I'm curious if it's possible to get digital out through the micro-usb port. I'm looking into a portable amp/DAC combo and like to deal with the just the bits.
The question might be, what is the best way? It can be piped through a tcp/ip stream, usb, or bluetooth. Just depends on how you want to patch the code on both ends.
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No, it does not exist yet (to my knowledge).
Essentially what it'll do is connect any HTC extUSB equipped phone to any kind of ipod docking station.
My car's head unit has an ipod cable along with steering wheel controls so what I want to do is be able to connect my TP2 to the head unit via the ipod cable such that I can control the TP2's audio from my steering wheel (and possibly on a more advanced note display the track info, though I'm not too optimistic on that). Yes, I know it would be easier using the extUSB to 3.5mm adapter but then I'd have to control playback on the phone (or possibly through MSVC if it ever listens to me correctly).
I know the pinouts of the extUSB port and the Ipod connector. No problem making an adapter there for strictly the audio and charging part. The fun part is adapting the Ipod's control signals (for next/prev track, play/pause, etc). I have not come across any kind of technical data sheet indicating the kind of signal the HTC phone is looking for to control playback. I have a E100 remote that I'd rather not reverse engineer yet. For some reason I believe drivers will need to be involved in this one.
Anyone who can help out with playback control signal info for extUSB, I'll gladly send one of these adapters out when I get around to making them.
Wiring the E100 would be your best bet...theres a tiny SMD (http://en.wikipedia.org/wiki/Surface-mount_technology probably looks like a black blob on the E100) that controls the signalling for the extUSB. There really isn't another way to wire it...I mean, you can dump the SMD, snoop through it and build your own, but really...you have a E100, just wire it up. You won't get track/title info (I don't think HTC even outputs that via the extUSB) but it'll give you full control, as far as what the E100 is capable of.
This actually has been done before for a HTC Dream.
It was discussed here http://forum.xda-developers.com/showthread.php?t=465412
The original site is down but you can see the final product here http://www.engadget.com/2008/12/28/inelegant-hack-connects-t-mobile-g1-to-ipod-dock/
I was hoping some enterprising chinese company with a lax view on copyrights and such would mass produce one but it never happened
The stereo in my car supports Ipods and Iphones via USB. The stereo recognizes the Apple devices and lets you browse the media through the stereo itself - fully cataloged. You can also use Pandora and other music software through the USB port.
When I plug my Photon into the USB port, the only thing that works is browsing the media stored locally on the phone as a USB drive. I can't stream Pandora through the USB port.
Any way around this? Any way to emulate an Iphone?
Get a bluetooth receiver
I have a nice Sony HD Radio receiver, it doesn't support bluetooth. I don't want to spend a bunch of money replacing it.
Nullinvoid said:
Get a bluetooth receiver
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Assuming the stereo has the ability to hook one in...not to mention that, they are stupid expensive in a lot of cases.
But onto the actual question, no - there is no way to emulate an iOS device. The cable for an iDevice has several extra pins, which include Audio Out - ours doesn't in the USB connector at least.
Kcarpenter said:
Assuming the stereo has the ability to hook one in...not to mention that, they are stupid expensive in a lot of cases.
But onto the actual question, no - there is no way to emulate an iOS device. The cable for an iDevice has several extra pins, which include Audio Out - ours doesn't in the USB connector at least.
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That makes sense to me. I guess the standard audio-out jack will have to do.
Thanks!
AVRCP 3.0 will have some of what you are looking for in regards to transfering current song info over to the HU. The driver is already built by BlueZ i think it is (which ever the open source driver android uses) so its just a matter of getting it in android. Maybe ICS?
For Audio its either BT or audio jack. You can also access anything on the USB partition (some support multiple devices) but some HU do not index things corectly (my eclipse will not put things in alphabetical order arggggg) so its luck of the draw.
Plus there are more HU coming out including ones now coming WITH android.
