[Q] Ainol Novo 9 Spark headphone hiss and noise issue - General Questions and Answers

I have this Ainol Novo 9 Spark and I installed cyanogenmod 10. But I have a big problem. While an headphone is connected to the device, I hear noise and hiss when I try to play an audio or watch a video . If no audio is played, I can occasionally hear very low amplitude noise related with cpu usage. It is like I can sense how busy the cpu is. I'm using a high quality monitoring headphone. Has anyone witnessed this issue? Can it be software related?

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[Q] Better bluetooth stereo quality

Got a pair of bluetooth headphones to use while I am riding my bike. The audio quality is very poor, is there anything I can do to improve it? Drivers, fixes etc.
braveally said:
Got a pair of bluetooth headphones to use while I am riding my bike. The audio quality is very poor, is there anything I can do to improve it? Drivers, fixes etc.
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What set did you get? I use the Plantronics Backbeat 9xx (913 i think) and the quality is fine (and I'm pretty picky with audio quality). It also adds track skip, volume, mic right at the earpieces. Perfect for workouts.
Not yet (maybe not ever?). The problem is with the bluetooth drivers that Samsung uses. Apparently they have a low bitpool value hardcoded, which means bad sound quality for the end user. I was very much frustrated with the sound quality myself (coming from ipod touch which had crystal-clear lagless bluetooth audio) but there is nothing we can do ATM.
The only fix is a part of CyanogenMod, as far as I know. I think some devs are working on (or will be working on) bringing CM to Charge, but when or if it'll happen is yet to be seen.
Take a look here for more info:
http://forum.xda-developers.com/showthread.php?t=1124466
http://forum.xda-developers.com/showthread.php?t=708685
Good to know. I had a feeling that it was a poor driver issue. I have the motorola sd90. just get muffled sound and really poor bass. I get pretty good sound out of them from my laptop so I guess it's more of the phone.
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My Earphone Jack doing stupid things

I have been using my Atrix 2 from last 4 months. There were just meager issues like network connectivity etc
Recently, I discovered that the voice output through my earphones has marginally decreased i.e. the maximum volume has decreased. I tried using other earphones also but have experienced the same thing. The speakers are doing fine. There seems to be a problem when connecting ear phones only.
Secondly, When I go to Settings/Sounds/Ringtones or any other kind of tones. I get sound from my speaker even when the earphones are plugged in . The sound output is from both speakers and earphones.
However, playing music gives me output from earphones but with less loudness(i.e. max volume)
I am pissed off because I really love listening to music. please help me. What kinda problem is this.
MY PHONE IS StILL INTO WARRANTY
Yash_Ghost said:
I have been using my Atrix 2 from last 4 months. There were just meager issues like network connectivity etc
Recently, I discovered that the voice output through my earphones has marginally decreased i.e. the maximum volume has decreased. I tried using other earphones also but have experienced the same thing. The speakers are doing fine. There seems to be a problem when connecting ear phones only.
Secondly, When I go to Settings/Sounds/Ringtones or any other kind of tones. I get sound from my speaker even when the earphones are plugged in . The sound output is from both speakers and earphones.
However, playing music gives me output from earphones but with less loudness(i.e. max volume)
I am pissed off because I really love listening to music. please help me. What kinda problem is this.
MY PHONE IS STILL INTO WARRANTY
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Could be a hardware-related issue. You might want to try to get a replacement, since you say that the phone is still under warranty...

