Same here Android 9. It must be the Topping D10 giving it a problem then..I just install, then after connect USB dac, android ask me if run uapp. I have android 9
Sent from my SM-N950W using Tapatalk
Same here Android 9. It must be the Topping D10 giving it a problem then..I just install, then after connect USB dac, android ask me if run uapp. I have android 9
Same here Android 9. It must be the Topping D10 giving it a problem then..
Sent from my SM-N950W using Tapatalk
Hi,
If I'm honest a lot of this is over my head and I'm struggling to follow a lot of it. I've a fair knowledge of Hifi but not even the slightest knowledge of programming and especially not android programming.
Could someone give me a quick answer to these two questions:
I have an Erisin Android 9.0 HU with a PX5 chip - can I install a USB DAC of some sort to improve sound quality and how do I do this?
I noticed a few people mentioning DSPs; is this Digital Signal Processing? I know the head unit I took out of my car as part of the factory install BOSE system had a DSP system which was a noise cancelling system to reduce background noise in the car. I assume the microphone in the car and playing in the inverse signal of the background noise back through the speakers - is this possible to recreate?
Cheers, Mike!
I'm able to push audio through usb just by plugging it in. Works with everything except radio. But only problem is popping and clicks. Far as i know A9 supports DACS.Hello, I have a USB ->> SPDIF/COAX converter based on XMOS XU208. to push music through USB i need to use UAPP (no radio, youtube, bt etc.; Android9 doesn't support UAC2 or any UAC(shame!!!)).
with 'direct mode' i can get 24/96kHz sent via SPDIF.. and it works!
I had a brief test (no more than 3-4minutes) because it's still WiP but from what i remember there was no pops, clicks etc.
also volume control does not work. yet it's not a big issue.
i can make some more testing if needed
I'm able to push audio through usb just by plugging it in. Works with everything except radio. But only problem is popping and clicks. Far as i know A9 supports DACS.
You're saying you got it working without pops or clicks?
Sent from my SM-N950W using Tapatalk
I dont know if it helps at all (probably not) but as an update i have connected my dasaita px5 , with Hal9k A9 rom to the HEC module of helix dsp ultra and I have all audio EXCEPT Fm radio through the usb.
What would be awesome , is if somebody knows the way to control HELIX volume through A9 buttons. There was a guy in Russia (AntOxaNSK) which can be found on drive.ru and youtube who has made an adaptor for the volume control (he drives a mazda 3 which is very convenient because I am driving a mazda cx7 and most of the extras will work on mine too) but i had no way to contact him.
Sidebar question: in looking back through your post history - your Dasaita PX5 variant appears to have been an out-of-box Oreo unit? The reason why I ask is that I'm at a crossroad trying to decide how to build out an external audio system for the Dasaita PX5 2GB / 32GB unit that I have had for a few years now in my Corolla (6.0.1 unit - MD725 type 2 BT). To date, I've just used the in-built audio with front / rear Focal Integration components / 6x9s. I just recently purchased a 4GB / 32GB PX5 SOM from a member here that is on the way (thanks again Didier), but this SOM is also a 6.0.1 unit to preserve Bluetooth functionality for now with the referenced MD725 type 2 chip that my unit (unfortunately) has.
Here's my planned build out, as I am just simply trying to get a clean, amplified signal for the same Focal speakers with a single Focal subwoofer being added to the trunk:
-Alpine PDX-V9 or PDR-V75 5-channel amp
-Helix DSP Mini, with Wifi Control module instead of Director for control (I have a Verizon hotspot in car serving Wifi network for control instead of having to use Wifi direct) - would require moving to at least Android 7 on PX5 for the app to show up in Play Store from what I can tell
-Instead of HEC USB module, suffer through using analog outputs from Dasaita to Helix Mini analog inputs until AF releases Audiostage module allowing for direct playback from within app / external HDD - in effect bypassing any possible HU firmware funkiness inducing clicks or pops, as long as the AF app implementation is smooth
My question is - from what I can tell, the analog preamp outs on these PX5 units are across the board pretty poor in both D-A output and voltage - wondering just how much the analog input sensitivity is going to need to be cranked up on a Helix Mini in order to get a decent signal, until AF releases the Audiostage module? The manual references 2-4V input sensitivity range. I've been told by Dasaita that the analog outs should be 2V but there's quite a bit of evidence out there that these outs aren't reaching that voltage - particularly the sub output voltage (which wouldn't be a factor with the Helix Mini with 4-channel input in play, but would if connecting directly to amplifier via splitter from single jack output). Was thinking once the Audiostage module is installed, can use the analog setup for radio or other signals as needed - I don't see the need in taking a chance on instability with the HEC USB module if the Audiostage setup will eliminate any uncertainty upon release.
Just to be able to use the Wifi Control app, I'd need to move up to a custom ROM with Oreo or greater, which is going to nullify Bluetooth connectivity given MD725 type 2 on my unit - I suppose I can live with that if I can get clean sound from an external setup.
