Database Users

[Q] Using Powered USB Speakers with Nook

Hi Everyone,
I appreciate the great work developers have been putting in exploring the hidden capabilities of Nook.
I am struggling with USB host now. Here is my situation:
I have a pair of Logitech USB speakers (Please google, Logitech audio Hub, since I am not allowed yet to post direct links).
These use external power and were originally being used with my notebook connecting via USB.
Now, since I do not use my laptop any more and use only NOOK, I am interested in using them with Nook.
I am currently running Nook with CM-7.1.0-RC1-encore. Is it possible to use these speakers? I read a thread about USB host and some people have mentioned using USB audio but I am not sure if they are using powered ones and I am concerned whether connecting a powered speaker may fry the USB port.
Any thoughts, experience, ideas would be appreciated.

Update to a recent nightly. There have been so many updates for USB there is no point in trying to troubleshoot the RC.

Sure, I will update to that. Any other directions to get the USB speakers working?

I read your post and decided to try it. I do not have the speakers you mentioned but do have a set of insignia usb powered speakers.
I turned on host mode and connected the speakers to the nook. Tried 3 different games and had the same results. The speakers will power up and receive a signal from the nook. They work for about 20-25 seconds then lose the signal from the nook . I have to reset host mode to reenable them.
At this time, I would recommend using powered speakers through the headphone jack or a headset. Not sure what's going on through host mode but it had me worried when I had to reset host mode 3 times.
I'll run a logcat to see what's going on in the system but it looks like a no-go for the present. I get excellent results from powered speakers through the headphone jack. Just a thought and I'll get back to you with the results of the logcat.
Sent from my NookColor using Tapatalk

Thanks a lot Moshe5368 for your response. The problem I have is that these speakers do not have 3.5 MM input and USB connection is the only possibility.
Though they are really nice speakers, I guess if this doesn't work then its time to just order another pair of speakers.
I have just ordered the USB converter today (from Micro USB to USB-F) and have not tried it with the speakers I own yet. Will test that and revert back on what I find.
BTW, the speakers I have are powered with regular power (USB connection is just for Audio signal). Do you suggest I try them? Any chance they could fry the Nook's USB port?

It is a possibility that that type speaker would work. My logcat showed (if I read it right) that since the speakers were drawing their power from the usb port (even through the usb powered hub) I exceeded the power available through the micro USB port on the nook.
I was not sure what to expect but thought that might be the case. I have a set of powered speakers from jwin that plug into the headphone jack and perform perfectly.
Let me know what your results are.
Sent from my NookColor using Tapatalk

Sure. I will keep you posted as soon my adapter arives.

[Q] Charge & AUX for Car

Does anyone know of a cable to do both charge and output audio to 3.5mm (AUX) using just a single USB connection? Trying to regain the ease of use of the dock connector on my old iPhone.
I found a Motorola cable that appears to be the right thing, but likely wouldn't be compatible with the Nexus 4:
Example: http://www.verizonwireless.com/b2c/...artItem&accessoryId=50288&cartIndexLocation=0
Closeup: http://www.motorola.com/us/consumer...e,en_US,pd.html?cgid=mobile-phone-accessories

"Buzzer" sound through headphones when using OTG pendrive

Hi all,
When i plug my headphones and my OTG cable + 32Gb pendrive, a noticiable "buzzer" sound is audible through the headphones.
It happens when I connect the OTG and when I click on any of the the folders, a small "bzzzz" does sound.
If I copy any file from the pendrive to the internal Nexus 7 storage, the sound is persistent until the file is copied.
If I play a video file from the OTG, a "bzzz" sounds every few seconds.
I don't appreciate it when doing the same without headphones.
Seems like the "bzzzz" sounds when the tablet reads from the OTG-connected device and it's only audible through headphones.
This doesn't happen if I browse / play files from the internal memory.
EDIT: I'm using Nexus Media Importer, stock, no root
What do you think? Could be a kind on interference, a defect of the OTG cable, or somewhat?

same here using meenova OTG reader.
With Meenova OTG reader I found that if I pull on the headphone jack towards the usb connector, noise gets less loud.

