I've just recently purchased a new Samsung HS3000 bluetooth headset. Amongst others I've been wondering about the difference in sound quality when streaming music to the headset with the apt-X codec that is integrated into the HS3000 and the Galaxy S III and without.
What I don't know however is, whether the apt-X codec is incorporated into the ROM of the phone or directly into the Bluetooth-hardware.
The question everything boils down to is: Does Music over bluetooth sound better on Touchwiz-ROMs than on AOSP based ROMs?
In order to find that out I sampled 2 different music tracks and a silent mp3 on a Touchwiz and a AOSP ROM.
The ROMs used for testing were Omega v13.1 ICS (installation without bloadware) and my personal favorite so far SuperNexus Build 4
In my opinion? There is no humanly hearable difference (to me at least ), so either apt-X is present in neither of the Roms, both of them (possibly hardware-side) or it just doesn't even matter (my bet). QED :highfive:
If anyone makes any different experiences though, please post it so I can try again, maybe :silly:
If you're interested in listening for yourself, I've packaged the two Audacity Project files for you here
Preggy said:
I've just recently purchased a new Samsung HS3000 bluetooth headset. Amongst others I've been wondering about the difference in sound quality when streaming music to the headset with the apt-X codec that is integrated into the HS3000 and the Galaxy S III and without.
What I don't know however is, whether the apt-X codec is incorporated into the ROM of the phone or directly into the Bluetooth-hardware.
The question everything boils down to is: Does Music over bluetooth sound better on Touchwiz-ROMs than on AOSP based ROMs?
In order to find that out I sampled 2 different music tracks and a silent mp3 on a Touchwiz and a AOSP ROM.
The ROMs used for testing were Omega v13.1 ICS (installation without bloadware) and my personal favorite so far SuperNexus Build 4
In my opinion? There is no humanly hearable difference (to me at least ), so either apt-X is present in neither of the Roms, both of them (possibly hardware-side) or it just doesn't even matter (my bet). QED :highfive:
If anyone makes any different experiences though, please post it so I can try again, maybe :silly:
If you're interested in listening for yourself, I've packaged the two Audacity Project files for you here
Click to expand...
Click to collapse
I lack the technical know how to understand your results, though Im thankful that you did them because that question has been in my mind for awhile...to spend a bit more on the aptx enabled or not headphones. Based on your opinion that there is negligible differences, I'll just take that as gospel since I'm just a guy with average ears!
Preggy said:
I've just recently purchased a new Samsung HS3000 bluetooth headset. Amongst others I've been wondering about the difference in sound quality when streaming music to the headset with the apt-X codec that is integrated into the HS3000 and the Galaxy S III and without.
What I don't know however is, whether the apt-X codec is incorporated into the ROM of the phone or directly into the Bluetooth-hardware.
The question everything boils down to is: Does Music over bluetooth sound better on Touchwiz-ROMs than on AOSP based ROMs?
In order to find that out I sampled 2 different music tracks and a silent mp3 on a Touchwiz and a AOSP ROM.
The ROMs used for testing were Omega v13.1 ICS (installation without bloadware) and my personal favorite so far SuperNexus Build 4
In my opinion? There is no humanly hearable difference (to me at least ), so either apt-X is present in neither of the Roms, both of them (possibly hardware-side) or it just doesn't even matter (my bet). QED :highfive:
If anyone makes any different experiences though, please post it so I can try again, maybe :silly:
If you're interested in listening for yourself, I've packaged the two Audacity Project files for you here
Click to expand...
Click to collapse
Would be great if you could provided the A2DP logcat strings to see which codec is being used in both cases. You can use CatLog from GooglePlay.
Not sure if its the Samsung HS3000, or my microSD card SanDisk Mobile Ultra 32GB Micro SDHC, the sdcard is running fine, for most part. What I get is after playing my mp3's for a while, and skipping some songs etc... over the BT device is that I get quick random skipps and pauses, sometimes the phone will freeze, and I do not get any access to my microSD card.