[Q] Sound crackling with low impedance headphones

unfortunately i'm experiencing sound crackling using my sony xba3 and ue 600vi (12/13 Ω @1 kHz) on higher volumes. they work normally on other devices. using my philips SHE9553 (16 Ω) or big-can Denon AHD 1100 (32 Ω) i don't experience any crackling or distortion.
my razr currently runs under CM11 but the problem already existed under CM10.2 and stock. especially bass-heavy music isn't enjoyable because of permanent crackling (e. g. NIN - Hesitations Marks). it seems to me that it is the same problem described here for the galaxy s4: http://forum.xda-developers.com/showthread.php?t=2258831. samsung apparently fixed it by firmware update so i'm asking the following two questions:
1. do you experience that crackling as well (low-impedance headphones, higher volumes)
2. can it be fixed by firmware/kernel changes (CM-kernel)
push

Poor Bluetooth audio quality

I just got the tmobile variant s6 and immediately went to test the Bluetooth audio stream on my 2015 gs350. I noticed a crackle in the audio. It is minimal but quite noticeable at high volume. This is disappointing as my Sony Z3 had excellent BT audio quality on my gs. Anyone else notice this?
neles86 said:
I just got the tmobile variant s6 and immediately went to test the Bluetooth audio stream on my 2015 gs350. I noticed a crackle in the audio. It is minimal but quite noticeable at high volume. This is disappointing as my Sony Z3 had excellent BT audio quality on my gs. Anyone else notice this?
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I do not seem to have that issue over my car's bluetooth. T-mobile also.
I'm getting good audio quality via my Sony SBH80 aptx BT headset. Perhaps you can play on the Sound Alive equalizer.
Just wanted to let you know that I am having this same problem. When streaming music in high quality from Google Play, the treble is all crackly and distorted. It's really disappointing. I'm going to do some testing today against my old m8 and using non-streaming music. But never had this issue before.
It's probably the fact you are streaming audio. Try some high quality downloaded music, like from Spotify. I've no issues at all.
I am also having the same issue with the Verizon version of the S6. It sounds terrible over my car Bluetooth when streaming but sounds good through my bluetooth Bose headphones. I didn't have any trouble with my car Bluetooth with my iPhone 6. I really hope Samsung gets this sorted out with a software update.
I too am having issues with streaming bluetooth. I think that my issue with it is amplified, because I normally listen to music only on my Magnavox Turntable, and the sound from that console is unbeatable by any electronic streaming or mini-speaker. My son bought me a bluetooth speaker for my birthday last year, which was very nice of him, but the sound just does not compare to the 1970's technology.
Maybe I'm just old.
Do you happen to have any bluetooth le devices, like a fitbit, attached at the same time? I tried disconnecting my garmin vivosmart and there's a dramatic improvement.
evanl81 said:
Just wanted to let you know that I am having this same problem. When streaming music in high quality from Google Play, the treble is all crackly and distorted. It's really disappointing. I'm going to do some testing today against my old m8 and using non-streaming music. But never had this issue before.
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Same here. Lowering the treble help a tiny bit but what's music without treble . I've tried disconnecting my pebble watch but no dice. I really don't want to go back to aux.
In my car, before I disconnected the Garmin, I found that adjusting the toggles in Play Music - edging the first dial two toward Treble and the other dial three toward Instrument helped a bit.
I noticed the crackling on treble as well. As evanl81 suggested, I disconnected my Moto 360 (switched it to airplane mode), toggled the phone's bluetooth to have a fresh connection to the car, and the crackling is gone by at least 90%!
Very disappointing. Didn't have this problem with my Nexus 5. I'd very much prefer to not have to disconnect my watch every time I get in the car
palmboy5 said:
I noticed the crackling on treble as well. As evanl81 suggested, I disconnected my Moto 360 (switched it to airplane mode), toggled the phone's bluetooth to have a fresh connection to the car, and the crackling is gone by at least 90%!
Very disappointing. Didn't have this problem with my Nexus 5. I'd very much prefer to not have to disconnect my watch every time I get in the car
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That would be a problem. I'm starting to think that we are wirelessly connected to too many things!!
So it looks like my pebble watch was the problem. Seems i can't have other BT devices connected while connected to my car. Once I put my pebble in airplane mode, then off/on the BT radio and all is good! Sucks but at least it's a workaround.
