[Q] 2-3 second bluetooth audio lag/delay - Nexus 5 Q&A, Help & Troubleshooting

Does anyone else experience bluetooth audio lag or delay? When my n5 is paired to my car (2010 Mazda 3), my music doesn't play through my speakers until about 3 seconds later. Audio for movies and videos and games are the same way, so they're out of sync. If I run the Audio Router app (forces audio to be played thru mono "headset mode" [not sure if that's what that's called]) then the lag/delay disappears and everything is fine, except that the audio is now playing at the lower headset bitrate and is mono.
So far, my car is the only thing I have to pair my phone with so I don't know if it's the car or the phone. But, I've only experienced this problem on 4.4 roms. 4.2 was fine, no audio lag at all. Every single 4.4 rom I've used has this problem (cm, aokp, pa, slim, pac, and stock).
The only patch I can think of for movies is to find a player that can allow me to offset the audio (like VLC on Windows does), but I haven't found one that supports that.
Any ideas?

cnstarz said:
Does anyone else experience bluetooth audio lag or delay? When my n5 is paired to my car (2010 Mazda 3), my music doesn't play through my speakers until about 3 seconds later. Audio for movies and videos and games are the same way, so they're out of sync. If I run the Audio Router app (forces audio to be played thru mono "headset mode" [not sure if that's what that's called]) then the lag/delay disappears and everything is fine, except that the audio is now playing at the lower headset bitrate and is mono.
So far, my car is the only thing I have to pair my phone with so I don't know if it's the car or the phone. But, I've only experienced this problem on 4.4 roms. 4.2 was fine, no audio lag at all. Every single 4.4 rom I've used has this problem (cm, aokp, pa, slim, pac, and stock).
The only patch I can think of for movies is to find a player that can allow me to offset the audio (like VLC on Windows does), but I haven't found one that supports that.
Any ideas?
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It is an issue with the link to your car. I get the same thing between all my Android devices and one particular Bluetooth device, my context is different using Chromecast to see on TV the picture but hear on bluetooth off my handset the audio, I've tried N4, N7 2012, N7 2013, N10. The only fix in my context is HDMI off the N10 (so in N5 it would be Slimport) and bluetooth off the handset.
For your car, does it have a Tape casette player old tech? They used to have an audio-male to casette adaptors, or an audio socket at all, then just male-male cable to the N5?

Related

Bluetooth lag still present with Wifi turned off

I tried pairing the Infinity with my newly purchased LG HBS-700 headset.
http://www.amazon.com/LG-Tone-Wirel...ie=UTF8&qid=1343709944&sr=8-1&keywords=lg+700
The sound quality is fantastic, but unfortunately, the audio is siginificantly out of sync with any video. I first tried Youtube which resulted in delayed audio in all the videos. I read on here that people were having issues because Bluetooth and Wifi on this device share the same antenna. I then tried watching a 1080p mkv from a Class 10 microSD card using BS Player. This resulted in the same audio delay. I then turned off Wifi and reopened the movie file. The audio delay was the same. So it appears that the Bluetooth lag we are experiencing is independent of Wifi usage. I really hope this is fixable as I bought this headset with the Infinity in mind.
I should point out that I then tested the headset with my Galaxy Nexus. I streamed the same Youtube videos with good results. There might be some lag, but it is so small that I can hardly detect it.
For those of you with Bluetooth audio headsets or speakers, use this Youtube clip to gauge your audio lag.
http://www.youtube.com/watch?v=bCPEidaVzQU
With my Galaxy Nexus, the clap sound is around the 0 mark. With the Infinity, the clap sound is at +3 or +4.
Bump for anyone who can test this.
I just paired my LG HBS-700s to my Galaxy Tab 10.1. And guess what?
NO AUDIO LAG!
With my Galaxy Tab, Youtube audio is spot on as well. No problem with Wifi and Bluetooth running simultaneously. This tells me that this must be a software issue on the Infinity that needs fixing ASAP.
I have a Jam box and I can confirm that the audio is out of sync 1~2 secs on all apps (games, YouTube, Google music, etc).
Same apps with my Gnexus no lags.