I haven't seen a whole lot of feedback on PX6 USB audio users, at least within this thread, beyond lennylen's post above from January - promising that no clicks / pops seem to be present. I had tinkered with using an Audioquest Dragonfly just to see if I could get a clean signal out of my current PX5 model with Android 6.0.1 a few times a couple of years back - horrible mess of intermittent clicks / pops even though playback actually occurred via UAPP, tweaks or no. I really, really considered jumping up to a PX6 unit but from what I had seen in researching, these units still used basically the same components outside of the SOM - including USB controller / kernel driver (Designware DWC-OTG 2.0) - is that a bad inference on my part? Or has the USB implementation improved on the newer units with Android 8/9?
Apologies for the tangent relative to your original question.
USB in my unit suffers with artifacts most probably due to this inherent problem of controlling the serial traffic often found in px5 Oreo units.
If you open another up like navigation you may here pops and clicks
Generally it will be better to either wait for the audiostage or buy a native pie unit.
I have tested the app in last year's Emma eurofinals and was everything you might need. Supports Spotify , possibly tidal , tune in radio and few more other apps. It is as clean as it should be and the only think missing will be the navigation app which still has to run through headunit.
Generally regardless what it is written here and there , these units will hardly satisfy demanding users like us in the audio section.
Their analog out is as good as an old school mobile , noisy ,low voltage , without drive , they lack full digital output to mobile sound cards etc.
Hey are only good enough if you don't have audiophile desires and need a unit for an old car that does things found in new cars.
I was if the idea that it would be included in WiFi app so surprised when the wifi app was only control and nothing more.
Anyway will wait to see , otherwise will try to fit 10" 4g tablet which are far more descent when working with either BT or USB
Anyone tested Hal9k's 9.0 ROM with OTA updates? Apparently OTA 4.0.1 offers an option to drop USB port speed to 1.1 from 2.0. In my initial testing, this change has completely smoothed out clicks / pops for my Audioquest Dragonfly. Going to continue to stress the Dasaita PX5 4GB/32GB unit I have to see if I can induce any hiccups, but after a few minutes of playback, even hot swapping the device, has been smooth - Android seamlessly switches between MCU and USB DAC when hot swapped.
https://xdaforums.com/showpost.php?p=82809393&postcount=1561
EDIT: After jumping between apps, updating apps, browsing the web and whatnot, all is not perfect - I can still get the unit to generate a few here-and-there dropouts typical of these units, but overall, not too bad at all. Especially if network traffic is minimized or not running. Pretty smooth, and pretty encouraging IMO.
I have a Maisaita Max6 PX6 HU, Hal9k Rom, USB port speed to 1.1, USB to Optical DAC is recognized and present in /proc/asound/cards file,
BUT /etc/audio_policy.conf file does not exist.
There is no audio output from DAC while playing music from any android players such as Poweramp.
I have never installed direct players such as UAPP.
Do you have such /etc/audio_policy.conf file?
Thanks
I dont know if it helps at all (probably not) but as an update i have connected my dasaita px5 , with Hal9k A9 rom to the HEC module of helix dsp ultra and I have all audio EXCEPT Fm radio through the usb.
What would be awesome , is if somebody knows the way to control HELIX volume through A9 buttons. There was a guy in Russia (AntOxaNSK) which can be found on drive.ru and youtube who has made an adaptor for the volume control (he drives a mazda 3 which is very convenient because I am driving a mazda cx7 and most of the extras will work on mine too) but i had no way to contact him.
user of a xtrons 706pl px5, rom Hal9k with helix dsp2 and direct connection with the usb audio hd module of the helix. i have also a second solution that use a diy usb dac/spdif converter.both of the solutions works great without any issues. i control the volume through the helix old controller, i have audio for music, video, internet streaming, youtube and bluetooth calls the only thing that you have pass through analog output rca is the radio fm that i never used
i have not seen the option you can select usb 1.1 or 2 but i can understand why somebody would prefer 1.1 many usb modules dac/spdif converters suffering from hes/stops because they need more power the best solution is to use an external power using an Y cable. from the android 2din usb you give the signal and using the 2 input of the Y cable using an external power supply gives the power to the dac. ( solution used with my old nexus 7 tablet as audio device in car 4 years ago)
ps: the only problem that the output is low with the hal9k. rom but with the original rom the output is more powerfull without change anything to the helix dsp or the amp gain....i have not found any solution on this problem
Inviato dal mio FRD-L09 utilizzando Tapatalk
As you can see from my recent post history, I couldn't stay on stock Android 6.0.1 for long - I just had to test out something else. Ended up with Hal9k's ROM with OTAs - the 4.0.1 USB 1.1 speed fix seems to have transformed my test DAC (AQ Dragonfly) to usable, although not 100% without here-and-there interrupts. Still though, was a pretty transformative moment to hear a clean audio stream for the first time in literally years through the Dragonfly after applying the USB speed reduction setting in Hal9k's ROM.
