Develop Bugs

HTC Desire - USB audio output possible

Hi Devs,
first of all, sorry for starting a new thread, but searched the forum and didn't find exactly that.
Like I've read, there is no audio over USB support built-in to our mighty Desire.
I tried a few different microUSB to 3.5mm jack adapters from ebay - even one declared as for HTC Desire. Checked the usb-pins-assignment also and it seems that HTC hasn't built in (or turned off) that function in opposite to some other manufacturers.
So will it be possible to write a rom or a kernel, that'll support that?
If it is possible, I would appreciate a few hints what I'll have to do, to get this thing working!
Thanks in advance!

Can I know why you need that? Is it for A/V out?

brianius said:
Hi Devs,
first of all, sorry for starting a new thread, but searched the forum and didn't find exactly that.
Like I've read, there is no audio over USB support built-in to our mighty Desire.
I tried a few different microUSB to 3.5mm jack adapters from ebay - even one declared as for HTC Desire. Checked the usb-pins-assignment also and it seems that HTC hasn't built in (or turned off) that function in opposite to some other manufacturers.
So will it be possible to write a rom or a kernel, that'll support that?
If it is possible, I would appreciate a few hints what I'll have to do, to get this thing working!
Thanks in advance!
Click to expand...
Click to collapse
Its not possible to send analog audio signal over the usb since its a standard usb plug. Only the old htc phones with extUSB had audio, but its was a bigger plug with more pins.
On that note i dont get why you want to get audio from there, when theres a nice 3.5mm jack socket on the top of the phone.

mr.r9 said:
Can I know why you need that? Is it for A/V out?
Click to expand...
Click to collapse
Thanks for your quick answers!
Yes, since there are no music docks for desire I built my own and it has to be possible, other phones with microUSB have that function - why not ours?
I know the old extUSB plug from my magic, there it is no problem. But there must be a way to get this working! I think it is only a software and/or driver issue.
If you'll get a music dock you'll have to plugin the phone + jack everytime? ? ? Look on ebay there are a few universal docks over microUSB, but not working for the nearly best and most sold android phone on market?
Pls give me some hints if there is a way to do that - everything is possible!
Sent from my HTC Desire

brianius said:
Pls give me some hints if there is a way to do that - everything is possible!
Sent from my HTC Desire
Click to expand...
Click to collapse
Umm, well not really. Because who says that the USB port of your phone is connected the right way internally to actually SEND data over the cable/dock.
I have no idea on how to do it. Thats just what I think, but with Android, a LOT is possible

prodygee said:
Umm, well not really. Because who says that the USB port of your phone is connected the right way internally to actually SEND data over the cable/dock.
I have no idea on how to do it. Thats just what I think, but with Android, a LOT is possible
Click to expand...
Click to collapse
YEAH IT IS!
On Nexus one they built in extra pins for docking and audio over that works like a charm.
I'm having a few adapters microUSB to 3.5mm jack for Motorola,Samsung,Nokia...phones from ebay, but not one reaction from Desire
Maybe the adapter for Desire needs a Digital-to-analog converter to get analog audio out of the microUSB port.
But no technical details over that from HTC - does anyone know more about the microUSB connections on our Desire? Tried to get a technical manual for Desire, but no chance on google...
If there is no other solution, I'll have to disassemble my expensive Desire to get a view on connections and maybe some hints which IC is managing the microUSB.
Does any dev know what would be possible by modding a kernel or rom?
Thanks in advance!

mr.r9 said:
Can I know why you need that? Is it for A/V out?
Click to expand...
Click to collapse
im also looking for something like this, though i want digital-audio out. for example in my car, plug and play so i get spotify from my usb to my stereo and able to control spotify from my stereo. there is no problem for this if you use iphone, though id like to be able to do it on my htc.
any solution?

Ability to stream out the audio through USB would be something nice to have.

