My car head unit (a Kenwood DDX4016DAB) supports USB sound input via AOA 2.0.
Much to my frustration, I've discovered that my old LG G3 hooks up to it perfectly, and plays music, phone sounds etc. through it very nicely.
My shiny new S7 Edge however does not. Whilst it does connect to the head unit (and the relevant line in Developer Options shows that the USB mode is "USB Audio"), the sound quality is distorted and muffled. I'm at a complete loss as to why this might be - save that Samsung clearly has some not-too-clever audio software which might be interfering with the AOA output. Does anyone have any smart ideas?
I've had to fall back to bluetooth in the meantime - but the sound quality of bluetooth just isn't that great.
Many thanks in advance.
An update:
The June update package for the s7 edge seems to have partially fixed the problem. The sound now outputs without distortion, although the playback controls on the radio itself (play/pause; back/next) do not work - this includes control by steering wheel. The playback controls did work with LG G3, so this is an s7 issue.
Related
Hi All,
I need some help getting my Sabre 9018 USB DAC to work with the Joying Headunit.
I have recently purchased a Joying 7" 5.1.1 headunit. The sound quality of this unit is terrible, and after hearing the 9018 DAC connected to my phone, I simply cannot go back to the Joying sound. I'm quite good at troubleshooting/mods for Android but not an expert at all.
I've managed to get sound out of the DAC when using HibyMusic player installed on the Joying without Volume control. Spotify/Poweramp/android music player simply do not work.
My Samsung s5 using Xstrolite rom played everything flawlessly through the DAC plug and play.
I've reviewed some threads regarding DAC support but nothing really helps with the 5.1.1 units. Hence why I need help from you guys,
Thanks in advance
Daniel
the "workaround" for this is to get an external DSP, and then use the remote control of the DSP to control the volume.
Several of us here use the C-DSP 6x8 and it works well. It also includes SPDIF in, so you can go full digital all the way to the DSP. It is not a cheap solution, but if you can manage to find a good deal on a used one, it will allow you to control volume in the apps that have a dedicated USB driver. For non-critical listening, you can use your normal joying pre-outs, so you effectively get a fully functional system without having to heavily modify the HU system files.
Also there is a cheaper DSP available from minidisp called the 2x4, and you can connect an external potentiometer to control the volume. This would be the cheapest method of doing what I described above, and you still get the huge benefit of able to EQ your system with a real DSP.
Okay, thanks for the feedback. So even using neutron player, you still can't control the volume? I would try this, but Im away for work atm. Thanks again
Inside the app, yes, by attenuating the output. But you still get no sound outside of apps without a USB driver. That's why I like the dsp option. If sq is high priority it's the optimal choice regardless. Especially if you get one with digital in like the cdsp 6x8.
Do you hear FM radio and Bluetooth sound through USB ?
Hey everyone,
I recently opened a thread describing a problem between my S7 Edge and my Bluetooth audio car adapter.
I have this car adapter:
https://www.amazon.de/gp/aw/d/B00DU...oth+anycar&dpPl=1&dpID=51qDDyHDFQL&ref=plSrch
The problem:
When listening to music in my car via bluetooth the high tones start to crackle and distort even when I set the volume very low (car + phone)
The connection via AUX works fine though.
I already tried an iPhone, a Lumia and a One Plus One via bluetooth as well. Every phone sounds crystal clear except the S7 Edge.
It doesn't seem to be related to the output sound file, as the problem exists with mp3 files as well as when I'm listening to music on Spotify.
I'm considering switching my phone cause of this issue, so I'm willing to pay 50$ to someone who is able to fix my problem! (without rooting my phone)
I have an Exynos S7 running the latest DBT firmware and I'm not using any other bluetooth devices.
Push
Hi all-
I'm using this usb type C to usb connector inside my audi for playing music off of the Nexus 6p through the car's Android Auto:
https://www.amazon.com/gp/product/B010VFFSL4/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
I specifically got this one since it meets USB-C spec as many cables out there that boast high transfer rates can ruin your equipment. I'm using the latest WETA ROM and have tried a myriad of combinations by turning off/on Viper mod, configuring its settings, also tuning the eq in my car, etc.
What's weird is that music over bluetooth sounds like much better quality than wired with this USB type C connection. I got an awesome aftermarket sub and amp installed in the car but it seems to bring out the deeper issue. It's when music (mainly rock) has all instrumentals blending that the sound becomes distorted and overloaded. Because our phones already have poor max volume output, I'm having to max out the volume in the car. Also with android auto, you can't use the volume rockers on the phone it seems...seems to override the sound volume.