I am curious, since I'm considering making the leap to a Helix DSP - do you have your Dasaita PX5 set to USB 1.1 speed in Hal9k's ROM by chance? I'm trying to determine just how much you are seeing USB audio get interrupted if you've had to tweak to get a stable signal. I now have the 4GB / 32GB SOM installed in my Dasaita PX5, and I just wired up an Alpine PDR-V75 to the Dasaita analog RCA outs. I'm finding that the outputs are actually not all that noisy so far, but I can clearly tell that the preamp voltage is such that I could do far better. I'm able to completely turn the volume up to 30 and it is apparent that there is still a ton of headroom on the Alpine amp. Pretty loud and clear, but I know that if I had a stronger preamp voltage, I'd be able to achieve cleaner output at lower volume - this doesn't even account for the fact that having an external DAC would be a large step up from the Dasaita PX5 internal DAC.
I actually emailed Audiotec Fischer to see when the Audiostage HEC module would be coming out; Doug Dobson with MSC America mentioned that there is no timetable at this point for release, so I'm now reconsidering the HEC USB Audio module. Your input might help me determine if it is worth it. I think I'm pretty well convinced that I'd want to do the Wifi Control module rather than Director, but only if it is not too cumbersome to deal with controlling volume within the app. I'd also be curious if you find a way to control the volume through the steering wheel controls / Dasaita hardware buttons. I think more than anything having a handle on volume as you first turn the car on, and while you are going down the road is the main thing - adjustments to the DSP itself is not really a reactionary, on-demand type of control - almost always you are going to be parked, taking your time when adjusting audio settings of the DSP itself.
I'd also be curious if anyone has ever had any experience with this obscure DSP:
https://phoenixgold.com/products/digital-signal-processor
Doesn't appear to have much of a following, but does support USB audio (who knows how well on Android, however), as well as apparently wifi direct on some sources. 5V preamp outs, USB host for thumb drives - not sure how well that would work. Big deal breaker is not being able to have the DSP use client mode on first glance. I'd take 16bit/44khz audio via wifi if it were stable, but the DSP not being able to join an in-car wifi network is a pretty big deal. Also, there's basically no reviews on the unit anywhere (one bad Youtube video), and the app hasn't been updated in basically a couple of years. Still, I am curious about it.
As you can see from my recent post history, I couldn't stay on stock Android 6.0.1 for long - I just had to test out something else. Ended up with Hal9k's ROM with OTAs - the 4.0.1 USB 1.1 speed fix seems to have transformed my test DAC (AQ Dragonfly) to usable, although not 100% without here-and-there interrupts. Still though, was a pretty transformative moment to hear a clean audio stream for the first time in literally years through the Dragonfly after applying the USB speed reduction setting in Hal9k's ROM.
I am curious, since I'm considering making the leap to a Helix DSP - do you have your Dasaita PX5 set to USB 1.1 speed in Hal9k's ROM by chance? I'm trying to determine just how much you are seeing USB audio get interrupted if you've had to tweak to get a stable signal. I now have the 4GB / 32GB SOM installed in my Dasaita PX5, and I just wired up an Alpine PDR-V75 to the Dasaita analog RCA outs. I'm finding that the outputs are actually not all that noisy so far, but I can clearly tell that the preamp voltage is such that I could do far better. I'm able to completely turn the volume up to 30 and it is apparent that there is still a ton of headroom on the Alpine amp. Pretty loud and clear, but I know that if I had a stronger preamp voltage, I'd be able to achieve cleaner output at lower volume - this doesn't even account for the fact that having an external DAC would be a large step up from the Dasaita PX5 internal DAC.
I actually emailed Audiotec Fischer to see when the Audiostage HEC module would be coming out; Doug Dobson with MSC America mentioned that there is no timetable at this point for release, so I'm now reconsidering the HEC USB Audio module. Your input might help me determine if it is worth it. I think I'm pretty well convinced that I'd want to do the Wifi Control module rather than Director, but only if it is not too cumbersome to deal with controlling volume within the app. I'd also be curious if you find a way to control the volume through the steering wheel controls / Dasaita hardware buttons. I think more than anything having a handle on volume as you first turn the car on, and while you are going down the road is the main thing - adjustments to the DSP itself is not really a reactionary, on-demand type of control - almost always you are going to be parked, taking your time when adjusting audio settings of the DSP itself.
I'd also be curious if anyone has ever had any experience with this obscure DSP:
https://phoenixgold.com/products/digital-signal-processor
Doesn't appear to have much of a following, but does support USB audio (who knows how well on Android, however), as well as apparently wifi direct on some sources. 5V preamp outs, USB host for thumb drives - not sure how well that would work. Big deal breaker is not being able to have the DSP use client mode on first glance. I'd take 16bit/44khz audio via wifi if it were stable, but the DSP not being able to join an in-car wifi network is a pretty big deal. Also, there's basically no reviews on the unit anywhere (one bad Youtube video), and the app hasn't been updated in basically a couple of years. Still, I am curious about it.