielpetrovic said:
Any of you using the Desire HD with a BT Stereo Radio and/or stereo headset. The sound quality sounds really bad to me. I had the same thing on my HD2 @ default settings, but fixed that by changing the linespeed in registry. (bitpool on older WM phones)
Have been googling and can't find anything of the sort for Android. Is there a way to fix the audio quality?
My brother has the SE Xperia X10 and it has way better AD2P audio quality, even though it's still android 1.6. So it's not an Android bug, but rather a driver/setting somewhere.
Also the range the BT has is really small, I have a Logitech Pure-Fi Mobile speaker, which connects through BT AD2P, the quality is lower then on my HD2 (after tweaking) and the range is only 5-7m, while the HD2 managed to have skipless playback and higher quality at over 15-20m...
Apart from this I'm really loving the phone . And my car radio has full support for the other BT features. Like skipping tracks (in Spotify) and dialing numbers via the address book on my car radio instead of on my phone. And see who's calling on my radio's display.
Click to expand...
Click to collapse
Hi there, I'm really interested in that too. Would you say it's just a slight problem of the sound quality or is it merely unusable?

If you use Bluetooth headset you can forgive about good music quality. that's all
if you need good quality audio in bluetooth, buy this:
http://store.sleek-audio.com/earphones/sa1-in-ear-earphones-1.html

Demiourgos said:
If you use Bluetooth headset you can forgive about good music quality. that's all
if you need good quality audio in bluetooth, buy this:
http://store.sleek-audio.com/earphones/sa1-in-ear-earphones-1.html
Click to expand...
Click to collapse
Won't really help at all, as I need to connect it to my car audio.
ramteid3 said:
Hi there, I'm really interested in that too. Would you say it's just a slight problem of the sound quality or is it merely unusable?
Click to expand...
Click to collapse
You can compare the quality with 96Kbps MP3 which is really bad imho, but still usable. It's about the same on many phones though, allmost all are set to max 31 bitpool... But with windows mobile it was an easy fix.

As the source code is out, I hope the ROM builders can soon find a way to fix this.

Hi
I use a pair of plantronics 590e headphones over A2DP and the quality is brilliant! I have not changed a thing in the setup.
I wont play anything lower than 192kbs (most of my mp3 are 320kps) as i am a real fussy git when i comes to audio.
I have used the standard music player and tunewiki and both are perfect!
Are you atchaly using the A2DP or standard mic and mono sound protcal for calls?
Sent from my Desire HD using XDA App

My MM200 Sennheiser work flawless. Music is rich and crisp!

You won't know the difference if you haven't heard the difference between bitpool 31 and bitpool 58, it's like night and day to me. Even 256kbps MP3 sounds bad to me tho.
Tried different audio files and it's not spotify causing it. As my brother is also plaything through spotify at HQ settings (which is 160Kbps OGG, comparable with 320+ Kbps MP3) ...
Eagerly waiting for an AD2P fix for android.

When I have my HD playing music through my Car's Bluetooth the quality is also pretty poor.
For some reason I can't choose any of the EQ settings? If I could just try and add some treble I think I could put up with it!

Just tried playing music via bluetooth to my sony head unit in the car and it became so choppy it was painful to even try to listen to it.
Great phone but really disappointed that there is a problem like this as one of the main uses of my phone is for audio in the car.

I use a Sony Ericsson mw600 and the quality is not good. The same headset with my sisters itouch and it sounds great. Is this a hardware or a software issue?
Sent from my Desire HD using Tapatalk

You must be careful with the mw600 that it connects in the correct mode. As headphones NOT headset for music. If you get it wrong it will sound awful. You can check by tapping the Mic during playback, if you can hear it through the headphones you have it set up wrong

Endr1 said:
My MM200 Sennheiser work flawless. Music is rich and crisp!
Click to expand...
Click to collapse
i had exact earphone, but it's just awful. first of all; htc doesn't make me choose any sound enhancements, other thing is, my 320kbps musics aren't different from 96 at all.
ps. i am an audiophile.

Imanaged to find my old iTech BlueBand headset yesterday and gave that a go. Sound quality was loud and clear and well balanced.
Shame about the delay though - it's worse than I'm used to. Video is pointless as the lag on the audio is far too much to be bearable.