Anyone have any idea? In this car I can't seem to play music with aux cable (maybe an iPhone would work) and USB stick doesn't mount songs. Don't know if it's the cable I bought, the ROM (has the A.R.I.S.E. mod built in), or the DAC in the AUDI?
Thanks
Hi Guys
I have been searching and researching for hours but can't get this to work the way that I want, although I don't see any reason why it shouldn't work.
I recently purchased one of my dream cars, and promptly changed the headunit to a more modern unit, to allow me to have spotify, google maps, etc etc. I purchased the Eonon GA8150A for this purpose, and it sounds OK.
I was always planning to upgrade the sound, namely using a Helix DSP and amplifier, upgrading the speakers, etc etc.
Since the helix has an optical input, I figured I could maximise quality by running a digital signal to the unit - to this end I purchased a Behringer UCA202, as its a class compliant USB DAC which has optical out.
I connected via USB, and went into developer settings, and changed the "Select USB Configuration" to Audio. I plugged in some headphones for testing, and....nothing.
After some research, I downloaded the Onkyo player, and this worked! I was getting audio via my USB dac, through the headphones. But spotify, bluetooth, radio, nothing else worked.
Was wondering if what I am trying to achieve is possible?
The only other alternative it to sell the uni, and purchase an AVIN Avant 3 unit - this comes with high quality 4V pre outs but its a lot more expensive and i really dont want to do this. I could use the RCA outs on the Eonon to feed the processor, but as mentioned, these leads to many stages of A/D D/A conversion that will markedly reduce quality.
Thanks
Saad
Ok updates - it now works - the inbuilt audio player via USB, spotify, both work, however the radio doesn't send audio via the DAC, and nor does it send audio to the dac from my phone via bluetooth.
Not sure why this works now, maybe I had to turn off the car a while so the unit could properly reset?
The head unit volume control however doesn't work to adjust the volume of the audio coming from the dac.
Any way to get radio and bluetooth working via the dac?
Cheers
Hi folks, wondering if anyone has dealt with this issue before.
I have a Kenwood KDC-X701 headunit in my Jeep which supports APT-X. I have never had an issue with any of my android phones connecting to the headunit, specifically my Galaxy S5 running LOS 14 nightlies. Always auto-connects and displays APT-X on the headunit (NOT AAC)
I broke the screen on the S5 so I bought an LG V20 (LS997) knowing full well that development has ceased on the V20, with the assumption that a stock ROM will at least be fairly stable.
Enter the issues I am having with my new V20, latest Sprint build 100% stock.
When I let the headunit auto-connect to the V20, it displays APT-X but no audio comes through the head unit unless I initiate a call (no music regardless of application, no google maps audio, etc). After disconnecting the call, it goes back to not passing audio.
If I disable auto-connect on the headunit and manually connect my V20, it connects and displays "AAC" and will play audio without issues.
Now, normally I would say "screw it, I found a workaround", but I tested my S5 and V20 side-by-side with some Modest Mouse FLAC files (through PowerAmp), and APT-X makes a noticeable difference in clarity. The mids/highs sound muddy on the V20 (AAC), and super clear on the S5 (APT-X). Enough so that I spent quite some time debugging it to see if I could figure out what the source of the issue was.
Is this something related to the APT-X HD codec? I spent an hour just now messing with it and I can NOT get the V20 to pass audio when connected via APT-X, but it passes audio just fine via AAC. 100% sure this is the V20 because every other Android I have tried (even my friend's S7, stock VZW), and none of them have this issue!
TL;DR
My V20 won't pass audio using the APT-X codec, but will pass audio using the AAC codec. My head-unit always auto-negotiates APT-X and I have to manually disconnect/reconnect through my V20 to get it to negotiate AAC and pass audio.
Any help/feedback would be greatly appreciated
EDIT:
Here are some pics I took of the actual display
AAC https://photos.app.goo.gl/6urGBAmHOSGTy1Cn1
APT-X https://photos.app.goo.gl/VwgCoSkySW57iVSr1
Driving me mad because I like to just get in the car, hit play on the headunit, and not need to take my phone out of my pocket
Same problem here
This could have just as easily been my post word for word. I got a V20 over the weekend, replaced my old stereo with a x501 so that I could have bluetooth. Took me about a day to figure out that I have to disconnect and reconnect in order to get sound, even thou it is clearly connected via bluetooth and I can see what song is playing on the stereo. I too noticed that this is happening when its using APTX codec, when I disconnect and reconnect it for some reason switches to AAC and works perfectly. Yep, and it's very annoying because I do have to get into you phone and disconnect/reconnect every time I start my car. After that everything works as expected.
investinwaffles said:
My V20 won't pass audio using the APT-X codec, but will pass audio using the AAC codec. My head-unit always auto-negotiates APT-X and I have to manually disconnect/reconnect through my V20 to get it to negotiate AAC and pass audio.
