Database Develop

[Q] HP Touchpad CM7/9 USB Audio Support

So I've been trying I find a solution for this, but it's been proving difficult. I have seen that on the nook forums, with a quick kernel mod and a tweak that allows USB audio control (i.e turn on switch for USB audio output), the guys over there have working digital USB audio output to an outboard DAC. Could anyone find out how to do this with cm7/cm9? Cm9 preferably. I assume we have basic USB host capability, since keyboards, etc. work, so its something specific to USB audio. This is definitely one of the only issues I need resolved on my TP.
Kojaku

ssabino said:
So I've been trying I find a solution for this, but it's been proving difficult. I have seen that on the nook forums, with a quick kernel mod and a tweak that allows USB audio control (i.e turn on switch for USB audio output), the guys over there have working digital USB audio output to an outboard DAC. Could anyone find out how to do this with cm7/cm9? Cm9 preferably. I assume we have basic USB host capability, since keyboards, etc. work, so its something specific to USB audio. This is definitely one of the only issues I need resolved on my TP.
Kojaku
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This is very possible with USB host and OTG Y-cable adapters. When my cables and my computer come in the mail I will try tinkering with it. It'd be nice to see Jack audio running on here. Once July rolls around and HP releases most of their driver and kernel sources, development in all areas will skyrocket for our Touchpads.
Sent from my Galaxy Nexus using Tapatalk 2

Does the upstream port require power even if the device I'm using has its own power? My E17 has its own battery, but for some reason it isn't even recognized through the USB OTG cable. I can't even get USB audio to work on the WebOS side, which supposedly has full USB audio support via pulse audio now...
Sean

ssabino said:
Does the upstream port require power even if the device I'm using has its own power? My E17 has its own battery, but for some reason it isn't even recognized through the USB OTG cable. I can't even get USB audio to work on the WebOS side, which supposedly has full USB audio support via pulse audio now...
Sean
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Hmm, I'm not sure. If it has it's own power supply, maybe you can try to mount it with a standard male microUSB to female USB. I'm about to see if I can get my external HDD with it's own power supply to mount to my phone and tablet. Will report back with results.
---------- Post added at 12:57 PM ---------- Previous post was at 12:46 PM ----------
Yeah, no go on mount :/

ssabino said:
So I've been trying I find a solution for this, but it's been proving difficult. I have seen that on the nook forums, with a quick kernel mod and a tweak that allows USB audio control (i.e turn on switch for USB audio output), the guys over there have working digital USB audio output to an outboard DAC. Could anyone find out how to do this with cm7/cm9? Cm9 preferably. I assume we have basic USB host capability, since keyboards, etc. work, so its something specific to USB audio. This is definitely one of the only issues I need resolved on my TP.
Kojaku
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Click to collapse
Has there been anymore dev on this topic, including the current CM mods? This would make an interesting project for a carputer if the USB audio works.

[Q] Micro usb stereo audio output?

Hey everyone,
Having a bad GPS -signal as soon as I plug in my headphones (which renders GPS tracking basically useless for me), I am looking for alternative ways of using my headphones while doing sports. Searching the Internet, I came across various microUSB to headphone adapters (e.g. serach on amazon for: "LinkS Micro USB to VGA MHL Adapter+Micro 5pin to 11pin adapter + Charging Cable in Black 3 Feet Kit" or "Universal Micro USB Interface to 3.5mm Plug Earphone Adapter (Black)", I have not enough posts to post links/images, yet). Now I am wondering if our phone will support these adapters and if yes, can I control the volume of the output?
Many thanks in advance!

Using an USB audio device requires USB OTG which our device doesn't support.

Hey @Adam77Root but we have working mhl which anyway is using microusb port. And iodaks kernel have working otg too.
Edit: android L seems will have support for USB audio devices IF they have working otg

gerciolisz said:
Hey @Adam77Root but we have working mhl which anyway is using microusb port. And iodaks kernel have working otg too.
Edit: android L seems will have support for USB audio devices IF they have working otg
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Click to collapse
MHL uses a different method.
If there is working OTG, USB audio support is enabled in the kernel and USB audio HAL is included in the rom, it can work. Older versions too support it.

USB-C -> USB-C + headphone jack dongle?

Hi, I was wondering if there is a dongle that would split the USB Type C connector on the 5X to another USB Type C plus a headphone jack. I would like to make something like a dock for my car where I would plug in just a single USB cable and would have both charge (through the usb) and audio (through the jack into the head unit in my car). Would it even be possible to configure the phone to output audio via the USB? Cheers.

DanielM998 said:
Hi, I was wondering if there is a dongle that would split the USB Type C connector on the 5X to another USB Type C plus a headphone jack. I would like to make something like a dock for my car where I would plug in just a single USB cable and would have both charge (through the usb) and audio (through the jack into the head unit in my car). Would it even be possible to configure the phone to output audio via the USB? Cheers.
Click to expand...
Click to collapse
You may want to read the first post of this thread: [Guide] How to enable USB audio on Nexus 5X
The short answer is, yes, the 5X (and a lot of other devices too, it depends on the kernel and a properly configured ALSA, and should be possible since Android 4.1) can output Audio through the USB connector, through you may be limited to charging slowly at the same time you are outputting audio; and depending on the device, it may not charge at all.
Some more info here: USB Digital Audio | Android Open Source Project

Paul L. said:
You may want to read the first post of this thread: [Guide] How to enable USB audio on Nexus 5X
The short answer is, yes, the 5X (and a lot of other devices too, it depends on the kernel and a properly configured ALSA, and should be possible since Android 4.1) can output Audio through the USB connector, through you may be limited to charging slowly at the same time you are outputting audio; and depending on the device, it may not charge at all.
Some more info here: USB Digital Audio | Android Open Source Project
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I already found that thread and given that this is the 'Accessories' forum, my question was aimed more towards the dongle/adaptor, but thank you

Sabre DAC USB Not Detected

Hi all,
Is anyone here using the Sabre DAC on the HTC Memul?
my Sabre DAC Works on my HTC M8 but not on my memul!
its even not show using "lsusb"
i just got the USB-C Version of the Sabre DAC and replaced the
cable with a USB-OTG one, tested on my M8, works but not on the Mini 2.
In one Thread i read that the memul supports USB Audio and someone had success with a different device
but in another thread i also read that the memul wont support it.
so, whats true now? what can i do to get it work?
i'am capable of smd/smt reworking , so if there is a mod on the device itself, let me know.
I also read that there are issues with android 7.1
thx for your help!

USB headphone port

Does the Nexus 6 support USB headphone adaptation? Older phone aux port is problematic. Can I use a USB adapter for audio purposes, while using standard headphones.

What do you mean when you say the headphone connection is problematic? Has it failed, or are you just not a fan of it?
Regarding using USB headphones, it probably will not work only because there is a dedicated (and superior) input for the purpose, meaning no need to add the capability to the USB connection. You probably would have better luck simply using a pair of Bluetooth headphones.

When plugged in standard headphones output is staticky and choppy. I am just curious if I can use the USB port to run audio from instead of the standard aux port.

And I answered your question. Use a Bluetooth headset as USB likely won't work.
BTW, your headphone jack needs to be cleaned. A drop of alcohol and plugging a pair of headphones in and out a few times should fix it.