I'm trying to use AutoInput and Tasker to automate the disconnection and reconnection of my watch when connected to the car bluetooth right now, still working out the kinks though. :\ Endless little things and inconsistent behavior.
It would be fantastic if this gets fixed by Samsung at some point!
stureiney said:
That would be a problem. I'm starting to think that we are wirelessly connected to too many things!!
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No, I have a Nexus 4 with 5.0 and now with 5.1 and its connect to LG g watch, a parrot ck3100 and auki bluetooth reciber and the quality is perfect. With S6 I only connected to my LG g watch and auki and the audio quiality is a ****.
i don't know about bad audio quality for bt but i get audio cut outs and choppiness when using my jaybird bluebuds. it gets really annoying. i noticed it happens in wide open spaces too like when i'm outside but not near any walls or enclosed areas. if i'm indoors, it works perfectly fine. i remember reading about the way bt works and the signal needs to bounce off other surfaces or something like that in order to work properly. i had this same issue way back in my OG Droid days and there was a build.prop edit to boost the signal by giving bt higher priority.
anyone else have this problem? i'm on VZW variant btw.
other than this issue, bt audio sounds perfect. i also use Viper to give the audio volume a major boost.
I'm having the same issue on my car audio.
It was perfect with the Nexus 5, very disappointed to have this with the S6.
I just got my sg6 have a samsung gear live and bluebuds x I get crackling sounding high end, very annoying, coming from an HTC one m7 with the same setup and had zero problems, really hope they are able to fix this!
OK so I enabled the tube amp setting and nothing else, it seems to have made a huge difference. I can now listen to music without cringing. Hope this helps.
Ok, I made a few findings about the issue. I also have a moto 360 connected to the S6 and the crackling is so high that is imposible to hear music with a minimum of quality.So i tried with the watch off or in airplane mode and the crackling is still there but sometimes it dissapears after connect and disconnect the bt devices but not always. Now, the elephant in the room:
I have a Samsung Hs3000 bt stereo headset and the music quality is superb even with te moto 360 connected. The magic is that this particular device has aptx codec included. So if you have an aptx bt device the quality its going to be there. For no aptx devices i'm trying an experiment: i remember from the nexus 7 2013 and other android phones that bluetooth audio quality was bad since kitkat and the problem was bluetooth compression was too high. There are two files that control this behaviour: audio.a2dp.default.so and bluetooth.default.so. If we could edit this two files maybe we could fix this. If someone can help me and tell me what program can i use to edit this files on my computer i'll try to fix it myself.
Enviado desde mi SM-G920F mediante Tapatalk
Just wanted to follow up on this thread - I recently switched to the Note 5 (which I love) and also got a Huawei Watch. When the watch is connected to the phone and the phone is connected to bluetooth, the sound quality is really horrendous. So I'm guessing it's something with the BT smart implementation in Samsung phones or something? It's really annoying. I too tried to work out some stuff with AutoInput, but it's a huge pain. The only real workarounds are to put the watch in Airplane Mode or just disconnect through the Android Wear app. And unfortunately there are no shortcuts through AutoWear. Oh well.

Bluetooth Audio Quality Issues

Hi all, I recently picked up a new HTC u11 (sprint) and having one issue that stands out. When I pair the phone to my car (2016 subaru crosstrek) and a portable speaker, I can't this static, unclear sound quality. For example, if there is a silent part in the sound, I hear "background" static noise, almost like tuning into a radiostation that doesn't get reception. The phone is fully up to date. Has anyone experienced this issue before?
Death&co said:
Hi all, I recently picked up a new HTC u11 (sprint) and having one issue that stands out. When I pair the phone to my car (2016 subaru crosstrek) and a portable speaker, I can't this static, unclear sound quality. For example, if there is a silent part in the sound, I hear "background" static noise, almost like tuning into a radiostation that doesn't get reception. The phone is fully up to date. Has anyone experienced this issue before?
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I don't get any of this with my Plantronics earpeice or bose bt speaker.

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