[REQ]A2DP Bluetooth Audio Quality - Moto X Q&A

I'd be willing to pay someone to cook a completely stock rom with the A2DP bitpool settings updated to 53.
No, I do not care if you think the Bluetooth quality is great. Yes, you might be using a device that doesn't rely on A2DP. I don't have any other option as the only time Bluetooth music streaming is useful to me is in my vehicle, which does NOT have an AUX IN.
If I use a non-android Bluetooth device, the music is AMAZING. My device crackles, it's the only thing that bothers me about this device.
Help me!
Related threads:
http://forum.xda-developers.com/showthread.php?t=2470349
http://forum.xda-developers.com/showthread.php?t=2458656
http://forum.xda-developers.com/showthread.php?t=2477481

Related

Need help on Bluetooth Audio Gateway Preference

Hi I am new here. Please guide on how to enable the Audio Gateway preference feature in my XDA IIs. The latest Broadcom Build 3500 doesn't help. I am dying to listen music through my BT headset. I know the sound quality will not be good, but I really like to listen music wirelessly. Please help. Thank you.
Please guys, really need some help here
Bump, we all want this - anyone had any joy with this yet?
RE
The music from the one-sided analog bluetooth headset is very lousy unless you get the digital headset from NextLink.
In Malaysia you can get it here:-
http://www.bluenext-tech.com/contact_us.htm
Also, lisening from your bluetooth headset will drain your headset battery very fast.
Alternatively, you can get the iPHONO bluetooth headphone or the HP bluetooth headphone instead which gives very good quality sound.
Reviews here:-
http://www.ppcsg.com/forums/viewtopic.php?t=44101&sid=fa5c74ed9743ebdd3155ab4c08fbe6c4
http://www.ppcsg.com/forums/viewtop...t=iphono&sid=fa5c74ed9743ebdd3155ab4c08fbe6c4
http://www.ppcsg.com/forums/viewtop...t=iphono&sid=fa5c74ed9743ebdd3155ab4c08fbe6c4
I know about the HP stereo BT headset and I know with a mono BT headset it will produce lousy quality music but the problem is that my XDA IIs still does not have the Audio Gateway preference (even upgraded with the latest BT patch and the unofficial BT patch). U can check it at the Bluetooth settings and choose the headset/handsfree service part then tap on advance. Only telephone voice calls preference is supported. I had seen the ipaq's h6300 series, it does have 2 preferences for its headset/handsfree settings where one is for telephone voice calls and another is the Audio Gateway preference. Even if I buy the stereo headset, it still won't play any music coz the Bluetooth does not have that service preference (unless that stereo headset package provides a upgrade to the current Broadcom stack). Hope u get what I mean here.
Damn Broadcom and O2! It is such an expensive device but does not have the feature of a lesser device like h6300 series
Just read a thread that registry tweaking can be done but the information is kinda messy. Hope u guys can help me out here. Thanks.
i have the same problem. same exact problem. grrr.. XDA IIs with a treo 650 headset. i only lack the servie for audio gateway. i want this to work so badly even with the poor quality. if anyone please help.
stereo - Blueangel - possible?
Anyone up to this yet? :roll:
I've found the thread, but, as you say is kinda lousy... If only I could understand how to make it, I would help to make a wiki... :roll:

Bluetooth headset for more than just the phone on BA???

Does anybody know how to config my Blue Angel to play mp3's through my plantronics 510???
Mike Braeuer
Which ROM are you using? Some of them have the capability, some don't... some can have it added, and some can't...
If you provide a little more info then someone will be able to help
Not possible, as far as I know.
The BA can handle it, your headset can't. You can install the A2DP bluetooth profile (needed to stream music via Bluetooth) on your device, but you would still need a (stereo) headset that supports A2DP.
Other than that, I doubt you'd get much pleasure listening to mono music through one ear on a little speaker that's built for cell phone conversations...
If you'd like to listen to music wirelessly, there's a number of bluetooth headsets that support A2DP, all of them stereo and not too expensive.

