Develop Bugs

[Q] Audio line-out for Galaxy Nexus

Hello all ,
Is there a way to get an audio line-out from the Galaxy Nexus, either using an adapter or a docking station? I'm not looking for a solution like the one offered by the Samsung Galaxy S2's car dock (which streams bluetooth audio from the phone to the dock, then the dock turns the bluetooth streaming to analog audio through a 3.5mm port) but rather something like an adapter for the MHL port or from the docking station.
Appreciate all the help!

The obvious solution (at least to me) is to plug into the headphone jack. You could also use either the media dock or MHL adapter in conjunction with an HDMI-to-analog adapter such as the one linked below:
http://www.amazon.com/HDMI-RCA-comp...OQPU/ref=sr_1_2?ie=UTF8&qid=1321905031&sr=8-2

vespoid said:
The obvious solution (at least to me) is to plug into the headphone jack. You could also use either the media dock or MHL adapter in conjunction with an HDMI-to-analog adapter such as the one linked below:
http://www.amazon.com/HDMI-RCA-comp...OQPU/ref=sr_1_2?ie=UTF8&qid=1321905031&sr=8-2
Click to expand...
Click to collapse
He's asking for a line out solution because it will bypass the internal headphone amp that is utilized when the 3.5mm port is used. If you're plugging the phone into speakers or a sound system that way you'll get much better sound.

If the mhl -> HDMI cable adapter carries both audio and video, you could use an hdmi breakout adapter to split the digital audio. It depends on the HDMI output capabilities of the phone and the acceptability of digital audio for your needs.
Edit: would no doubt be a cumbersome solution. It all comes down to your usage scenario for the output.
Sent from my GT-P7510 using Tapatalk

Thank you vespoid, ardabey.
What OJ in Compton said, I'm looking to bypass the internal headphone amp, not sure if there are any details on the car dock or desk dock, I hope 3rd party manufacturers come up with something, any solutions are welcome.
Ali

Never thought about this, but a contactless dock with HDMI out directly to the AMP = audio bliss. Thanks to the forum for letting me see the obvious

Bumping this thread...has anyone successfully done this? I want line out audio for my car's 3.5mm AUX input - had it with my ipod and it sounded much better than through the headphone jack, as well the convenience of not having to maintain two volumes.
Hoping the official car dock that uses the 3 pin connector and has a 3.5 out would do this, but I'm worried it will just use BT to transmit the audio to the dock like I read the Nexus One dock did.

I wish too that the NG had line level out.
I think it's a limitation of the hardware. I think Apple is the online one that really uses line level out via it's dock connector.
I hope someday Google will use some sort of line level out on their reference hardware or built support directly into a newer OS.
I remember my old Dell DJ had line level out. Soooooo much better.

There is nothing wrong with the 3.5mm output sound quality wise.
Trying to drive headphone-like impedance (lower) with a line out isn't the best idea, but driving higher impedance inputs like your car deck isn't that bad as long as you let the amps do the "work" of boosting the volume and not your phone. While not optimal, the decrease in sound quality shouldn't be very noticeable.
The main advantage of the digital audio though USB (what apple does) IMO is that it eliminates the need to have both the USB plugged in to charge and the 3.5 mm cord for audio. It also allows song data to be shared and device control from the speaker/head unit. Good setups will recognize most android devices as mass USB storage and provide the same functionality, but I'm not sure how the MTS on the GN will affect this.

I would wait and see how the audio quality is from the dock. Even if it is bluetooth, the audio quality may not be that bad.