Any help/feedback would be greatly appreciated
Click to expand...
Click to collapse
Have you checked online for a firmware update for the radio? I have the kdc-x599 and mine had an update specifically for Bluetooth related issues and mine streams just fine over the aptx codec.
Thanks for the advice! I was actually on a much older firmware version so I went ahead and updated my head unit (from v.109 to v.116) but unfortunately there was no change
I am going to try a full factory reset on the head-unit this weekend but it's not looking promising unfortunately
It is pretty annoying to have to initiate the connection from the phone, especially when you hop in/out of your car like at a gas station and end up not remembering till you are on the road. I was looking for a widget or something that could auto-initiate a specific bluetooth connection instead of having to go into the settings (or toggle bluetooth on/off) but haven't found one.
I really like the concept of the phone and the hardware, but LG is just "not good" at Android. My best advice is for them to run just pure AOSP and fire their OS development team, but hopefully Google will force their hand with Project Treble.
Compounding things further I dug out my S5 with Lineage OS to set it up as a garage phone and remembered how much I miss just pure AOSP (and root access, and no bloatware, and stability)...
I wonder if the KDC-X702 and latest models have the same issue, but confirmed that it was an issue specific to the V20 and it seems futile to change the whole head unit because of the shoddy bluetooth stack in the V20.
So, I will grudgingly deal with the issue and try to push it from my mind every single time I get into my car until I can find a suitable replacement for the V20, but the damn headphone amp has spoiled me which makes it hard. Maybe someone will come out with a nice streamlined Type-C DAC/AMP combo but I am not holding my breath
EDIT:
Last ditch effort - I am going to send an email to both Kenwood and LG tech support to try and get some engineering assistance.
I know LG is going to write me off, but Kenwood seems actively engaged in development (last firmware update for the KDC-X701 was March 15th, just days ago). It's not on their end of the equations so I am not sure what they can do anyways
@investinwaffles
Is your phone rooted? That sounds kinda similar to the issue of using certain audio mods or tweaks on the V20. I use Viper and to activate the mod over Bluetooth I have to use an app created by WETA that basically forces a phone call so it can activate the effects. My TMobile version doesn't have any problem playing over aptx on mine regardless of audio mod though but it sounds kinda similar.
KUSOsan said:
@investinwaffles
Is your phone rooted? That sounds kinda similar to the issue of using certain audio mods or tweaks on the V20. I use Viper and to activate the mod over Bluetooth I have to use an app created by WETA that basically forces a phone call so it can activate the effects. My TMobile version doesn't have any problem playing over aptx on mine regardless of audio mod though but it sounds kinda similar.
Click to expand...
Click to collapse
No, I am 100% stock, Sprint ZVD firmware (latest update)
Mine is stock and I did update the firmware on the headunit(x501) to 116, this is what Kenwood told me which I tried with no luck...
I recommend that you initialize the Bluetooth settings, reset the unit, and verify the firmware is up to date. Simply press the volume knob to enter FUNCTION, turn the knob and select BT MODE, INITIALIZE, and YES. You may then remove the faceplate and press the small button on the radio with a paper clip or ball point pen.
Click to expand...
Click to collapse
Once i told them this did not work they asked me this...
I recommend that you pair and connect a different device to confirm if you are experiencing a compatibility issue or if the unit needs to be serviced. For testing purposes try a phone manufactured by a different brand or one listed on the Bluetooth compatibility list.
Click to expand...
Click to collapse
None of the phones on their list support aptx, they are all very old phones. What I don't understand is why does it try to use aptx only when the headunit boots, then it will switch to AAC when I disconnect and reconnect bluetooth from the phone. If the phone is setup to use aptx, wouldn't try to negotiate aptx everytime it connects? Anyway, AAC works but its a hassle every time I jump in and out of the car. Is this just an issue with the LG V20 or Kenwood? I dont' have any other bluetooth devices that use aptx to test with... and since other phone I have only use aac I can verify the headunit either.
On a side note, I also have issues with hand mode. when I connect the phone via usb it will only provide power. I have spent no time troubleshooting this so it could be as simple as a cable issues. I was curious if you have connected the LG V20 via usb and been able to use hand mode?
@G2T
Do you have a Sprint variant as well?
I have a T-Mobile variant and a Kenwood unit and I have no issues with using aptx. Mine doesn't display the codec on the unit but I have used logcat to verify that it doesn't switch back to aac as I've had Bluetooth issues before on a certain TMobile firmware
I have AT&T