[Q] Bluetooth A2DP bad sound quality

Everyday when I drive to work I use my phone to stream music to my radio over bluetooth. Now when I tried it with my new Moto G I have problem with sound quality. The sound is somewhat distorted, metal sounding with plenty of compression artifacts. I tried to reconnect the phone, unpair and pair it again. I even tried different players and disabled all equalizer effects without any success. My previous phone Huawei G300 with ICS was plaing music flawlessly. Now when I connected phone to my PC over the bluetooth the sound was just fine. Anybody else experienced this problem? Is there any way to fix it? I searched the web and it seems that many users had smilar issue with A2DP running different versions of Jellybean.
No problems with a2dp here on 2 different receiver devices, so sorry. Running the MG with 4.3
Damn, so it has to be some compatibility issue with my car radio and this phone. Too bad Will try to resolve it somehow. Thanks.
Maybe the Moto G also have a low bitpol (bitrate) value for the SBC codec? When used with a compatible BT receiver that accepts MP3, it will sound fine whereas transcoding a loosy format to SBC at a even lower bitrate will cause audible audio artefacts.
I'm thinking of getting these small 30 pin Apple/iPod dock BT receiver which I suspect may only implement the bare minimum of A2DP : SBC codec, so if the Moto G is plagued by the low bitpol setting then I'll forget this idea lol

[Q] Prevent multi-channel audio output

I am using CROMI-X 5.4 on a TF700. It's connected via HDMI to a Denon receiver, and is used to play music, videos, etc.
Whenever I first play videos via MX Player (or music via Shuttle), the receiver says that it's receiving a stereo signal. That's good. The receiver interprets the stereo signal as Dolby PLII and it comes out all 5 speakers and subwoofer.
However, after I play a few videos or songs the receiver suddenly starts receiving a multi-channel audio signal. That's bad. The receiver doesn't mix a multi-channel audio signal, and the source audio is really only two channels, and so only two of my speakers end up being used.
I've confirmed that my media is all two channels, nothing more. Is there any way to force the TF700 to ONLY output stereo audio via HDMI? I've tried editing audio_policy.conf and commenting out the lines regarding the multi-channel capabilities of the device, but it didn't seem to have any impact.
Thanks.
I've confirmed that I get the same behaviour with Google Play Music, My Play Home (a game), and the default Video Player. So it's not an app-related problem.
It *may* be a problem with the receiver, but I believe it worked fine until I installed a more recent version of CROMI. I can only assume it's something to do with the newer CROMI build, or perhaps _that's kernel? In any case, I'd be happy to limit the device to stereo output in ALL cases if at all possible.

Non-Lagging Wireless headphones

Does such a thing exist? I would like to have wireless headphones and watch shows but normally there is always a lag that bothers me too much to even attempt it. Has bluetooth 5 or even 4.2 fixed this?
Spud37 said:
Does such a thing exist? I would like to have wireless headphones and watch shows but normally there is always a lag that bothers me too much to even attempt it. Has bluetooth 5 or even 4.2 fixed this?
Click to expand...
Click to collapse
Don't use wireless headphones but, boeffla kernel allows direct DAC output, which may allow some improvement.
Else you can pay for MX player pro and adjust audio sync with any downloaded or streamed video mx can link to.
App based streaming, such as ITV player is limited to hardware. Bluetooth will have delay, because audio has to be converted to bluetooth transport with then must be converted back to audio. Plus the transport is slow in comparison to the faster DAC.

Problems with music playback stuttering using USB audio

I was having problems with terrible audio quality on headphones using the included USB-C to 3.5mm adapter. After reading up I bought a new dongle (Apple) that includes the DAC in the dongle instead of using the analog audio out through the USB port. That did fix my audio quality issue, but introduced a new one. Now there is occasional stuttering/crackling in my music, not major, but usually noticeable at least once or twice in most songs. It happens with the built in music player app, Spotify, and a couple other music players I downloaded to test, and it seems to be more frequent when the screen is off or other apps are running, and switching apps or turning the screen off causes a stutter most of the time.
Has anyone else run into similar issues? I'm thinking this is a problem with the music player not getting priority on the CPU since it seems loosely tied with other app usage, but could this just be a faulty dongle?

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