Lithoss said:
There is nothing wrong with the 3.5mm output sound quality wise.
Trying to drive headphone-like impedance (lower) with a line out isn't the best idea, but driving higher impedance inputs like your car deck isn't that bad as long as you let the amps do the "work" of boosting the volume and not your phone. While not optimal, the decrease in sound quality shouldn't be very noticeable.
The main advantage of the digital audio though USB (what apple does) IMO is that it eliminates the need to have both the USB plugged in to charge and the 3.5 mm cord for audio. It also allows song data to be shared and device control from the speaker/head unit. Good setups will recognize most android devices as mass USB storage and provide the same functionality, but I'm not sure how the MTS on the GN will affect this.
Click to expand...
Click to collapse
The problem is, that if the head unit supports MTP then yes it can read the device like mass-storage, thats fine, but it doesn't allow you to stream media from radio apps, youtube and turn-by-turn directions from gps, this is what we are looking for...
technically it's not sending analog audio output through the USB, its just reading the stored media on the phone.
I have read that samsung phones are able to accomplish sending analog audio through the USB while charging, with the correct resistance values (adapter) or possibly with software pointing the audio in that direction (for example code build into the framework/API)
this is one major thing that Android lacks over iPhone, this problem should be addressed ASAP. I'm hoping CM9 might be able to find a solution for this.

I agree, i hope they fix this soon toi. It would make the development of accessories much easier for all android phones. Seems like a no brainer but I guess Google has other priorities...

A feature request for Android 4.0 to enable USB audio:
http://code.google.com/p/android/issues/detail?id=24614

Juvenall said:
A feature request for Android 4.0 to enable USB audio:
http://code.google.com/p/android/issues/detail?id=24614
Click to expand...
Click to collapse
Just starred this, if the hardware is able to do that I find it completely stupid that they do not allow it.
Smartphones audio amps are not exactly famous for being top-quality so having this possibility would be great.

Thanks. The lack of this feature is ridiculous/mind-boggling/suprising.

Well, if you were waiting for the card dock to solve your problems... it doesn't. Plugging into the dock's "line out" gets you amp driven sound. I really do not understand why this is such an issue for Android. When I plug somoething into my 3 year old Nokia smartphone a window pops up for me to choose headphones, headset or line out. Why can't ICS offer the option and if in the car dock, default to line out? A USB solution is not going to help if you are using the car dock.

Juvenall said:
A feature request for Android 4.0 to enable USB audio:
http://code.google.com/p/android/issues/detail?id=24614
Click to expand...
Click to collapse
Yes, most def. I want to use several USB dacs on hand. Off for some op amp rollin'.
Edit: The pogo pin dock has a 3.5mm analog/digital output, FYI

Oops

flacoff said:
Edit: The pogo pin dock has a 3.5mm analog/digital output, FYI
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Click to collapse
Which if I understand correctly uses Bluetooth to transmit compressed audio from the phone to the dock, then delivers it through the 3.5mm jack. Why not just have a digital signal go through the USB port!?

ali87 said:
Which if I understand correctly uses Bluetooth to transmit compressed audio from the phone to the dock, then delivers it through the 3.5mm jack. Why not just have a digital signal go through the USB port!?
Click to expand...
Click to collapse
actually the pogo pin transfers the digitial audio and the dock decodes it into analog to the 3.5mm output

How to connect phone up to receiver?

Basically I'd like to connect my phone up to my receiver, to stream music while I workout. Would this be possible? Could I use the headphone jack, and would that be very good quality?
I was looking into a microusb to hdmi converter, but not sure that'd work yet.

Iczer said:
Basically I'd like to connect my phone up to my receiver, to stream music while I workout. Would this be possible? Could I use the headphone jack, and would that be very good quality?
I was looking into a microusb to hdmi converter, but not sure that'd work yet.
Click to expand...
Click to collapse
Go to Radio Shack (or whatever) and get a cable that is a 3.5mm stereo plug on one end, and stereo RCA (red and white plugs) on the other.
A lot cheaper, and HDMI is going to be WAY overkill unless you are trying to play high-quality sound files stored right on the phone... Anything you're going to be streaming from Pandora or any online source will be about FM radio quality.
The cable I mentioned above is even over-qualified for most internet streaming sources.

Dalmus said:
Go to Radio Shack (or whatever) and get a cable that is a 3.5mm stereo plug on one end, and stereo RCA (red and white plugs) on the other.
A lot cheaper, and HDMI is going to be WAY overkill unless you are trying to play high-quality sound files stored right on the phone... Anything you're going to be streaming from Pandora or any online source will be about FM radio quality.
The cable I mentioned above is even over-qualified for most internet streaming sources.
Click to expand...
Click to collapse
I saw an micro usb to HDMI for $10 off monoprice, that was the only reason I was looking at that route.