It may have something to do with the USB port not being shielded well, or something to that effect.
I noticed that if I'm charging the tablet and hook up my headphones to listen to music, I get a lot of "static" noises, which is probably your "buzzing" noise. If I unplug it from the usb cable, it stops. This happens with any cable I use, including the original USB cable and eletrical outlet adapter that came with the table.
It happens even if it's plugged into a computer USB port, so I think it has something to do with the USB port on the motherboard and how it's wired. Seems like any power drawn on the USB port creates the buzzing noise when listening with headphones. Doesn't appear to happen when there aren't any headphones plugged into the port. Might be some kind of interference between the USB and headphone ports.

On the N7 the USB port and the jack are on the same board and use the same ribbon cable so l would assume its something to do with the voltages used in USB otg and PC connections as the ribbon is not consistently shielded that's probably where you are getting interference
Edit yes @iBolski the internal speaker comes directly off the motherboard whereas the jack output is on a separate board shared with the USB port
Sent from my C5303 using xda app-developers app

Anyone knows if extra shielding can be added?

yurikus said:
Anyone knows if extra shielding can be added?
Click to expand...
Click to collapse
No you can't add more shielding. The problem is that the same ribbon carries bothe the power and the sound signals.
Sent from my C5303 using XDA Free mobile app

[Guide] How to enable USB audio on Nexus 5X

The Nexus 5X's USB Type-C port can both input and output audio, however mine needed some setting up before it would work.
I plugged in a Blue Yeti microphone into the Nexus 5X using both the USB Mini-B to USB Type A cable (comes with the Yeti), and the USB-A female to USB-C male adapter from Google. The Yeti powered on instantly, it's red light turned on, and I could hear myself through its no latency monitoring via headphones (Blue Yeti has a 3.5mm headphone output), however the 5X would not recognize the Yeti as either an audio input nor as an audio output device.
I went into Developer Options, scrolled down to "Select USB Configuration" and changed the radio button selection to "Audio Source". I scrolled down even farther to the Media section, and there I disabled "Disable USB Audio Routing" (you might say that I enabled USB audio routing). There was no immediate effect, so I unplugged the Yeti, plugged it back in, et voila! The phone recognized the Yeti as both a microphone AND an audio playback device simultaneously.
I don't know for sure which of those two settings truly made a difference, as now that I've got USB audio to work, neither of those settings seems to make a difference anymore -- it seems as though my Yeti is permanently approved for USB audio in my 5X!
The USB audio works for listening to Google Music, and even for regular voice phone calls.
Do you have a USB microhone/headset/headphones/DAC? Get a good USB-A female to USB-C male adapter and you'll be quite pleased! And hopefully you'll be luckier than I was and it'll just work when you plug it in, but if not then toggle those USB audio Developer Options as described above.

Finally someone has posted on audio out and in via USB c! Thanks!

Just plugged the 5X into a Focusrite Scarlett 18i20. The phone recognizes the first two input channels and can record in mono or stereo (input 1 as left track and input 2 as right track).
Also it does seem as though you must keep the "Disable USB audio routing" off for it to work.

Sweet, guess I won't need the SoundAbout app anymore.

This is really nice. Able to route usb audio to a Cambridge Audio DacMagic. Much better than the on-board dac, and no longer tied to a specific app.

decided to add this on my index
[INDEX] LG NEXUS 5X Resources Compilation Roll-Up

Isn't this just a USB sound card over OTG? I plugged in a Logitech sound card with line out and mic in and it worked without any tweaks.

My 6th gen iPod nano plays usb audio perfectly fine on my crappy pioneer deh-3300ub headunit, but no matter what settings or cables I try the stereo says "N/A USB" with my N5X plugged in.