The bad news is that even without BT and direct headphones I still get that sometimes. My next test is to go back to my regular class 4 8gb and put same exact music and listen for a day or two.
I tried stock and custom ROMs, different kernels etc. Stock seem to be the most stable, it also seems to be with some apps trigger this? or cause it to be worse? I researched online and someone suggested freezing the BT sharing app, and I did it had songs playing for an hour or more and problem still came up.
I am wondering if I need to have a specific min CPU speed when running BT? then the regular 384mhz
the microSD card has always worked in my PC, including doing full backup of my files of over 8-13gb, also I have formatted the long way this drive, nothing seems to improve this very annoying bug.
Sometimes i can get away by closing all apps and turning off BT and starting everything backup, but lately I had to do a reboot to fix it.
I keep doing windows scans on the sdcard and nothing ever shows up that it has any errors.
The internal phone memory I believe all the mp3s played fine that way, same exact ones, I just hide and unhide (. in front) the files and a reboot.
---------- Post added at 02:38 PM ---------- Previous post was at 02:32 PM ----------
my troubleshooting is difficult because I had way too many variables, I got my BT and microSD card same time, also went from 4.0.4 to 4.1.1 etc...
I saw some kernels had new BT and wifi drivers, but I used stock so I'm not sure why im having issues while others have not reported this.
My mp3s are high quality in variable bit, which I do not think is an issue, because it doesnt always happen on same exact mp3 files... worst is when I just listen to music the phone goes on longer without the glitch, as I start to use other apps, Chrome, Gmail, etc... it will be more frequent?
some had suggested the microSD card port on the phone could go flaky with the CPU's oc? I had the phone in the summer run pretty hot (in AZ)
Will report with my final test with my previous microSD card (8gb class 4) that worked flawlessly
=== update ===
So after a test, I saw the same thing happen after the 32gb card formatted, I then put 8gb card with same music. Everything seemed to work, then after some usage (chrome, email etc) same thing happened.
So its not the microSD card, it seems to be related to app (chrome or Google apps) I had suspected this as I had once flashed a room and had not installed any apps, and was able to listen to music for hours without issue.
Now if I could find out what could cause such an issue, if its simple app, or if its system/firmware related. ( was able to get the system work fine after unmounting and remounting the card)
Preggy said:
I've just recently purchased a new Samsung HS3000 bluetooth headset. Amongst others I've been wondering about the difference in sound quality when streaming music to the headset with the apt-X codec that is integrated into the HS3000 and the Galaxy S III and without.
What I don't know however is, whether the apt-X codec is incorporated into the ROM of the phone or directly into the Bluetooth-hardware.
Click to expand...
Click to collapse
On beta 4.1.2 JB ROM for SGS2 aptX codec is implemented. I also have HS3000 and on all previous sammy ROMs there was no aptX support.
Here is the prooflog https://dl.dropbox.com/u/100844994/sgs2log.txt
And what is more important - BT stereo sound quality on beta 4.1.2 JB ROM XXLSJ cannot even be compared with all previous ROMs. It's like day and night.
Why HS3000 does not transfer the ringtone?
Hi guys,
I have a question about the HS3000.
I use it now on the galaxy note II, before I used it on the galay note I.
In both cases I can call and listen to media with the HS3000. However the ringtone does not transfer to the HS3000 - I can hear only the respective beeps.
The biggest problem is that the respective talking id programs that I have do not talk in the headset, just via the phone speaker.
An interesting thing is that when a call is pending and I answer it if the name of the caller is in process of reading I can hear it in the HS3000.
What I think with my missing knowledge is that when in call the media stream does not go to the HS3000 for unknown reasons.
So my questions is how to make HS3000 usable in this regard?
Related
Sorry for the long title, and I would post this in the HD revolution forum but I'm not allowed?
