HDMI volume control - Connected Car

I have this Android based head unit in my Ford Focus......
https://www.ebay.co.uk/itm/Ford-Focus-Mondeo-S-Max-Radio-Android-7-1-GPS-Sat-Nav-Car-CD-DVD-Player-Stereo/182719184022?hash=item2a8ae97c96:g:rpAAAOSwV~1Zk-uw
I got this one because it has an HDMI output.I need this because I have an audio DSP unit that needs a digital input (optical or coaxial) which I get from an HDMI to optical convertor.The problem I have is that the HDMI output is fixed at full volume which is independent of what the head unit is set to as it's designed to feed headrest monitors/headphones etc that have their own volume controls.
The DSP unit (Mini DSP Nano digi) is supposed to be able to work with a learning IR remote to give a master volume control,which if it worked would be perfect for this system.But despite spending countless hours programming and hacking with different IR remotes and even cloning with an Arduino,I still can't get it to work and have had no real help on the Mini DSP forums.
I can't find an app that would make the HDMI audio output track with the head unit's main volume control.Am I searching for the wrong thing,or is there another known way of doing this?

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Bluetooth Mic With Aux Out for Car

So I tried searching but I feel like this is a pretty specific item that I'm looking for so sifting through pages and pages of bluetooth headsets and separate car audio setups was frustrating me.
What I'm looking for is a small mic that I can mount near my sun visor that is wired to a bluetooth receiver that connects to the aux input in my car. This would allow my phone to connect via bluetooth and have a handsfree setup that would play through the car stereo without any wires to my phone and without using the phone speaker or mic. Can anybody tell me if such a system exists? I've been googling different terms trying to find things but the best things I can find are proprietary connections for stereos and I would like to stick with my OEM radio.
Thanks for the help, and I do apologize if I overlooked a topic discussing this.
This any help?
ptp.net.au/comfort_9060smart_ANZ.html
That is close to what I'm looking for but I can't find any that just hook in directly through a stereo aux cable, I don't want to have to hook into the back of my head unit. It looks like some of their products may possibly do this, but it seems like they are more complicated so the price is significantly higher. Still looking. Thanks for the help though.
There are a number of units out there that will transmit over FM frequency. This isn't exactly what you're looking for, but it will do the trick. Instead of running the cable to your Stereo AUX port, just tune your radio to the specific station and you'll hear the audio through you car speakers.
This is what I have:
http://direct.motorola.com/hellomoto/t505/
It also has a loud speaker right in it so you can even use it without the FM radio if you desire. You press a button on the back and it'll search for an "open" FM channel and then it speaks the channel number for you to tune into.
Has the added benefit of allowing you to listen to music if you have it on your phone. Includes buttons on the side to allow you to change tracks backward and forward.
Dunno if your still in search for one but Scosche just came out with THIS. It also does Bluetooth Stereo which is a plus!
Hope this helps
I've been hunting for a solution as well (at least one that doesn't require me to buy a new headunit).
I'd love to get an fm transmitter or direct fm line input that supports a2dp with RDS, and has decent transmit power. The soundfly BT ultimate does most of this, but doesn't have RDS via bluetooth. It's a small detail, but it'd be cool to have. Any ideas?