Iczer said:
I saw an micro usb to HDMI for $10 off monoprice, that was the only reason I was looking at that route.
Click to expand...
Click to collapse
That would make sense. I haven't seen them that low (of course, I haven't really looked for one either, so I guess it doesn't mean much for me to say that. )
The one disadvantage of using the USB would be that I don't think your phone would charge while plugged into the receiver.
If I remember the HDMI specs correctly, some cables are capable of delivering a charge, but very few (if any) components have the proper ports to provide a charge...yet.

Use an auxiliary to auxiliary . I use one in my truck (no bt) and my radio at work. $10 at Target.
Google Android Fan Network @chefdave12118.

I like the BlueBridge Bluetooth to stereo adapter:
http://www.buy.com/pr/product.aspx?sku=213820936
I use it at home, in my truck. Love it!

Monoprice has a USB to hdmi with charger port for 10 bucks. Search mhl

Galaxy Nexus to iPod accesories

I have no clue what section this question would belong in. Mods, feel free to move this if there is a better place for it.
I haven't used my iPod since getting my first android, three androids ago. I do however have an iPod dock connected to my AV receiver at home, and a dock connector wired into my car. Has anyone figured out a way to use iPod accessories with their android? Ideally I wish I had the programming knowledge to emulate the iPod and have all the controls functional but that is way beyond what I'm capable of. I was thinking of getting a female dock connector and connecting a micro usb and 3.5mm audio jack so I could both charge and output audio through it. Also, what comes out of the MHL/USB on the Galaxy? Could I get analog audio from it so I would just have one usb cable to connect to charge and listen? Thoughts?

Come on... no one?

It -may- charge w/ the dock to micro usb adapter. That's pretty much it.
You won't get audio out of it, nor data more than likely (even power is up-in-the-air) simply because the system doesn't have the software to work with the connections made available w/ that adapter.
Edit: Also, you probably should've posted this in Q&A.

It would be pretty difficult to do something like that and would probably require building a device that would sit between the iPod dock and the Android phone.
It might be possible to do something like this. As long as your dock uses analog audio instead of usb audio like my car radio uses.
goo . gl / oeCYW Remove the spaces. I'm a new member and can't post links yet.

So you are saying you think it's looking to see if an ipod is connected before it looks for the audio coming out of it? I was under the assumption it was always ready for it since I need to first manually switch to the ipod input on the stereo... hmmm...

t0ny7 said:
It would be pretty difficult to do something like that and would probably require building a device that would sit between the iPod dock and the Android phone.
It might be possible to do something like this. As long as your dock uses analog audio instead of usb audio like my car radio uses.
goo.gl/oeCYW Remove the spaces. I'm a new member and can't post links yet.
Click to expand...
Click to collapse
Nice. That's exactly what I was thinking of doing.

Well that link was encouraging enough that at least someone has gotten this to work. I went ahead and ordered a female dock connector from here http://aloaudio.com/30-female-dock-connector-with-wire-board.html. At worst I'm out $14.35. I'll update the thread with what I find out.

The dock connector arrived today. I haven't messed around with the one in my car but I did test the one on my AV receiver. Things I've learned:
1) If the receiver is on, there is a steady 4.9 volts available to charge my Galaxy.
2) There is some sort of check to see if an ipod is connected before it will switch to listen for audio on the input pins. I can actually hear a click of a relay when I connect my ipod that I do not hear with the wire connected.
3) I placed the ipod in the dock to get it to switch. I then I wired a headphone cable to the audio in pins of the dock. To my surprise I could play music from my Galaxy just fine.
If I could just figure out what it is looking for to know whether or not an ipod is connected, this should work just fine.