Regardless:
I switched to Android Revolution HD from Cyanogen about a month ago and this one issue is driving me frigging CRAZY!! Whenever I'm streaming audio through bluetooth either to my headset or my car it cuts out. I figured out today it's directly related to how many applications are running in the background or how much the processor is having to work.
If I'm listening to audio and try to browse the web it starts cutting out on the order of 1-2 times per 10 seconds. It's not continuing to play the song during the chop either, it straight up halts audio playback for about 1/10th of a second. The weird thing is that it does NOT do this when playing audio through the headphone jack. Only when streaming over bluetooth. The chop is very negligent but it sounds like the phone cutting audio for a notification but I don't have any.
I Googled this and found several different resolutions from turning off WiFi to turning the phone's radio completely off, none of which have worked. I've reinstalled the ROM a total of 3 times, the last of which I re-downloaded the file and checked the MD5. I did not have the problem unrooted or with Cyanogen.
Can anyone help and/or move this thread to the correct forum? Again I am not allowed to post under the development forum.
Thanks.
Okay. So today I did a bit of testing. I downloaded the latest version of Revolution HD and flashed to the new ROM. I love Sense 3.0, but this is driving me nuts. I reverted back to both the version of Cyanogen that I had, as well as their newest version. Both Cyanogen version work like they are supposed to, no streaming issues whatsoever.
I decided to try out Synergy, as a friend at work recommended it. I like Synergy so far just like Revolution HD but I'll be damned if it doesn't have the same issue. Audio cuts in and out while streaming any content over bluetooth. Youtube, MP3, doesn't matter. I'm half tempted to try every single sense 3.0 rom until I find one thats stable but it sounds like an isolated issue with my phone...
Just wanted to get this thread back on the front and update with the things I tested today. If anyone can help or has any ideas I haven't tried, then by all means...
Thanks.
I know I'm not the only one experiencing this issue as I see it crop up on almost every Android forum without resolution...
What do I need to do to gain access to the thread where a dev might actually read my post..
Edit: Oh I have to have at least 10 posts. Well hopefully someone will reply to this and give me the opportunity to raise my post count so I can elevate this issue...
I've the same issue running cm7. No music streaming over bluetooth.
Sent from my Motorola Startac running Atari 2600 software!
pwraggcan said:
I've the same issue running cm7. No music streaming over bluetooth.
Sent from my Motorola Startac running Atari 2600 software!
Click to expand...
Click to collapse
While it seems like the same issue CM uses different BT drivers then sense based roms.
The problem here seems to be a ram issue more then the BT issue. As stated when the music starts skipping is when other apps are in use while listening to music. Have you tried a different music player? What player do you use?
I have tried every player on the market. It's any media that's streamed, be it a Youtube video, MP3, or what have you.
Again, the problem instantly corrects itself when I run CM7. I actually thought it might be a CPU issue. I know there is the undervolt script on Revo HD so I tried changing around the CPU frequencies as well as running a non-undervolted version of the ROM to no avail. It really feels like a driver issue.
Is there someway to grab the drivers from CM7 and use those with the Sense ROMs?
Irishwake83 said:
I have tried every player on the market. It's any media that's streamed, be it a Youtube video, MP3, or what have you.
Again, the problem instantly corrects itself when I run CM7. I actually thought it might be a CPU issue. I know there is the undervolt script on Revo HD so I tried changing around the CPU frequencies as well as running a non-undervolted version of the ROM to no avail. It really feels like a driver issue.
Is there someway to grab the drivers from CM7 and use those with the Sense ROMs?
Click to expand...
Click to collapse
No it can't be done. The drivers CM uses are sub par compared to the stock drivers in sense based roms. Not sub par as in being bad but as in swapping less signal strength for a few rarely needed options.
Sense roms are not compatable with the open source drivers.
Now when you say it corrects is self are you testing with the same player on both roms?
Well, yes and no. Youtube videos play fine in CM7 and not in HD Revo. I do however use the default player in CM7 which is different than the players that I have tried with the Sense ROMs.