Music Thru Car BlueTooth

Is there a app that will allow music to play thru the Bluetooth in my car?
I have a stock radio that has bluetooth, I can make & receive calls in my car using the bluetooth. However I can NOT play music on my phone and hear it thru my car speakers.
Is there a app solution to this or something else to get this to work
TIA
I would love this...
also I
I'm not understanding the question. Any music player on the G1 (with 1.5) can play music over AD2P through your car headunit. I do it all the time. I can also pause/play and track-forward/back using the headunit's controls.
beartard said:
I'm not understanding the question. Any music player on the G1 (with 1.5) can play music over AD2P through your car headunit. I do it all the time. I can also pause/play and track-forward/back using the headunit's controls.
Click to expand...
Click to collapse
Not all bluetooth devices support the a2dp profile, some just act as a headset, I've seen similar requests for people wanting audio streamed to a blue tooth headset that doesn't support a2dp either.
As long as your running 1.5 and the latest radio that goes with it, you should be able to get A2DP working without any other applications. Just pair up your car stereo with your phone and it should automatically detect the profile and start piping audio through.
delta_foxtrot2 said:
Not all bluetooth devices support the a2dp profile, some just act as a headset, I've seen similar requests for people wanting audio streamed to a blue tooth headset that doesn't support a2dp either.
Click to expand...
Click to collapse
Exactly, I believe my car stereo does NOT support A2DP. I have no problems playing/hearing music thru my Motorola HT820 or my PC.
As you can see (attachment)
DAVID-G: is my PC
Bluetooth Handsfree: is my car
Motorola HT820: is my headset
Lakers3408 said:
Exactly, I believe my car stereo does NOT support A2DP. I have no problems playing/hearing music thru my Motorola HT820 or my PC.
As you can see (attachment)
DAVID-G: is my PC
Bluetooth Handsfree: is my car
Motorola HT820: is my headset
Click to expand...
Click to collapse
Long press "Bluetooth Handsfree" and select options. Under profiles you should see a Media profile and it should be checked. If you do not see this, your stereo does not support A2DP.
edit: If your stereo has a line out jack, you can get something like this to make your system A2DP capable without buying a whole new stereo.
Datruesurfer said:
Long press "Bluetooth Handsfree" and select options. Under profiles you should see a Media profile and it should be checked. If you do not see this, your stereo does not support A2DP.
edit: If your stereo has a line out jack, you can get something like this to make your system A2DP capable without buying a whole new stereo.
Click to expand...
Click to collapse
Thanks for the tip
I checked under options and it does not show a "Media" profile
My stereo does have a line out jack, but Im not sure I want to spend $100+ on a gadget.
Im hoping some bright app developer can make a app to some how trick my stereo into thinking its a call as my phone plays music
Wishful thinking? I think not, Im sure someone can make it work. I do remember when people said transfering files via Bluetooth was impossible! But now we can with Bluex.
Lakers3408 said:
Thanks for the tip
I checked under options and it does not show a "Media" profile
My stereo does have a line out jack, but Im not sure I want to spend $100+ on a gadget.
Im hoping some bright app developer can make a app to some how trick my stereo into thinking its a call as my phone plays music
Wishful thinking? I think not, Im sure someone can make it work. I do remember when people said transfering files via Bluetooth was impossible! But now we can with Bluex.
Click to expand...
Click to collapse
Not possible. The way bluetooth works is that the both devices have to have the same profile in common to communicate with each other. Your phone supports it, your car stereo does not. With OBEX, other devices supported it but the phone did not. To get this working you would either need to hack your stereo to enable the A2DP profile, get a bluetooth gateway (like what I have) or get a new stereo receiver that supports A2DP out of the box.
From experience I can say that the gateway is the best option. I got mine on sale for under $50 at buy.com and it works beautifully. My phone automatically pairs with it when my car turns on and I can make/receive calls as well as listen to music no problem.
Datruesurfer said:
To get this working you would either need to hack your stereo to enable the A2DP profile, get a bluetooth gateway (like what I have) or get a new stereo receiver that supports A2DP out of the box.
Click to expand...
Click to collapse
He already said other handsets support sending audio to BT devices that don't support A2DP, it's just a matter if the underlying Android OS supports sending audio streaming to non-A2DP devices, eg faking a phone call basically, or not. Or if it can easily be hacked in by someone.
I'm guessing this may require screwing about with the underlying OS code, an app alone may not be able to do it without OS support.
At least I understand the question better now You want an app developer to create something that allows the phone to make up for what's lacking in your headunit.
Correct me if I'm wrong, but isn't the "headset" profile mono by definition? Are you cool with giving up stereo and audio quality just to get your music over bluetooth to your headunit?
I won't say it's not possible. I've been wrong before on pronouncements like that. But app development is driven by need in the Android world (usually the developer's need first). I hope there's a big enough need that someone will help you out.
beartard said:
Correct me if I'm wrong, but isn't the "headset" profile mono by definition? Are you cool with giving up stereo and audio quality just to get your music over bluetooth to your headunit?
Click to expand...
Click to collapse
The same arguments are made about MP3 v lossless compression, and it turns out people do accept these sort of limitations after all
I don't know enough about the bluetooth standards to even know where to begin making such an app, and I don't plan to start reading up to find out
While not as cheap as a BT audio gateway option, but you can get an inline BT attachment to suit non-BT enabled car radios to support A2DP and for those of you still using phones to talk to others you can even use it as a hands free car kit which uses the car speaks...
http://www.parrot.com/catalogue/catalog/products/parrot-mki9100/
I'm glad my unit already does this. But I never use it.
Its worse than just being mono... headset profile is actually a much lower quality... phone quality.
Bluetooth A2DP Audio Gateways
I've been trying to do the same thing as OP, except my stereo does NOT have bluetooth. It does have an aux in down by the cigarette lighter. I've been googling like a fool and researching available bluetooth gateways, thanks to the poster that pointed us towards that Kensington unit. I'm not willing to spend $100 US on this functionality. I have, however, found a nice little device I plan to pick up soon.
RIM Blackberry Bluetooth Audio Gateway
Check it out here: http://www.daydeal.com/product.php?productid=20932
Hope this helps OP and any others that may have similar issues.
supremeteam256 said:
I'm glad my unit already does this. But I never use it.
Click to expand...
Click to collapse
LOL your missing out... 16gb sd card and you can for get about using other mp3 player. *couch ipod couch zune couch*
anyway there's a long tread about 3.5 bluetooth dongle Here
I know it's old, but in case anyone stumbles on this thread, try btmono (an app on Google play) It puts audio through a mono headset such as that described above. Cheers