A2DP sound quality issue with Galaxy S 2

Hi guys
i read xda so much, but i don't write as well
i have a big issue with my galaxy s 2
i use a bt car stereo, with a2dp and avrcp support
i used to stream all my music collection from my iphone4
now i got my sgs2 and i love it... but
the audio stream looks "limited"
it seems a bandwidth issue, or i don't know a quality issue
with iphone4 i streamed at full quality, now the sgs2 sounds a lot worst
other than that, i have to disable wifi because if on, the music is choppy and skips a lot
with wifi off, the stream goes well, but it sound bad...
sorry for my not so perfect english... i hope there is a way to improve sound quality because i "live" with a2dp on in my car...

That's strange. My a2dp stream actually sound better from sgs2 than it does from my ipod touch 2nd gen, iphone or my computer (bluez).
Receiver is a belkin stereo a2dp receiver.
Are you sure that it's not in handsfree mode? Long press the a2dp device in bluetooth settings and there should be an option to select it to be a media device, make sure it's checked.

thanks for the reply gvoima, no it's in media device mode
i think the problem is the bitpool
i've got the same problem of this guy: http://forum.xda-developers.com/showthread.php?t=708685
there is an mp3 sample of the problem in the first page

gvoima said:
That's strange. My a2dp stream actually sound better from sgs2 than it does from my ipod touch 2nd gen, iphone or my computer (bluez).
Receiver is a belkin stereo a2dp receiver.
Are you sure that it's not in handsfree mode? Long press the a2dp device in bluetooth settings and there should be an option to select it to be a media device, make sure it's checked.
Click to expand...
Click to collapse
I got a belkin stereo receiver as well, but it sounds bad and choppy, just like the topic starter described. Though still compressed (this is a known issue for A2DP due to bandwidth limitations) songs sounds much better from my Nokia E52 work phone.

rikc said:
I got a belkin stereo receiver as well, but it sounds bad and choppy, just like the topic starter described. Though still compressed (this is a known issue for A2DP due to bandwidth limitations) songs sounds much better from my Nokia E52 work phone.
Click to expand...
Click to collapse
The "but my (insert phone) worked better" isn't really valid. For as many people who make that statement there are an equal number who are shocked that the SGS2 works where other phones haven't. This is kind of like the Wi-Fi issue. When two pieces of equipment don't interact well you can't just blame one of them.
In my car and on my Yamaha YSP-4000 the SGS2's Bluetooth works better than any phone I've used. That includes the HD2, G2, and G2X. The sound is much more defined and headset controls (random and repeat) show available for the first time. The SGS2 also feeds track info to the car which none of the others did.
Bluetooth connections and sound quality are always a big YMMV.

My Sony MW600 sound great, I use to have a Motorola Defy , and it use to have an "Enhanced Stereo" option in the blue-tooth menu, the Samsung S2 does not have this option.

@BarryH,
Oh I know, I not blaming the SGS2. I only think the SGS2 out sound to it's output module which is somehow less suitable for the kind of compression, maybe set by the Belkin module. Actually I'm currious if there would be ways to change the way the SGS2 sends sound signals via A2DP

rikc said:
@BarryH,
Oh I know, I not blaming the SGS2. I only think the SGS2 out sound to it's output module which is somehow less suitable for the kind of compression, maybe set by the Belkin module. Actually I'm currious if there would be ways to change the way the SGS2 sends sound signals via A2DP
Click to expand...
Click to collapse
LG's implementation of Bluetooth drove G2X owners crazy. Check out this thread from the G2X forum...
http://forum.xda-developers.com/showthread.php?t=1117769
Maybe it will help. The only other solution for the G2X was installing an AOSP ROM.

Well, I tried it (Bluetooth Fix Repair), but off-course that tool is for a problem the SGS2 does not have.
From the tinkering I've done now I know.
- Having MusicFX installed does not make a difference
- Video players running ffmpeg codec do also not make much difference in sound quality
- The -type- of file does make a difference, i.e. low bitrate files play better
This makes me think, is there a music program which can resample/recode music before playing. I'd rather have software do that than A2DP do it badly, or is mono output (other than all the tools enabling playback on mono headsets which is for pre-A2DP headsets and thus something else) possible?

