I have 2 questions about the MTP protocol on Android 4.1
How can I get it to work with in car Audio without using Bluetooth?
Also why is the Transfer Rate in MTP so much slower and if so can I mount the device as a removable device again?
Use a fm transmitter or 3.5mm to aux jack hook up.. the only two options besides Bluetooth.. also Google ended usb storage in android 3.0
Read more about it here..
http://www.androidcentral.com/ics-feature-mtp-what-it-why-use-it-and-how-set-it
Related
Hey I heard with lollipop we would have USB audio. When I connect my nexus 5 to my car through a USB cable and play some music it doesn't play from the car speakers. Whereas an iPhone was able to play music. Any help on how to make it work would be appreciated.
Probably your car audio needs a software upgrade to work with Android devices/L's USB DAC support.
Your car is looking for a file system, android USB audio is providing stream not a file system so this probably wont work unless the deck can emulate a small sound card or something to accept the input.
So I just purchased a GROM Audio Honda Acura 03+ USB Android iPod Bluetooth AUX adapter( SKU: HON1U3 )
http://www.gromaudio.com/store/usb_...uetooth_adapter_direct_digital_interface.html
With both the Bluetooth and USB AUX adapter it came to a pricey $229.96. What I got for that price is:
Bluetooth media and headphone profiles
USB out via AALinQ Car Music Player
OK Google Hotword still works
Con's:
You have to load your media into the AALinQ application to get it to play via USB, that means no Google Play music over USB, and all system sounds aren't automatically sent to the USB audio like with the Note 3 and previous Galaxy devices.
You don't get track titles etc via Bluetooth at least with my Note 4 on my '08 Acura MDX and the GROM connected to my XM 2 Sat input on the stock head unit.
I'm getting a weird slight crackle when audio stops and starts playing via Bluetooth, I think this is because the Grom adapter is connecting and disconnecting USB audio to the head unit, I got the same crackle when connecting my MHL USB audio connector when the car head unit was on.
Pro's:
The nice thing is that unlike a dedicated MHL USB connector which is the other way to get USB audio out on the Note 4 you aren't blocking your microphone while connected
You are charging. which I hadn't got working with USB to MHL.
Just thought this might be useful to those of us who don't have A2DP built into our car stereo's. GROM is compatible with hundreds and hundreds of vehicles, just use the Browse by auto make selector at http://www.gromaudio.com/index.html
I don't work for GROM, I paid for my unit myself, wanted to share what worked for me in case it helps one of you.
Oh and according to their FAQ the charge you're getting is 1A 5V http://www.gromaudio.com/support/usb-faq.html
Hello, new contributor to the forums.
I cannot find a straight answer regarding Lollipop's USB Audio, Google Music (or any streaming service, not stored files), and car stereos. I know that prior to 5.x, connecting via USB to a DAC/usb audio device support was device-specific. Some devices and car stereos will play music through a USB-connected Android device using MTP.
My main question is... Can an Android device stream all device audio via USB (ultimate purpose of playing music via a streaming service, Google Music) to any car stereos?
I have a couple more specific questions that I'd love answers to if you don't know the direct answer to the question above:
1) The decision to stream music via USB vs. 3.5mm: is that decision made on a device/OS/app level?
2a) I'm familiar with the handshake and protocol that devices go through with a BT connection, but I'm curious if there is any similar agreement that occurs if the Android device agrees to stream digital audio data to a device that will be receiving it.
2b) I'm asking 2a because I know car stereos are outfitted with an internal DAC, but testing a phone with a couple car stereos in a store seemed to automatically trigger MTP or not recognize the device. So does a DAC passively accept the digital data coming into it and process it, or is there some agreement that has to take place when digital data is getting fed into it? Does a car stereo intercept the connection and not send the data off to the internal DAC?
3) This is lower priority... But I'm curious if anyone has connected their Android device to an external DAC and then connected that DAC to their car stereo? Did this give you better sound quality than a BT connection? These are the two reasonable fallbacks if I can't get a straight answer regarding USB audio out with a streaming service on Android.
Hope to get some responses and try to be gentle! :laugh:
When i connect my portable DAC amp to the headunit usb port , it isn't found by the android system as my andriod phone&tablet.
But when i use the "usb audio player" app to play music , i can hear the sound from the amp.
I think it is a problem on the headunit's OS.
Anyone know how to fix it ? my headunit is FYT7862 (general version)
Have you looked in developer options for the USB mode?
My unit never detects my iPhone when I plug it in (for CarPlay)
Greetings,
I would like to find out if/how I can get the digital sound out of the USB C port.
I want to use external DAC/amp to run in-ear headphones.
I went to the developers settings. The USB audio routing is enabled. I also switched USB default interface to MIDI.
The DAC/amp I am using is XtremePro, thumbdrive type USB/3.5mm device. The player is foobar2000 for android
Unfortunately, I get no audio out. Is the problem my DAC, needing drivers to install? Or is it the device itself? What can I do to get the digital audio out of the USB C?
Any suggestions are appreciated.
Thanks much