Irishwake83 said:
Well, yes and no. Youtube videos play fine in CM7 and not in HD Revo. I do however use the default player in CM7 which is different than the players that I have tried with the Sense ROMs.
Click to expand...
Click to collapse
To be honest I am not sure. I have no problems with my BT connection while listening to music oor watching YouTube but then I don't run my system using heavy apps like GPS. Don't trust a phone GPS at all lol. Burning can play a game and listen to music at the same time. It could be that with sense being a ram hog that it is eating up all your resources and sense CM roms don't have have sense it uses alot less. I run senseless rom built off of the official release and don't have this issue
Bluetooth Range
I am experiencing something similar with my music cutting in and out on my bluetooth wireless headphones... however, the issue is range. They work perfectly when they are in direct line-of-sight and within 5'-0". Once I put the phone in my pocket, the music cuts out. The same goes if I am in direct line-of-sight but farther than 5'-0". I've tried this with several bluetooth wireless headphones and my experience is the same. My assumption would be it's the ROM, but it's a fresh install and I have no other apps running other than the ones the ROM came with. Anyone has any ideas?
sarichter said:
I am experiencing something similar with my music cutting in and out on my bluetooth wireless headphones... however, the issue is range. They work perfectly when they are in direct line-of-sight and within 5'-0". Once I put the phone in my pocket, the music cuts out. The same goes if I am in direct line-of-sight but farther than 5'-0". I've tried this with several bluetooth wireless headphones and my experience is the same. My assumption would be it's the ROM, but it's a fresh install and I have no other apps running other than the ones the ROM came with. Anyone has any ideas?
Click to expand...
Click to collapse
What rom?
Sorry, Android Revolution 7.0.3
sarichter said:
I am experiencing something similar with my music cutting in and out on my bluetooth wireless headphones... however, the issue is range. They work perfectly when they are in direct line-of-sight and within 5'-0". Once I put the phone in my pocket, the music cuts out. The same goes if I am in direct line-of-sight but farther than 5'-0". I've tried this with several bluetooth wireless headphones and my experience is the same. My assumption would be it's the ROM, but it's a fresh install and I have no other apps running other than the ones the ROM came with. Anyone has any ideas?
Click to expand...
Click to collapse
I have the same problem. While the phone is in line-of-sight it works well, but as soon as I put it in my pocket the music cuts.
I tried IceColdSandwich 7.2; Android Revolution HD 7.0.3 and CM7.1 with MortPlayer and PowerAmp
The headset is a Jabra HALO2.
I did narrow it down to the software in the ROM Android Revolution HD 7.03 that is affecting the bluetooth transmitter on the phone. Is there a fix in the works for this? It would be a shame to install a totally new ROM for this reason alone since the rest of the ROM is absolutely fantastic!
I think that the problem is not related with the ROM, it's in Bluetooth technology. Distance, surrounding WiFi or other radio waves and of course the strength of transmitter and receiver (as usually they are very small).
I have the same problem with my two different headsets used with my desktop, laptop and mobile. Interruptions are very rare when headsets are close to the device, other conditions like movements and something in between are causing problems.
This is why I think that the problem is not in ROM or phone model, all my devices are having the same issue sadly.
imnamak said:
I think that the problem is not related with the ROM, it's in Bluetooth technology. Distance, surrounding WiFi or other radio waves and of course the strength of transmitter and receiver (as usually they are very small).
I have the same problem with my two different headsets used with my desktop, laptop and mobile. Interruptions are very rare when headsets are close to the device, other conditions like movements and something in between are causing problems.
This is why I think that the problem is not in ROM or phone model, all my devices are having the same issue sadly.
Click to expand...
Click to collapse
I would partially agree with you on the technology... but... the stock ROM allowed me to do things with my Bluetooth headsets that I could not do with this Android Revolution ROM. Using deductive logic, it is the ROM that is the limiting factor. I used to be able to get 30 foot range with my bluetooth on my phone with the stock ROM, but now all I get is about 3 to 5 feet and it has to be direct line of sight.