Edit /system/etc/bluetooth/audio.conf
Uncomment "Master" option and set it to "True".
Uncomment "MaxConnections" and set it to 3.
Most Android devices have this file configured poorly by default, those 2 settings should help though.
I'd suggest also enabling HFP and AutoConnect.

Great! That definitly reduced creaking/noises and even the occasional stuttering music!
Since you seem to know your stuff, would there be a way to send a mono signal to (only) the A2DP stack and would this decrease the 'tin can' effect? I'd rather have better upper tones than stereo.

knightnz said:
Edit /system/etc/bluetooth/audio.conf
Uncomment "Master" option and set it to "True".
Uncomment "MaxConnections" and set it to 3.
Most Android devices have this file configured poorly by default, those 2 settings should help though.
I'd suggest also enabling HFP and AutoConnect.
Click to expand...
Click to collapse
Thanks for the suggestions...going to try this and see if the sound quality improves in my car stereo.
Till now the best A2dp sound quality was on my Nexus S, but that was with the help of custom rom development and vodoo sound. Worst was the g2x.
Sent from my GT-I9100 using XDA Premium App

Ok guys, I think I might have... accidentily... run into a phenonemon.
I tested my phone on a Creative D100 wireless speaker it it went great, no tin can sound, no hickups.
This proved to me that there had to be something wrong. Now when I was posting here earlier I was listening a lot to music and at a certain moment I thought... wait I'm not hearing a tin-can sound anymore. However, later on while testing I heard it again so I thought I imagined it.
Powering off the phone and powering on again I was able to create this again. No tin can sound... however a lot of hickups (as if a lot of data had to be sent and it didn't quite fit). I made a call to my work phone (sound on the handset) to test and then the tin can sound was there again, no hick ups anymore though. Strangely enough a haven't been able to replicate the 'no tin can sound but hickup situation' though by powering off and on again. Tried after playing on the Belkin on the D100 again and no problems at all, great sound and no hickups whatsoever.

It appears to be a bigger issue with android connected to the bitpool setting the bluetooth receiver desires...
http://forum.xda-developers.com/showthread.php?p=14944891#post14944891

Let's hope the upcoming Cynogen can fix this issue.

I too felt that the A2DP sound quality on the Nokia BH103 is crap as compared to my Nokia 5800 (sounded even better than stock wired headset). It also uses a lot more battery, I find mediaserver using a lot of battery.
How do we escalate this to Samsung?

knightnz said:
Edit /system/etc/bluetooth/audio.conf
Uncomment "Master" option and set it to "True".
Uncomment "MaxConnections" and set it to 3.
Most Android devices have this file configured poorly by default, those 2 settings should help though.
I'd suggest also enabling HFP and AutoConnect.
Click to expand...
Click to collapse
Sorry, i'm on darky rom and i don't find this file, could someone help me out ?
Thanks

Crackling bluetooth

Hi all,
I have the Plantronics Discovery 975 bluetooth headset which has never given me problems before on previous HTC phones, but I now hear crackling whenever someone speaks...
Are there other bluetooth headset users with the same problem?

+1 voyager pro sametimes cracle sometimes no
Sent from my GT-I9100 using XDA Premium App

We bought two SGS2 and two Plantronics Discovery 975 Bluetooth headset at work. I got one of the phones and one of the headset and I'm having the exact same problem as you have. My other colleague who were happy enough to recieve the other phone does not have any cracking noise which is rather weird.
I even tried my headset connected to his SGS2, i had to make sure my head wasn't messing up the signal or something lol... and it worked fine, so it's something with the phone i guess.
In this thread they talk about KE7 having a new sets of Bluetooth profiles and what not. Perhapes Samsung recognized there was some bug and changed things around.. But i'm only guessing here.
In case anyone is wondering:
Yes, both phone and headset was fully charged when tested.
Yes, both phones and headsets were tested in the same room around the same time so it cant be interference from external sources as it didn't bother the other SGS2.
I'm using KE2 over here. I forgot to check what version my colleague is using but we got the phones the same day from the same store so I bet he is using KE2 as well.

Did both phones have WiFi enabled or disabled?