I just want to update this thread. I finally got around to messing with this again (yes 4 months later).
I have it working perfectly for audio in my car! As long as pins 1 & 2 are shorted it switches the head unit into iPod mode and audio gets sent to the speakers. Pins 2, 3, 4 are Ground, Right, and Left audio. I would record a video of it working but the only thing I have is my GN and I can't use it to play music and record video.
I gave up on my home theater receiver. There's power there to charge it but I can't figure out how to fool it to listen for the audio.

Y not just buy the ipod to universal Bluetooth adapter? That way the phone doesn't even have to be docked? Sprint sells it

I've been using this to play music through my old ipod fm transmitter, works great.
http://www.amazon.com/Grom-Audio-iPhone-converter-regular/dp/B00545WG4O

jjlyons said:
I've been using this to play music through my old ipod fm transmitter, works great.
http://www.amazon.com/Grom-Audio-iPhone-converter-regular/dp/B00545WG4O
Click to expand...
Click to collapse
I may have to buy one of those for my Klipsch iFi speakers. I was thinking about getting the official dock from Expansys, running this audio cable to the iPod input, and adding some other stuff via NFC tag to make the setup sort of like Ford Sync in my car.

[Q]iPAQ bluetooth keyboard working with Galaxy Nexus?
Hi everybody:
I had a iPAQ BT foldable keyboard (SPP, no HID), and I wish it works on my Galaxy Nexus for daily use (when playing games, or typing with Chinese input methods).
I've tried some apps, and keyPro Demo works, but it gave me a new IME which only support English input. I wondered if anybody here give me some help. Thanks all!!

hey guys, I know this thread is a little outdated but there is another option to get audio and charging from the 30-pin apple connection. I personally haven't tried this but it looks like it could work:
http://www.amazon.com/CableJive-doc...UTF8&qid=1342110636&sr=8-2&keywords=dock+boss

I own an Audi Q5 and it can stream music from either iPod, USB or 3.5'' mm jack using a Media Link Cable. It sounds nice, but your device has be locked in the glove box!! So i decided to get this device from amazon - "http://www.amazon.com/gp/product/B0087XSV08/ref=oh_details_o01_s00_i01". It streams music to your receiver via Bluetooth. I love this solution because i almost always use Google Map for my GPS navigation.
It works great because i have a Bose Sounddock with an iPod jack too.

1cewolf said:
I may have to buy one of those for my Klipsch iFi speakers. I was thinking about getting the official dock from Expansys, running this audio cable to the iPod input, and adding some other stuff via NFC tag to make the setup sort of like Ford Sync in my car.
Click to expand...
Click to collapse
I'm a little late to this party but I too am looking for a solution to convert my Klipsch iFi into a Bluetooth dock so we can use our Evo LTE's on it. I have a 1st gen iPod Nano on it but 2gb of music (the 4gb one we had died) just isn't getting it done. I also want the ability to run internet radio stations and playlists and what not. I bought about the cheapest iPod Bluetooth adapter available on eBay and was disappointed that it did not work. The LED on top wouldn't even light up to indicate it was getting power. They seller sent me another one and unfortunately it also does not work. The seller assured me that he tests every single one that is sent (uh huh, I believe you) so it would appear as though this particular adapter will not work. As soon as I can get a refund I will start going up the list as far as price goes. Just wonder if you were ever able to find a solution for your iFi to save me the effort of order several different adapters until I find one that works. I don't see why this one didn't work as the iFi should work just like every other iPod dock on the market as far as how it interfaces with the iPod/adapter.
---------- Post added at 12:14 PM ---------- Previous post was at 12:11 PM ----------
inspiron41 said:
I own an Audi Q5 and it can stream music from either iPod, USB or 3.5'' mm jack using a Media Link Cable. It sounds nice, but your device has be locked in the glove box!! So i decided to get this device from amazon - "http://www.amazon.com/gp/product/B0087XSV08/ref=oh_details_o01_s00_i01". It streams music to your receiver via Bluetooth. I love this solution because i almost always use Google Map for my GPS navigation.
It works great because i have a Bose Sounddock with an iPod jack too.
Click to expand...
Click to collapse
This adapter you linked to looks exactly like the adapter I got from eBay but I only paid $15.99 w/free shipping. If anyone else is interested in trying out one of these types of adapters I would check eBay first. While mine didn't work for my iFi specifically the seller has good feedback so I would imagine it works for most. My issue is probably Klipsch iFi specific. I plan to order a different version from another seller for a few bucks more and can report back my findings if it works or not as another option but I wouldn't spend $40 for what looks exactly like what I paid $16 shipped for.