Don't get me wrong, Android Revolution is a wonderful piece of coding... it is just too bad it has this fault. If I knew how to code, I would try to fix this issue myself but I have no training and it would take an awfully long time before I was able to make anything useful to be considered a 'fix'. Hopefully someone can figure this out and share it!
imnamak said:
I think that the problem is not related with the ROM, it's in Bluetooth technology. Distance, surrounding WiFi or other radio waves and of course the strength of transmitter and receiver (as usually they are very small).
I have the same problem with my two different headsets used with my desktop, laptop and mobile. Interruptions are very rare when headsets are close to the device, other conditions like movements and something in between are causing problems.
This is why I think that the problem is not in ROM or phone model, all my devices are having the same issue sadly.
Click to expand...
Click to collapse
It turns out to be the ROM. I've finally gotten around to changing ROMs and bluetooth worked just like the stock ROM that came with the phone. AR has been upgraded to 7.0.4 but I haven't been able to get it working (prior to changing ROMs). Must've been some funny glitch with the ROM software support for the bluetooth device. I now get range of up to 50 feet (tested so far) with no line of sight (through wood framed walls).
There have been a few threads about static, clicks, pops, etc... but nothing that really helped me figure out if i'm having a problem or not.
I have a stock GS3, purchased relatively early - 7/2 - from best buy.
I'm not happy with the audio playback quality, specifically when compared to other devices, like my iPod or old iPhone 4 that i had before this.
Either using the stock Samsung app, or using PowerAmp, which I've purchased... with all file formats... mostly FLAC, but also m4a, mp3...
Using any of the headphones i've tried... beyer dt1350, ety hf2, apple in-ear, etc... (not junk)...
The sound quality of music playback just doesn't seem "clear" to me... not any really blatantly loud static or distortion, although sometimes it is worse than others... occasional clicks, pops, etc. But mostly, just a lack of clarity... which could possibly be a constant mild static or distortion on the output.
Is anyone else experiencing it this way? Am i just being to sensitive to a different sound signature of this device vs apple's devices? I don't think so.
I'm 100% comfortable with the quality and integrity of my music files... i have a ton of them, and they play back fine on all of my other devices.
What else could it be, before i have to send it back to samsung and be w/o a phone for a week? best buy already won't exchange it for me, as i'm beyond my 30 day window.
help!
I know exactly what you mean, I'm very particular about my sound signature as well. I find using an equalizer to work wonders. But i have noticed that some equalizers dont work at all will the stock rom when listening to on device music with Google Play Music.
Have you tried using an equalizer or even installing Awesome Beats?
This is a development forum for custom OS and software... If you're completely stock, maybe you should take that up with Samsung or try some of the nice modded software...
So, posting here was a last resort, but I've exhausted all my other options. I'll try to make this as concise as possible:
I just did a bluetooth/aux input retrofit for my car so I can stop using CDs for music. Aux sounds crystal clear, bluetooth with my 2nd generation iPod touch sounds crystal clear, bluetooth with my Optimus G Pro has static, crackling at certain frequencies. Doesn't sound compressed necessarily, just crackly.
What I've done:
1) Hard reset.
2) Tried both the original 4.1.2 and the new "value pack" update.
3) Actually sent my phone back to AT&T and got a refurbished one in the mail.
4) Sent my bluetooth retrofit unit back and got a new one in the mail.
5) Rooted the phone, installed freegee and twrp, and flashed the hkfriends kernel.
None of this fixed my issues. When playing the same exact song on my iPod and Android phone, the iPod wins every time.
P.S. My friend's Verizon phone (I think it's a Motorola Razr) has the same sound quality issues. Not sure of Android version, though.