Come to think of it, I think i had it enabled on mine but not on the other phone. I'll try compare them again and this time have wifi off on both phones.

I had a 975 for about two weeks before I returned it. I wasn't getting consistent performance on either my G2 (HTC), G2X (LG), or Vaio P (Sony). I replaced it with a BlueAnt Q2 and didn't have any problems with the same devices. It works really well on the SGS2 for phone, media, and Voice Talk. The 975 also wasn't A2DP and I like to listen to music and audio on my headset sometimes.

I tried disabling the wifi, not sure if its just now or not but, it seems to be working better. I still hear the crackling noise every now and again but not like before. However i think i will keep using my SE MW600. It delivers more solid performance and the sound quality is better as well. Maybe it's because the MW600 supports A2DP.. i cant really tell.

HTC HD2 Tmobile USA I am also having serious crackling problems...to the point of contacting Plantronics to replace my Voyager Pro and pay $49 for refurbished headset. Distance to phone 2 feet and only getting 1 bar on bluetooth strength. Any sort of obstruction like moving head between headset and phone still at 2 ft away...noticeable crackling and 1 or less BT signal strength on phone. With Wifi enable crackling increases. Connecting to a linksys router just 3 ft away is quite fast but still only 3 signal strength. Turning off bluetooth causes a rise in wifi signal strength but zero bars if more than 10 ft from router. I hard reset but problems still existed.
Extensive research on the problem came across issues about bluetooth and wifi electronics on circuitboard are side-by-side and has something to do with the negative affect on each other.
Anybody have similar "crackling" audio or crackling sound and / or LOW signal when close to phone or wifi routers. I welcome any suggestions at this point.
CPU QUALCOMM 8250B
BLUETOOTH VER 2.1/2.1+EDR
OS 5.2.21913 (21913.5.0.94)
MANILA 2.5.20181424.0
ROM 9-29-10
RADIO 2.15.50.14
PROTOCOL 15.42.50.11u

Jawbone and bluetooth crackling
Hi,
I have a Jawbone Prime which I used for my iPhone 4, which was crystal clear, now I've used it a couple of times with my S GS2 and so far I'm struggling to get a clear call quality.
I thought it was the headset but I have tried it with a friends Advantax speakerphone and that happens the same, every 10 sec's it goes quite and crackles to the point that it's impossible to actual have a conversation!
My phone is only 3 weeks old is it worth exchanging it or will I get the same problem if its a software issue??
Help please
BTW I have just spoken to a lady from Samsung about this issue, to find out if it is a handset issue or software. After being passed around saying it was the headset, though I explained I have tried another 2 headsets, she now said my headset is not compatible.
When I asked her for a list of compatible headsets she put me on hold and then came back saying 'Please go to an accessory store to find out'.
I don't like being fobbed off but I believe Samsung are doing that to me and everyone else! I asked if they were fixing this issue, as there are other forums of this issue, she couldn't answer that question funny enough!
I'm now going to try another handset with my sim and the headset as I work in CPW, finger crossed!

I don't know if I am having the same issue as you guys. You are describing it as "crackling"? My connection falls into a state where the audio sounds as if the bandwidth is REALLY low. So the other person's voice is choppy - really fast choppy - I don't mean intermittent sound.
If I briefly transfer the audio to the phone and then back to the handsfree device again it clears up.
This happens in my car which has a Parrot CK6100 and also our BMW mini built-in bluetooth system.
I have a UK Orange branded SGS2 with KE2 firmware.
Could someone try doing the above and see if it clears up the audio?
As a side issue, stereo audio over a2dp works without problems so it is not a signal strength issue.

+1 Discovery 975
Better with wifi off, but still crappy sound.

I have been having a problem with my bluetooth crackling in my car for a very long time now. I did a search and found this very old thread. I wanted to bump it up to see if anyone else is having a problem like this and if there is any known troubleshooting steps we could take. As previous people have posted, stereo bluetooth works fine, its just on calls with my car that it intermittently crackles. I can toggle the connection to my phone and back to my car to clear it up, but who wants to do that? This happens nearly every call. I thought it was my car so I ignored it but I recently tried my phone in a different car and had the same issue. Ironically, I never have this issue with regular bluetooth headsets, only with cars. Anyone else have a problem like this?