Is there a way to get audio output from this phone via the mini-USB port? I'm thinking of buying a portable DAC/AMP with USB input to bypass the DAC on the phone. Is this possible?
Don't believe this is possible. The host OS drivers must be supported.
Nosferatu. said:
Is there a way to get audio output from this phone via the mini-USB port? I'm thinking of buying a portable DAC/AMP with USB input to bypass the DAC on the phone. Is this possible?
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Yes, but it's analog audio so you can't bypass the DAC. However it may be line-level audio that is different (better? worse? Not sure) than the headphone jack.
Somewhere in either General or Accessories there's a HOWTO on making your own "dock" audio cable. This will give you analog output from the MiniUSB port by making the phone think it's in a car dock, which makes it change USB D+ and D- into analog L/R audio.
The link Entropy is referring to is this:
http://forum.xda-developers.com/showthread.php?t=1321491
EDIT and also from a quote in that thread:
Entropy512 said:
I'm 95% certain digital audio out is not possible, except maybe for MHL/HDMI audio output via the MHL adapter.
There just aren't any provisions for it.
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Entropy512 said:
Yes, but it's analog audio so you can't bypass the DAC. However it may be line-level audio that is different (better? worse? Not sure) than the headphone jack.
Somewhere in either General or Accessories there's a HOWTO on making your own "dock" audio cable. This will give you analog output from the MiniUSB port by making the phone think it's in a car dock, which makes it change USB D+ and D- into analog L/R audio.
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thanks for the info. I'm reading through that and I don't think that'll work for me. Basically I just want something I can slap into my pocket while at the gym to get better sound out of this phone. I guess a simple line-out is going to have to do and just snag an AMP only.
Would the USB OTG be a viable option for this? Just a thought...
Thanks again for the help!
let me ask you this...is there a clean way to get a "line-out" from the Galaxy S2 perhaps from the USB port (as an analog signal). I have been eye-balling the Ray Samuels Hornet as my portable amp for the Galaxy S2 and I'd like to get the best sound possible out of this phone.
http://www.raysamuelsaudio.com/products/hornet
Any idea if this would work?
http://www.ebay.ca/itm/Hifimediy-Sa...n_0&hash=item20cb2a3799&_uhb=1#ht_1314wt_1271
if combined with this:
http://www.ebay.ca/itm/Usb-type-A-f...s=63&clkid=4859388797714287148#ht_1424wt_1037
And this:
http://www.ebay.ca/itm/Micro-USB-ha...ies&hash=item2eb8f6c584&_uhb=1#ht_4275wt_1037
I'm trying to make a one-connection, more or less universal, high quality audio and charger set up for my truck. Since the DAC is USB powered i'm not sure where the power would come from in this case. The phone or that adapter. I just like the simplicity of this unit for what i am doing (it's all going in my dash).
EDIT: I took the plunge and ordered a bunch of bits that SHOULD work (a UCA202 was cheaper, so ordered it). I'll take pics and document the setup and installation, post it all when its ready. It'll take a few weeks for the stuff to get here.
What are you trying to do? Give yourself an entertainment centre in your truck?
What I have done in my truck is use a Bluetooth stereo for streaming all audio from my HTC. If I were to install one HDMI screen I could have HD TV.
For charging, I just use a USB adapter in the cigarette lighter. Make sure you get one capable of outputting 1A or more, and also fools the phone into thinking it's connected to the mains.
When at a festival the other year, I used the tailgate as a makeshift bar, and the phone was streaming music over Bluetooth. I also had the stereo remote to control the volume, and used the air conditioning to chill some drinks. Although, will use a mini fridge next time as I used a shed loads of Diesel
I have a pioneer head ( http://www.pioneerelectronics.com/PUSA/Car/CD-Receivers/FH-P8000BT ) and an iBolt cradle. What I was hoping for was to use USB to provide power and use a DAC to get better sound quality from the tunes that I get over bluetooth. This deck also has an auxiliary in on the back, but trying to avoid using the amped headphone out. I went with this deck because of the connection options and didn't care about touch screens. That's what my HOX+ or Nexus 7 are for. So having a single USB connection for everything would be great. Pretty much the only thing that iFail devices have on us.