[Q] Bluetooth Audio Streaming A2DP Poor Quality

Hi Folks!
Recently got a bluetooth FM transmitter so i can go hands free in the car and use phones music player too
However the audio is very heavily compressed when using A2DP - no bass and the top end frequencies turn to mush - ie not good enough to use
Checked all eq settings and different FM frequencies, no difference
plugged the analogue audio cable direct from the phone to the bluetooth FM transmitter and immediately got perfect sound again
I dont see many poeple talking about this on this forum or many answers but the closest seems to be windows phones can access and modify registry settings to check and increase the bitrate
My current thinking is the bitrate (or bitpool) over bluetooth A2DP is set too low, or when the phone and FM transmitter pair the phone selects a bitrate that's too low for quality audio (but ok for calls)
My question is does anyone know how modify the bitpool settings on the Galaxy S please?
I am going to get a custom ROM and will very happy when the phone is really mine so if that's what it takes I'm up for it
Many many thanks!
DJ LIBRE
Samsung Galaxy S
2.1.1 Eclair on 3 mobile network in the UK
Nexus Drive Transmit Pro (Bluetooth FM transmitter music and hands free car kit)
I have the Galaxy S on 3 UK since August. I use the bluetooth to transmit sound to my Samsung surround sound system (as I don't own a stereo). I don't notice significant quality issues doing this. Are you sure both your devices are supporting A2DP. Not all A2DP devices talking nicely with each other, so you may be failing back to the normal Bluetooth frequencies which are more focus of the vocal range. I'm looking a car stereo's right now that support A2DP so I can stream my audio from my phone straight to my stereo, my phone is becoming the centre of my entertainment!!
I'm running Doc's ROM on my phone, can't recommend moving to his Froyo ROM's and an enhanced kernel enough, my phone is working so much better with his ROM, but there are lots out there to choose from.
I am using A2DP in my car too and I find the sound quality being very good.
The thing is, the default Android audio player (Music Player) is pretty poor and often it lags for me.
Since I moved to MiuiMusic (Search here) all those lags are gone and it works perfectly and smoothly in my car.
Now, as pointed already to you, all BT devices do not communicate flawlessly between each other sometimes...
works great for me, streaming from the SGS to the car CZ 509 deck
i don't even carry CDs in my car anymore
even the lovely sub base sound comes through clearly.
nothing better like a Sonic Massage meanwhile you are driving
I wanted to create a new thread on this, but then I've seen this one. Is there no one with a solution except flashing cyanogen?
It could be a setting on your bluetooth receiver.
For example, I've got a pair of Sony DR-BT21G bt stereo headphones. When you hold a special button combination, it switches it from "high quality" to "any quality", and will just select whatever bitrate it thinks is best, usually, something that sounds about half as good.
Try looking in your manual for troubleshooting and see if there are any settings that you can change on the receiver itself?
awojtas said:
It could be a setting on your bluetooth receiver.
For example, I've got a pair of Sony DR-BT21G bt stereo headphones. When you hold a special button combination, it switches it from "high quality" to "any quality", and will just select whatever bitrate it thinks is best, usually, something that sounds about half as good.
Try looking in your manual for troubleshooting and see if there are any settings that you can change on the receiver itself?
Click to expand...
Click to collapse
Hmm, i using Sony MW600 BT headphones. I've checked the manual, but there's nothing about quality :/
But i dont think that's the problem anyway, as i tried Cyanogenmod and it got perfect quality then. But otherwise cyanogen is quite useless for me on my Galaxy S, its just too buggy. There must be someone who can change the bitpool quality on the stock gingerbread to the highest possible...
Exact same issue for me (as described by DJ LIBRE), I have a Belkin Wireless Bluetooth Music Receiver and the sound quality is horid... it's got nothing on AirPlay which I think is still kind of average quality!
I also wonder if there is a highbitrate setting that can be adjusted?
Running CyanogenMod Nightly #130 on SGS.
After getting used to listening to 24/96 FLAC's with the Voodoo Sound mod enabled with a custom built headphone amp and semi decent can's all I can say is BT Audio is a waste of time!
Has anyone noticed whether the music player was set to 5.1 surround mode? Had a similar issue where turning off the 5.1 fixed the sound streaming...