There's a guide online on how to splice a USB and 3.5mm cable to the Apple USB cord so that you can charge and play audio on ipod accessories, as long as you don't mind having USB and audio plugged in at the same time. http://www.erwanmace.com/2012/07/ipod-dock-android/

Android Soundstation BT/WLAN/DOCK

Hey guys im searchin for a sounddock for my android phone.
i found this one think atm. its the one and only with dock for android phones!?
if it isn´t plsease post some other and or if you have one other with your experience on it
Here is mine i found(maybe someone has it and writes his experience?):
http://www.amazon.de/Philips-AS851-...7M0K/ref=sr_1_1?ie=UTF8&qid=1342698547&sr=8-1
with best regards
F1tty

How about this one :
http://www.samsung.com/us/video/home-theater/DA-E651/ZA
I've seen them in the stores in the UK for about £ 180.00 (Currys, Comet, etc)
Sound quality is awesome, and I'm probably gonna get one at some stage. Charges the phone via USB but audio is either via Bluetooth or All share WiFi.

I'm waiting for a dock with usb audio. I could put up with Bluetooth, but won't bother plugging in to the headphone jack. But like I said I think I will wait, I hope there will be a few options by Christmas.

firetruck41 said:
I'm waiting for a dock with usb audio. I could put up with Bluetooth, but won't bother plugging in to the headphone jack. But like I said I think I will wait, I hope there will be a few options by Christmas.
Click to expand...
Click to collapse
Yes that will be the Best solution like the Philips one ;-)...
the philips one supports sound over usb but only on devices that support this feature!
...but im still searching for another one....

Compatible USB DAC/Amp?

Hi, I've found that the headphone output of this phone, while good for some headphones, has too much noise for sensitive IEMs and not enough power for some less efficient headphones, so I'm looking into a portable DAC/Amp. I tried this one with a USB-C adapter:
https://smile.amazon.com/gp/product/B00FJSEAZ4
But it didn't work. I know the USB-C adapter works, as I've used it with a thumb drive, and I know the DAC works on other Android devices, but apparently compatibility isn't universal. So has anyone successfully tried a portable DAC with this phone?

My Fiio Q1 works fine with the phone.

uberano26 said:
My Fiio Q1 works fine with the phone.
Click to expand...
Click to collapse
Thanks, that's good to hear. I was considering one of Fiio's products

I tried this one: http://hifimediy.com/android-dac
Works very well together with an USB B to C converter that supports USB OTG and drove even my good old 600 Ohm AKG K 141 loud enough!
It has a Sabre DAC. Bought it out of concern that the sound of the phone might not be good enough. But it is - at least with low impedance headphones like my Ultimate Ears UE 10 TF I don't find a difference to the 180 $ sony walkman of my GF.
(Small remark: Used a Samsung USB B to C converter first. This one, while doing very well on the PC and with ADB and also with the charger did not work as OTG adaptor.)

noisyriver said:
I tried this one: http://hifimediy.com/android-dac
Works very well together with an USB B to C converter that supports USB OTG and drove even my good old 600 Ohm AKG K 141 loud enough!
It has a Sabre DAC. Bought it out of concern that the sound of the phone might not be good enough. But it is - at least with low impedance headphones like my Ultimate Ears UE 10 TF I don't find a difference to the 180 $ sony walkman of my GF.
(Small remark: Used a Samsung USB B to C converter first. This one, while doing very well on the PC and with ADB and also with the charger did not work as OTG adaptor.)
Click to expand...
Click to collapse
Weird, that's the exact one I tried that didn't work. Maybe I needed a different USB-C OTG adapter

thisisjason said:
Weird, that's the exact one I tried that didn't work. Maybe I needed a different USB-C OTG adapter
Click to expand...
Click to collapse
For sure. It works for me without problems - plug and play.
I use this adaptor: http://www.delock.com/produkte/G_65678/merkmale.html
Side note: While I could use the Samsung adaptor for charging (but not for OTG devices) this one works well for OTG - but not for charging.
Edit: The price for te DAC on the amazon side is way higher than if you buy directly from the Hifimediy website.
And you should also note, that this DAC while it's pretty good for higher impedance phones did not work well with my low (32 ohm) impedance IEM's. But for those I found no need to use the DAC.