Music is the absolute most important thing for me, and if I can't get this resolved I will have to switch back to Windows Phone/iPhone, despite how much I love Android. I have no knowledge or time to develop a new Rom for the G Pro and there's no telling when we'll get one that could fix my issues.
Is anyone else having these problems, or does anyone have any suggestions?
Thanks!
For some reason my phone decided to play music using "Phone Audio". I disabled phone audio for the device in bluetooth setting, then it connected as an AV signal, and quality improved drastically.
khenault said:
For some reason my phone decided to play music using "Phone Audio". I disabled phone audio for the device in bluetooth setting, then it connected as an AV signal, and quality improved drastically.
Click to expand...
Click to collapse
Thanks for the suggestion. Just tried it, unfortunately did not seem to make any noticeable difference for me. To clarify, the sound quality is fine for the most part, it's just at certain frequencies I hear crackling.
By the way, earlier I also edited the audio.conf file under /system/etc/bluetooth and changed the values of "SBCSources=1" and "MPEG12Sources=0" to 0 and 1 respectively, which I read should force better quality out of bluetooth. Additionally I changed the value "Master=false" to true, which I also read could improve quality. It might be my mind playing tricks on me but it does seem to sound better, however I still hear the crackling at times, so I'm definitely not where I want to be.
Highly disappointing. Any other suggestions?
Which music player are you using on your phone? And have you tried any of the equalizer apps from the market?
Sent from my LG-E980 using xda premium
I've tried both the Music app that LG includes, and Google's Play Music app, which I prefer. No difference. Have not tried any equalizers, but not quite sure what that would do aside from eliminating the frequencies that have issues through bluetooth but work fine through an aux input? I don't consider butchering the music as an acceptable solution, unfortunately.
try this, it might help
http://forum.xda-developers.com/showthread.php?p=51930699
Does this help with volume output?
russilker said:
Thanks for the suggestion. Just tried it, unfortunately did not seem to make any noticeable difference for me. To clarify, the sound quality is fine for the most part, it's just at certain frequencies I hear crackling.
By the way, earlier I also edited the audio.conf file under /system/etc/bluetooth and changed the values of "SBCSources=1" and "MPEG12Sources=0" to 0 and 1 respectively, which I read should force better quality out of bluetooth. Additionally I changed the value "Master=false" to true, which I also read could improve quality. It might be my mind playing tricks on me but it does seem to sound better, however I still hear the crackling at times, so I'm definitely not where I want to be.
Highly disappointing. Any other suggestions?
Click to expand...
Click to collapse
Just out of curiosity - how did you find out editing the audio.conf file? I'm looking for a way to boost the output volume for my bluetooth, did a quick search and saw your post and it made me curious...
Will this change boost the output volume at all or is there a separate line or file to be edited?
Thanks for your help.
POWERAMP MUSIC PLAYER
Please forgive me for starting a completely new thread on an issue (Bug) that may or may have not already been fixed. I've searched all of XDA and Poweramp forums for solutions but have not found any. Hopefully this is not just my phone suffering from hardware failure and simply just a Poweramp glitch or bug that seems to effect the galaxy nexus. If it is just my phone, well I will ask the moderators to just delete this thread and my apologies. I will just throw my Gnex in the garbage and use my old Samsung Vibrant.
Now with that being said, is there anyone who is currently using Poweramp as their primary music player on their GNEX running 4.4 or any version of android for that matter? If so would you mind sharing what your Poweramp experience is like. In other words is their any BUZZING or SKIPPING that occurs when you are performing common tasks such as browsing the web or checking email or whatever the case may be. When I say BUZZING I really mean BUZZING, like someone being buzzed in to enter a door or like a buzzing bee except much louder to the point where it may cause some serious hearing problems. I don't mind the audio skipping or popping it is just that damn buzzing that is literally giving me a headache. Now you may say...well why don't you just try another music player? Well I have tried just about every single music player available on google play and none of them, I repeat NONE OF THEM come close to the audio quality of Poweramp (take it from me I am an audiophile). I have contacted the poweramp support team and they told me basically to F-OFF because they don't support custom roms other than Cyanogenmod. Well I tried CM11 with stock kernel and the problem still persist so no luck there.