[Q] Car infotainment device

I would like to build an Android car infotainment device to replace all my gadgets inside the car. One option would be a micro PC with USB touchscreen and a lot of devices connected via USB. The other one would be an Android gadget, either small tablet or TV box.
The biggest question I have is: what Android devices support 5.1 audio? This is a must, though I actually can use only 4 channels. What audio formats are supported for this?
The other question would be TMC - the FM kind, not online.
Are there any embedded platforms out there (except PC and Android) which support multi-channel audio?
Has anyone done this before? I might be reinventing the wheel.
No updates? Either nobody knows about Android 5.1 sound output or they are working under NDAs.
Are you planning on keeping a headunit to control volume, do you want am/fm radio, etc....
without a headunit you will need an amp where you can use the headphone to rca adapter and usually its the amp that would add front and rear to the left/right output of your android device so you would still get the 4 chan output effect. to go for the 5.1 chan you will need another device that actually controls the 5 speakers plus the subwoofer which might be tricky but I'm sure its not impossible.
the setup I was going to go with was a amp that I can mount its power controls (left right front back and volume) (or amp/eq combo) to where I can reach it and build a mount for a 7in (possibly diff size not sure depends on how it will look) and use the heaphone to rca adapter to power the audio and put the usb inside the dash possibly with a little hub if they make it (that way not only is it getting power from it, if it allows, the addition of say a thumb drive with added music/movies. some tablets/phones have fm radios built in as long as something is plugged into the headphone jack (my new phone doesn't seem to have it but thats a feature I will be looking for in a tablet)
4chan amp
eq that would allow 2 chan in and 4 chan out plus sub out (if you have a separate sub amp)
I just want to know if there are any android devices that are able to stream 5.1, I can take it from there. Same question about TMC support.
Some details:
My car is already fitted from the factory with 4 channel preamp and 12 speakers including subwoofer low-pass. It has low-level input for those channels, worst case I would buy a preamp.
FM is pretty much given on most Android devices, probably excluding some tablets, but I won't actually miss it if it's not there.
TMC would be nice since all Androids usually have a GPS sensor and sometimes compass.
Anyway, it was mostly a request for suggestions or even a rant - I'm surprised that something like this doesn't exist yet. With the exception of dedicated units going >$$$-$$$$, an alternative set-up would be a medium-range blueray player coupled with an Android tablet. Music control could be set up with DLNA, bluetooth streaming or mixing player and android audio would be a bit harder but not impossible.
hey friends
this is a nice thought and you are absolutely great.
this is wonderful thread
........................
Great Idea
Hi,
Currently I'm also thinking about installing an android tablet in my car to have music, navigation, movie player, speed camera warning, etc. But the biggest problem is the sound. I want to connect tablet with car audio using jack-jack cable. Everything is fine till the AUX source is selected in car audio device, but when I switch it to Tuner or CD - the sound from tablet is cutted off, so e.g. navigation announcement are not heard.
Any suggestions for this issue?
audio rom
its a shame that there are many many roms but none fur special purposes like this.
we need a car rom
[email protected] said:
Hi,
Currently I'm also thinking about installing an android tablet in my car to have music, navigation, movie player, speed camera warning, etc. But the biggest problem is the sound. I want to connect tablet with car audio using jack-jack cable. Everything is fine till the AUX source is selected in car audio device, but when I switch it to Tuner or CD - the sound from tablet is cutted off, so e.g. navigation announcement are not heard.
Any suggestions for this issue?
Click to expand...
Click to collapse
Only solution can see is to run the audio from the tablet alone. I.e. use the tablet to provide both radio tuner AND navigation. You will end up using the car system purely as an amplifier.
Cris123 said:
Only solution can see is to run the audio from the tablet alone. I.e. use the tablet to provide both radio tuner AND navigation. You will end up using the car system purely as an amplifier.
Click to expand...
Click to collapse
This would be what I would do in this situation. Or just unplug the audio cable from the tablet when using other radio options so the navigation will come through the tablet's speakers.
I want to do something similar but rather than purchase a new device I want to use my Note2. No head unit at all. The Note2 would likely be dedicated to this use and I'd get a different phone to use as, well, a phone.