Sent from my HTC EVARE_UL using xda app-developers app
Here is my start. I didn't get the DAC yet, and I need to wait for USB OTG with Charging before I can, but the set up is ready for it!
Sure looks good, but I'm unsure how the sound quality will be, I'm not sure how the DAC works by accessing the USB.. Does it just see it as a USB storage device? If you're playing MP3's anyway, why not just stream over Bluetooth. Once the track is digital, Idon't think that you would want to convert to analogue unless it's playing it directly.
Are your MP3's a decent bit-rate? I have never had an issue with MP3's over Bluetooth. I normally download weekly music podcasts and stream those.
I'm gonna chime in hear and say just bought the pioneer Afh x5500, and although my EVO LTE streams spotify and stock music player over Bluetooth, it does not send track info whatsoever. My note 2 did but, I prefer the EVO. So, I'm waiting for the 8500 to come in now because it has hdmi input onboard so it should be able to take hdmi to mhl and then perform correctly. As well as apradio functions. Anyone have any experience with this? Or, does anyone know how to get Bluetooth to stream song/album info to the head unit?
Sent from my EVO using Tapatalk 2
One of the #1 reasons I got the HOX+ was the 64GB storage for my FLAC collection. Originally this concept I started while I had the Galaxy S3, which with a kernel and CM 10 can enable the DAC output while allowing the device to still recieve the charge.
That said, the deck you mentioned with HDMI might just do the trick too. And it really would be universal. Hmm.... I like this deck (It was old when I got it) because I don't really care for touch/dvd in my dash. This has a big rotary control knob, and I even have the lights turn off at night so I just control everything from the phone (except Volume). But i'll look into the one you suggest.
Anyway. This set up will do the trick for now. I hard wired the charger and AUX into the stereo harness so it looks clean and stock. I doubt I'll really tell much of difference anyway without the DAC at this point. I'm not getting any line noise like I thought I might.
Well, ill write back after I get the new deck. I'm really hoping for all functions or ill have to figure something else out...
Sent from my EVO using Tapatalk 2
OP, any update on whether the DAC and cable worked with the HOX+?
I'm interested in getting a DAC to work with my high impedance in ear monitors. The driver in the phone doesn't have enough output power to adequately drive them.
Question for you folks, as I could not find anything in the Huawei literature
I'm looking at the Apple USB-C to 3.5mm adapter, which has a DAC and from what I can see, a pretty good one for 10$ (low noise, flat curve, etc ).
But obviously this will only work of the Mate 20 pro outputs digital audio via the USB port...and I only have the supplied adapter to play.
Does anybody know if this phone sends both analog and digital audio over usb or which one?
The USB-C audio mess is a nightmare, I didn't realize that there is no frikkin consensus or universal solution.
No one?
EDIT: let me be the nice guy here and say that from what I gathered (and it's mostly P20 Pro info) the phones SHOULD send BOTH digital and analog audio to USB-C.
I would still appreciate some educated comment from a user that has tried an active (with a DAC) USBc-to-3.5mm adapter.
I was planning on trying to convert my my data from analog into digital BUT
So I've been reaching for hours now....
My car only will receive analog an I was in the process of buying or make an adaptor from a apple 30pin (that only outputs analog) to mate pro 20 usb-c 3.1 but I've just worked out it also supports USB c 2.0 an it uses analog audio as an out put an input soooo I'm pretty sure we can, I'm just gonna botch up a cable an give it a go to see what happens, if I fry my phone I'll be Back On here asap ahaha
The cable you mention is just a passthrough cable, similar to a £2 version from ebay.
It does not have any DAC or otherwise active circuitry - just a cable.