[Q] New at Android Auto - poor bluetooth quality?

Hello everyone!
So last weekend I finally received this: LINK (EBAY)
I am totally new at Android Auto, though I have had several Andrioid Phones, as well as an Android tablet. Now I have an iPhone SE - so yes, I turned to the dark side. Not important here and now.
My question is - When I had both phone and tablet with android, I remember the many many possibilities I had with rooting etc. What do I have with my Radio? Can I root it? Can it be even better?
The only negative thing I have to say, is that the sound quality via bluetooth is quite poor - especially in the higher notes. The bass however, is still awesome on bluetooth. The sound quality is only bad on bluetooth - which tells me there is something wrong with the bluetooth hardware og the bluetooth software. Very sad to find out - I listen to bluetooth music 90% of the time. That issue let me to thinking: Is there a way to fix it? Maybe a root or something?
Also - are there some must-have-apps I should know about?
Looking forward to hear from you.
Thanks.
I have noticed the same, however it is not related to Bluetooth, the BT quality is fine, the sound quality problem begins when Android Auto is activated. Try using Spotify with the standard BT connectivity. Then test the same song with the USB cable connected and using AA. The sound quality is fully degraded when using AA compared to the BT quality. I Use Viper4Android and the drop in quality is even bigger since Viper4Android doesn't catch the sound stream.
Any idea out there?
By the way, I'd rename the subject of this thread since the sound quality problem is not related to Bluetooth but with Android Auto.
Same, don't think there's a way around it.
https://productforums.google.com/forum/m/#!topic/android-auto/1OVZA4SUG-g
Second comment on that article, has to do with digital vs analog and our built in equalizer. You'd think digital would sound better
sushi143 said:
Same, don't think there's a way around it.
https://productforums.google.com/forum/m/#!topic/android-auto/1OVZA4SUG-g
Second comment on that article, has to do with digital vs analog and our built in equalizer. You'd think digital would sound better
Click to expand...
Click to collapse
BT is also a digital stream and sound is excellent, even more when paired with Viper4Android. Nonetheless V4A doesn't seem to catch the digital output stream used by AA.
Maybe it's just usb? My thumb drive doesn't sound as good as my Bluetooth with the same song either.
Yea, audio is transmitted via USB, so in theory the quality should be even better since it is transmitted without the SBC compression like with BT (unless you have aptx). If your in-car has a built in equalizer i would advice to use that one
ktwo said:
Yea, audio is transmitted via USB, so in theory the quality should be even better since it is transmitted without the SBC compression like with BT (unless you have aptx). If your in-car has a built in equalizer i would advice to use that one
Click to expand...
Click to collapse
The theory is not working in this case, most probably because we don't know the root cause of this weird and annoying issue.
Car equalizer is not working when there are missing frequencies. BT works perfectly, but when playing the same song, with the same device and app (Spotify, music player, TuneIn) the quality is severely degraded when using AA. No deep bass and no treble. Total loss of both ends of the audible spectrum while BT quality is superb (compared to the crappy AA quality)
I have tested this issue with a Chevy Malibu 2017, Chevy Impala 2017, Ford Fusion 2018, Buick regal 2017 and Hyundai Sonata 2018. Same degradation when using AA with different head units, different apps, Axon 7. I hardly believe it is a device issue, I believe it is a problem with the protocol. Are you experiencing this issue? I am using RR ROM.

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