For sound I was hoping I could use USB OTG to connect a USB sound card with 5.1 output but I'm not sure if this would work. I want to use the sound card instead of audio direct out of the headphone jack because that reduces my connected cables to just one (easier) and should provide at least 4 channel output which eliminates the need for another device to control volume, fader, and balance.
For radio I was going to use SDR for AM/FM (and more) via a cheap USB TV tuner.
http://sdrtouch.com/
Where I'm stuck now is that I'd like to be able to connect an iProduct (iPhone/iPod) like you can to most car radios and control/stream music from the iProduct, via the Android Note2 using USB OTG again. I cannot find how to do this but the Parrot Asteroid Smart runs Android and it seems to be able to do it so it must be possible.
http://www.parrot.com/usa/products/asteroid-range/parrot-asteroid-smart/
Any info anyone can provide regarding the sound card and iPod integration would be highly appreciated.
You can go wireless and use some AirPlay receiver for Android.
I don't know about wired solutions, the classic iPod connector has ~30 pins and some of them are used for audio and some of them are used for serial-like playlist control plus current track information.
brainwash123 said:
You can go wireless and use some AirPlay receiver for Android.
I don't know about wired solutions, the classic iPod connector has ~30 pins and some of them are used for audio and some of them are used for serial-like playlist control plus current track information.
Click to expand...
Click to collapse
It's just a USB to iPod cable that they use for everything else... Parrot Asteroid Smart that I linked to has it as do most modern stock head units.
Did a little more googling and it seems several companies sell android head units that support iPod.
Why don't you use a USB DAC? There are a few out there that are surround sound capable.
Out from the DAC into an eq preamp and out to your existing amplifier. The eq preamp has main volume controls as well as sub control with dedicated output.
Also there are head units out there that are just "receivers" capable of accepting a digital inputs and outputting 5.1 signal via RCA.
I installed a nexus 7 2013 in my VW, currently using Bluetooth to connect to a receiver where it the outputs to an rca input on my deck that was relocated to my glovebox. I am planning on replacing the Bluetooth adaptor with a USB DAC in order to achieve a higher quality sound.
I am currently doing a similar install in a 2010 charger, a deck will not be used however as I will be using the DAC method with an eq and output to the factory amp. I considered going the android TV box route as I have a MINIX box, but there is some work involved in getting the touchscreen to function properly as it is not set up for this out of the box.
You can purchase a double din deck from eBay (I stumbled across it a few days ago but didn't write the link down) it has a dual os system. It uses android for the car audio function and windows for the car PC function. Not sure how well it works but it got reasonable reviews.
Edit: ...and once again I answer without reading the whole thread...:silly:
Is it somehow easier to get all the various apps on the phone to output audio to a DAC than a USB sound card?
unL33T said:
Is it somehow easier to get all the various apps on the phone to output audio to a DAC than a USB sound card?
Click to expand...
Click to collapse
I believe when the device detects a DAC (must use an otg cable BTW) it automatically re routes all audio out the USB. You can disable automatic USB audio routing in developer settings.
k.s.deviate said:
I believe when the device detects a DAC (must use an otg cable BTW) it automatically re routes all audio out the USB. You can disable automatic USB audio routing in developer settings.
Click to expand...
Click to collapse
That sounds easier. Thanks for the tip.
Well I can't find any information regarding the iPod integration and I've found next to nothing for DVD video and audio CD playback and radio and backup camera functionality would also take some mucking about so it looks like I'd probably be better off buying something like this:
http://www.ebay.com/itm/7-Android-4...621?pt=LH_DefaultDomain_0&hash=item2a31320af5
Which has it all sorted out already. So much for that fun idea. No idea what apps they use for all that stuff.
Which has it all sorted out already. So much for that fun idea. No idea what apps they use for all that stuff.[/QUOTE]
That unit looks slow at only dual-core. It will probably be sluggish when multi-tasking.
The main chip probably supports several I2S devices (aux in/adc, tuner/adc, DVD) and routing plus demuxing is done via linux hardware control.
The DVD player and tuner probably support the i2c or spi protocol to control seeking and other functions. This is again controllable via the linux devices.
Usually the consumer devices don't have these easily exposed and it's probably a non-trivial task to piggyback on existing hardware, assuming the needed connections are broken out on the board. As far as I can see the only Android devices with CD or DVD are the car players like above.
Another option would be to take the sound from the HDMI signal. A DVD player/tuner can be wired in parallel with an HDMI switcher. However controlling the tracks would not be easy, it would require emulating the remote with an IR transmitter.