LOD for the E4GT ?

Does anyone know if it is possible to get an LOD for the Epic 4G Touch?
In case you have no idea what this means, here's your lesson in audiophile gear for the day:
Line Out Dock (a.k.a. LOD), n.: a cable commonly used on audio devices which creates a "line out" similar to a headphone jack but with no volume control and often better analog signal quality. This is useful in that it allows a user to bypass the headphone jack of a device and run the audio signal straight into an external amplifier. This is often done when an audiophile-type individual has headphones which benefit from a audio source with greater output power than a portable device typically provides.
Examples of LOD's:
Apple iPod/iPhone
Sansa Fuze

Bazirker said:
Does anyone know if it is possible to get an LOD for the Epic 4G Touch?
In case you have no idea what this means, here's your lesson in audiophile gear for the day:
Line Out Dock (a.k.a. LOD), n.: a cable commonly used on audio devices which creates a "line out" similar to a headphone jack but with no volume control and often better analog signal quality. This is useful in that it allows a user to bypass the headphone jack of a device and run the audio signal straight into an external amplifier. This is often done when an audiophile-type individual has headphones which benefit from a audio source with greater output power than a portable device typically provides.
Examples of LOD's:
Apple iPod/iPhone
Sansa Fuze
Click to expand...
Click to collapse
I googled epic 4g touch dock:
http://www.samsung.com/us/mobile/cell-phones-accessories/EDD-D1D9BEGSTA

Samsung HM3700 Stereo bluetooth headset
I bought the Samsung HM3700 Stereo bluetooth headset which comes with one. I am sure Monoprice.com has one or even Ebay; but if it's worth 24.99 to yah you can buy the headset.

Sort of what I'm after, but not really. I don't want a dock, I want a cable. This is for portable listening on the go with an amp.
Thanks!

Gorguts said:
I bought the Samsung HM3700 Stereo bluetooth headset which comes with one. I am sure Monoprice.com has one or even Ebay; but if it's worth 24.99 to yah you can buy the headset.
Click to expand...
Click to collapse
Not sure I see what you're talking about; our just looks like a bluetooth headset to me.

The pinout for micro usb is the same across phones, right? If so, this should work.

fonseca898 said:
The pinout for micro usb is the same across phones, right? If so, this should work.
Click to expand...
Click to collapse
Wow...if this works...
Does it mean I can listen to pandora on my phone and stream it through this LOD into my cars aux ports for superior sound quality?!

fonseca898 said:
The pinout for micro usb is the same across phones, right? If so, this should work.
Click to expand...
Click to collapse
That is quite interesting and just might work.
What remains to be seen is whether or not that provides superior sound quality to the headphone jack. It just occurred to me that the Samsung car dock (which I have) is essentially the same thing as that USB micro to 3.5mm jack plug unless the phone has software which can recognize the difference. In this case, volume would still be controlled via the phone. I might have to test and see if I can hear a difference in sound quality, but I doubt it (or at least doubt that the dock will be better.)

I have both the official samsung desk dock, and car dock. They both have 3.5mm audio line out. Isn't that what you're asking for? I didn't know it had a "fancy" term though..
Edit: Maybe it's not exactly what you're asking for. I think you're hoping to get line level straight out of the DAC, which I don't think is possible with the SGSII. The audio dock line out is around the same quality as the headphone jack (as far as my "non audiophile" ears can tell) and it's certainly volume-controlled by software. Anyhow, some of the new custom ROMs out have beats audio and dspmanager built-in, which go a long way into tweaking the way audio exits the device. You may want to look into that.