Device Info:
Samsung Galaxy Nexus i9250 GSM
Currently running the latest build of Vanir with latest SmittyV kernel (Stock or custom kernel doesn't seem to make a difference)
Default kernel settings
Default Poweramp settings not using Direct Volume Control or an external DSP (Audio Buffer Size or Audio Thread Priority settings don't seem to help either)
Buzzing only seems to occur when using headphones, it doesn't buzz when connected via bluetooth speakers but skips (really don't mind).
Again this buzzing ONLY happens when "Multitasking". Listening to music and browsing the web seems to happen almost instantly. When the phone is in standby with music playing...no problems at all. No buzzing,skipping or popping noises.
I've tried just about every rom and kernel combination that is currently in development to try and solve this issue but have had no luck whatsoever. Other music players mainly Player Pro with the dsp pack seem to have this exact same issue. Player Pro without the DSP pack works perfectly fine but there is no gapless playback support so that's not an option. I am on the verge of just giving up all together and using my Vibrant as my "daily driver" while I save to buy a N5 someday. But I am not quite ready to call it quits that's why I ask my fellow XDA users who are currently using Poweramp Music Player for their help.
What ROM and KERNEL are you using?
Kernel settings? Default or custom Settings?
Poweramp settings?
Please help.
Anyone having any problems running aftermarket roms? I'm on Liquidsmooth and I am extremely dissapointed in the bluetooth quality. About to go back to stock or get rid of the tablet to just use my tab pro instead. IT doesn't skip or pause but it like, mutes for a second every 5 or so seconds. Its not consistent. But it happens soo much it gets me really angry. I'm on a fresh copy of LiquidSmooth. Haven't really done anything and nothing is running in the background that could be taking up all the system resources. I've even tried multiple music players even tho they all are horrible except PowerAmp which still doesn't have a tablet mode years after said feature was in the works.
You know of any fixes?
Googled Android Bluetooth Skip and seems its a very common problem among a few devices including the Note 4.... I don't have any issues with my Tab Pro, Just Tab S... This is bugging me because its main function is to play Music Via Bluetooth. Would prefer it through RCA/3.5mm but I don't have one
Had the same problem with my phone, solved it by adding the bluetooth device as a trusted device, so that when connected to bluetooth speaker the phone doesnt lock its self, done the same on my tab s and no problems streaming music using google music, as far as i can figure out its related to the kernel lowering the cpu speed when the screen locks, so you may be able to solve the prob using a kernel manager and increasing the idle speed, but personally i like the phone not locking when listening to music as i can access the player without unlocking, making it easier to put on a different album or song, hope this helps
Sent from my LG-D855
Use to have similar issues with the stock player on another device.
Solved it with Playerpro.
Install from play then in the app open settings then go to Audio.
Select to install the dsp pack then make sure it's active.
You will see a new option 'Audio buffer' change this to large. See how you go.
Seems to me also like an audio buffering issue (I think PowerAmp has a larger one by default). You could try raising the minimum CPU frequency since this us often the cause for problems kind this.
On that note, don't forget that none TW based ROMs don't have support for the APT-X codec that provides vastly better audio quality over Bluetooth as long as your audio adapter/headphones/car audio supports it as well. Nothing to do with the issue at hand though.
Its not a buffering issue. Its an audio pause issue. Its extremely common with Note 4 and some others. I solved it by going to a TouchWiz OEM style rom. The AOSP roms seem to all do it. Adjusting buffering settings changes nothing. Its as if the bluetooth drivers aren't capable of handling the "power" of whats going on. The Music still plays during the pause.
So far TW Roms seem to be the best for Bluetooth Audio. I use it daily since the Tablet is the main front end to my car, with a Sony 610BT AppRemote Deck.