[Q] Is it possible to hook up a remote to control the SIII's media player?

So this is what I am trying to find out.
I use my SIII in my truck as a media player on long trips hooking it up to my car stereo's line-in input.
What I want to do is to mount a mount/cradle so I can leave the SIII securely mounted/seated somewhere on the dash board and control the music player apps ( Playerpro or the stock music player) through a handheld wireless remote control.
I know the SIII does not have IR receiver so that is out but is there a way to hook up a BT or wifi remote so I can safely control the music playback and navigate up/down folders of music while driving?
Thanks for any ideas you guys might have on this.
I agree it would be useful to have a physical remote with real tactile buttons for use in car, bike or running.
As far as I know, currently the closest option would be a bluetooth remote as there is a bluetooth profile for media control. However, I think it's probably somewhat more limited than what you're looking for. I believe the profile is limited to play/pause, FF, REW, forward skip and back skip. If you're able/willing to setup your playlist in advance so that you're okay with those controls than it should be workable. You won't be able to navigate any menu system.
The other issue is I'm not aware (but you could always try to google for it) of any standalone bluetooth remote. Every one I've ever seen are integrated into some other device. I have remote functions on my bluetooth headphones and my car has an integrated bluetooth sound system and can remote control playback through the dash and steering wheel controls.
If that would work for you, you could consider replacing your stereo deck with one that has bluetooth integrated then you'll be able to control playback through the deck's controls. You'll probably need to stream the audio over bluetooth as well for that to work.
Thanks for the BT suggestion. I will look into it and see if there is anything out there that will work. If I can get a BT solution working without too much cost/effort, I will gladly make a bunch of playlists if that is all that can be controlled by the BT media control profile.
The reason I 'need' to use my S3 in my car is that in my truck (2005 Chevy Avalanche) unlike the current model GM trucks, has no provision for any type of AUX input except for the one I rigged up intercepting the XM module's analog audio output. It is getting to the point that I am really tempted to just replace the head unit with one that will take an USB flash drive and all my problems will be solved.
Thanks again for taking the time to post a reply. :good:
tmagritte said:
I agree it would be useful to have a physical remote with real tactile buttons for use in car, bike or running.
As far as I know, currently the closest option would be a bluetooth remote as there is a bluetooth profile for media control. However, I think it's probably somewhat more limited than what you're looking for. I believe the profile is limited to play/pause, FF, REW, forward skip and back skip. If you're able/willing to setup your playlist in advance so that you're okay with those controls than it should be workable. You won't be able to navigate any menu system.
The other issue is I'm not aware (but you could always try to google for it) of any standalone bluetooth remote. Every one I've ever seen are integrated into some other device. I have remote functions on my bluetooth headphones and my car has an integrated bluetooth sound system and can remote control playback through the dash and steering wheel controls.
If that would work for you, you could consider replacing your stereo deck with one that has bluetooth integrated then you'll be able to control playback through the deck's controls. You'll probably need to stream the audio over bluetooth as well for that to work.
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[Q] How to connect phone to receiver?

Hey everybody, my friend recently gave me his old yamaha receiver. the model is RX-V2095. I got the speakers to work but it only works when the effect [on] mode on the receiver is turned on. Problem is it sounds extremely bad and i would like to adjust my own bass and treble settings. im using a rca female cable and connecting a 3.5mm jack from my phone to the end of the rca cables which are connected to my receiver.
this will be very hard to help over the internet but i will give it a try.
Here is the user manual for the device:
http://download.yamaha.com/api/asset/file/?language=en&site=usa.yamaha.com&asset_id=856
You have the correct output set as CD. But i noticed on the front for line out record it shows CD. I would rotate that knob so its pointing up (remote select)
i noticed that you are using channel A and B. Do you have 2 sets of speakers plugged in? If not, i would suggest turning off one channel A or B which ever is not in use. (older receivers might split power between the channels when both are set to on)
you will also need to take it out of "surround mode" and put it on stereo mode. this will remove most effects and you should be able to control EQ with the knobs in front.
synisterwolf said:
this will be very hard to help over the internet but i will give it a try.
Here is the user manual for the device:
http://download.yamaha.com/api/asset/file/?language=en&site=usa.yamaha.com&asset_id=856
You have the correct output set as CD. But i noticed on the front for line out record it shows CD. I would rotate that knob so its pointing up (remote select)
i noticed that you are using channel A and B. Do you have 2 sets of speakers plugged in? If not, i would suggest turning off one channel A or B which ever is not in use. (older receivers might split power between the channels when both are set to on)
you will also need to take it out of "surround mode" and put it on stereo mode. this will remove most effects and you should be able to control EQ with the knobs in front.
Click to expand...
Click to collapse
Thanks you, i figured most of it out but i don't have the remote to change those settings and set the speakers to small to allow my subwoofer to play. Does best buy have anything that will work with this as a remote?
nty123 said:
Thanks you, i figured most of it out but i don't have the remote to change those settings and set the speakers to small to allow my subwoofer to play. Does best buy have anything that will work with this as a remote?
Click to expand...
Click to collapse
Your phone has an IR blaster and there are some apps in market that could do it.
I have a Logitech harmony 650 remote that controls my sony receiver. you could check their website out and see if itll work for you.

Looking for (not so?) simple bluetooth device

Hello!
So I have some speakers that I like, that have only the mini jack input cable, which is right now plugged to the TV. What I would like to do is to play audio to these speakers through a bluetooth receiver BUT there is a catch - I would love to have some simple option to switch between TV input and bluetooth input, so that I don't have unplug/plug the mini jack cable each time I switch the source.
Do you know some simple device, that can do that? For now I think that I would need to combine multiple devices, to achieve it, but maybe someone knows the perfect solution for that.
Cheers,
Albert

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