I ended up with a Fiio E18, I like the fact that it has playback control, plus B&H has it on sale right now. It doesn't seem to work with Poweramp, but it works perfectly with USB Audio Player PRO.

thisisjason said:
I ended up with a Fiio E18, I like the fact that it has playback control, plus B&H has it on sale right now. It doesn't seem to work with Poweramp, but it works perfectly with USB Audio Player PRO.
Click to expand...
Click to collapse
Will USB Audio Player read OTG storage?
Most file explorers do not see mnt/media_rw/0EB0-0FF. Do any players?

Quick, and hopefully not too stupid, question, do I need to root the phone to get the DAC working with Google Play Music?

ahfpired said:
Quick, and hopefully not too stupid, question, do I need to root the phone to get the DAC working with Google Play Music?
Click to expand...
Click to collapse
Gpm will not pcm to a dac.
Need USBAPP
NO ROOT

external DAC / FiiO K1

really want to get an external DAC like the FiiO K1 but heard even with OTG Storage enabled One Plus Phones dont play well with these.
I am also looking at using the Razer Phone Dac adapter, as that sounded brilliant. and costs a bit less....

bump, looking to get one of these as well. Anyone?

mikey_sk said:
really want to get an external DAC like the FiiO K1 but heard even with OTG Storage enabled One Plus Phones dont play well with these.
I am also looking at using the Razer Phone Dac adapter, as that sounded brilliant. and costs a bit less....
Click to expand...
Click to collapse
I got the FiiO Q1 it works well with OTG and hibby music player

Pie and USB Audio

It's likely a setting that I just can't find, but is anyone successfully using the usb-c audio adapter for headphones with Pie? This wasn't an issue in the DP versions, but when I plug in the adapter, it defaults to "charging the connected device via USB" and doesn't allow me to change it.
I'd really hate for my brand new pair of Audio-Technica headphones to be rendered useless...

Is it the Google provided adapter? I read somewhere that third-party accessories were not compatible...

dd66 said:
Is it the Google provided adapter? I read somewhere that third-party accessories were not compatible...
Click to expand...
Click to collapse
Yeah, it's the one that came with the phone.

derekr44 said:
Yeah, it's the one that came with the phone.
Click to expand...
Click to collapse
my bad, sorry

dd66 said:
my bad, sorry
Click to expand...
Click to collapse
No worries. It's good to know that third-party adapters are not supported, though.

Update: Interesting thing to note is that it works fine with Flash Kernel v3.0, but not stock kernel.
@nathanchance just mentioning you here to keep you apprised (as if you don't get enough mentions...)

I just tried it and mine doesn't work either with the Google provided adapter.
Update: It does work with my headphones.

derekr44 said:
It's likely a setting that I just can't find, but is anyone successfully using the usb-c audio adapter for headphones with Pie? This wasn't an issue in the DP versions, but when I plug in the adapter, it defaults to "charging the connected device via USB" and doesn't allow me to change it.
I'd really hate for my brand new pair of Audio-Technica headphones to be rendered useless...
Click to expand...
Click to collapse
FWIW, completely stock, using the adapter from the box with Audio Technica ATH-M50x works as expected.
For whatever reason however my Sol Republic wired cans no longer work with the adapter (they did previously on the DP's)

uicnren said:
FWIW, completely stock, using the adapter from the box with Audio Technica ATH-M50x works as expected.
For whatever reason however my Sol Republic wired cans no longer work with the adapter (they did previously on the DP's)
Click to expand...
Click to collapse
That might be telling. Mine are ATH-M30X.
Glad to know it isn't just me.

derekr44 said:
That might be telling. Mine are ATH-M30X.
Glad to know it isn't just me.
Click to expand...
Click to collapse
I think my kids have that model, I will try to find them and see if they work.
EDIT: found them, they work fine as well.

I stopped using the stock adapter as it is super lose in the port. I opted to purchase Razer's adapter as it's of a higher quality. I used it this morning while cooking breakfast and it worked great.

It may have just been a goof, but I was grabbing logs and happened to see a message that said my device was not capable of usb audio. Stock Pie rooted image from yesterday.

The audio adapter is not working on my Pixel 2 XL after the official Android P OTA update.