Yeah the desk dock is still less portable than I'm looking for. I have DSP Manager on my phone and it helps to some extent. Guess I'm just stuck with the headphone jack. Thanks!

im pretty sure you need usb-host first, i think a usb dac has been used back on the nook color w/cm7 but then you lose portability and all that.
related?? http://code.google.com/p/android/issues/detail?id=24614

Output to RCA cables.. Is it possible?

I want to output my video to my dvd screen in my car. My input for the aux of the dvd player are RCA. Previously I was using a 3.5mm jack to output to RCA and this worked with my old phone (t mobile vibrant). Is there anyway to output the HDMI on this phone to rca inputs? Any help is appreciated. I posted in this thread because I'm assuming the fix would be an accessory. Thanks.

I doubt you'll find a cable to do it. hdmi is digital and the composite signal needed by the vehicle is analog. You'll need something like this:
http://www.amazon.com/HDMI-Composite-S-Video-Converter-3RCA/dp/B0047PDBP0/ref=pd_sxp_grid_i_0_0

Thanks for the quick reply, that was what I was afraid of. Guess I'm stuck with audio out for now.

Possible fix
tacomaguy20 said:
I want to output my video to my dvd screen in my car. My input for the aux of the dvd player are RCA. Previously I was using a 3.5mm jack to output to RCA and this worked with my old phone (t mobile vibrant). Is there anyway to output the HDMI on this phone to rca inputs? Any help is appreciated. I posted in this thread because I'm assuming the fix would be an accessory. Thanks.
Click to expand...
Click to collapse
I finally came up with a solution that works for me. My goal was to output the video of my phone to my dvd screen in my car. The dvd player has RCA inputs. Well rather than buying an hdmi adapter and trying to find a dc power source compatible with my car, I found an alternative solution. My old phone is a t-mobile vibrant which outputs video through a 3.5mm adapter which splits into RCA inputs. It worked fine for playing video on the screen but was outdated and I had to upgrade. The GS3 only outputs hdmi and Bluetooth is not an option for video so I had a great idea. Why not use my GS3 to wifi tether to my old Vibrant and stream audio / video through the wireless connection. So I rooted the phone, downloaded wifi tether from the play store (free) and set up my vibrant to connect to my GS3 through tether. In order to share files, I downloaded bubbleupnp (free with limitations) from the play store and now I can play files from my GS3, which wirelessly plays on my vibrant, which outputs to my RCA inputs. Its kind of a roundabout way of doing what I wanted but it works well. I can keep my vibrant in my car hooked up to a car charger, while my GS3 can be docked and charging as well. The only thing I have to do is remember to turn on my wifi tether when I get in my car and my vibrant connects automatically. And the best part is that if I play video or music from my GS3 library, I'm not downloading anything so no data usage from the wifi tether. Pretty awesome. I imagine this will work with any two DLNA devices so long as one of them has video out through rca or and older adapter. Hope this helps someone out.

And do you have two cellphones batteries to drain... have you connected 2 car chargers or anything like that? Your car panel will be with too many cables, no?

tacomaguy20 said:
I want to output my video to my dvd screen in my car. My input for the aux of the dvd player are RCA. Previously I was using a 3.5mm jack to output to RCA and this worked with my old phone (t mobile vibrant). Is there anyway to output the HDMI on this phone to rca inputs? Any help is appreciated. I posted in this thread because I'm assuming the fix would be an accessory. Thanks.
Click to expand...
Click to collapse
SkzBR said:
And do you have two cellphones batteries to drain... have you connected 2 car chargers or anything like that? Your car panel will be with too many cables, no?
Click to expand...
Click to collapse
Well I do have two car chargers, One in front and one in the back. I do need to get a good mount that has power attached. I've seen the ones that plug into the lighter and they have the power built right in so that will eliminate one cable and give me a nice dock for my GS3. Not sure what I'll do with the vibrant but I won't need to access it very much so might mount it to the inside of my armrest or something. I don't think the cables will really be a problem though. I'm just happy I got it working again.