Anyone get the audio-in-via-usb to work with the built-in Google camera/camcorder app?
I am using Nexus 6P
The audio-in DOES work with this video app: https://goo.gl/Dtu14
But with the built-in camcorder, it only records audio from the phone's mic, not the usb mic.

mptpro said:
Anyone get the audio-in-via-usb to work with the built-in Google camera/camcorder app?
I am using Nexus 6P
The audio-in DOES work with this video app: https://goo.gl/Dtu14
But with the built-in camcorder, it only records audio from the phone's mic, not the usb mic.
Click to expand...
Click to collapse
I would think google designed it to only use built in microphone. It would take some mods or tinkering to get it to do otherwise.
---------- Post added at 11:25 PM ---------- Previous post was at 11:23 PM ----------
makogaleos said:
The Nexus 5X's USB Type-C port can both input and output audio, however mine needed some setting up before it would work.
I plugged in a Blue Yeti microphone into the Nexus 5X using both the USB Mini-B to USB Type A cable (comes with the Yeti), and the USB-A female to USB-C male adapter from Google. The Yeti powered on instantly, it's red light turned on, and I could hear myself through its no latency monitoring via headphones (Blue Yeti has a 3.5mm headphone output), however the 5X would not recognize the Yeti as either an audio input nor as an audio output device.
I went into Developer Options, scrolled down to "Select USB Configuration" and changed the radio button selection to "Audio Source". I scrolled down even farther to the Media section, and there I disabled "Disable USB Audio Routing" (you might say that I enabled USB audio routing). There was no immediate effect, so I unplugged the Yeti, plugged it back in, et voila! The phone recognized the Yeti as both a microphone AND an audio playback device simultaneously.
I don't know for sure which of those two settings truly made a difference, as now that I've got USB audio to work, neither of those settings seems to make a difference anymore -- it seems as though my Yeti is permanently approved for USB audio in my 5X!
The USB audio works for listening to Google Music, and even for regular voice phone calls.
Do you have a USB microhone/headset/headphones/DAC? Get a good USB-A female to USB-C male adapter and you'll be quite pleased! And hopefully you'll be luckier than I was and it'll just work when you plug it in, but if not then toggle those USB audio Developer Options as described above.
Click to expand...
Click to collapse
Can you test and report which apps can record audio with the blue yeti? free and/or paid, if you have the time to test of course.

hi! I buy one of this adapter usb-c to 3.5 jack, beacuse my 3.5 jack has broken. I dont find how enable the output audio to work with my headphones. someone can help me? thanks!

chavook said:
hi! I buy one of this adapter usb-c to 3.5 jack, beacuse my 3.5 jack has broken. I dont find how enable the output audio to work with my headphones. someone can help me? thanks!
Click to expand...
Click to collapse
That's because you most likely did just get a basic 3.5mm to USB-C adapter with no active circuit. I'm fairly certain that Nexus 5X do not support analog passthrough over USB-C, which means you will need something with active circuitry.
Sent from my Le X829 using Tapatalk

chavook said:
hi! I buy one of this adapter usb-c to 3.5 jack, beacuse my 3.5 jack has broken. I dont find how enable the output audio to work with my headphones. someone can help me? thanks!
Click to expand...
Click to collapse
GethPrime said:
That's because you most likely did just get a basic 3.5mm to USB-C adapter with no active circuit. I'm fairly certain that Nexus 5X do not support analog passthrough over USB-C, which means you will need something with active circuitry.
Sent from my Le X829 using Tapatalk
Click to expand...
Click to collapse
You need a portable DAC (get a cheap one like Fiio A1 for 25usd). Nexus 5X USB-C is not USB3/3.1 interface, so it won't work.

3.5mm audio jack with low quality

Hello,
I have to make a streaming setup using my redmi note 7. I can mirror the screen with a software and the sound with the 3.5mm jack. I connect the phone to the "line in" jack on the computer (the blue one) an it works, i can ear the audio from the phone on pc. But when i connect the phone to pc via usb for mirroring screen, the sound becomes crappy and i hear a low background sound like a whistle. The same happens if i connect the phone to charging in power supply. If a try to move a bit the usb plugged, i hear the "distortion".
With my Samsung Galaxy s6 this doesn't happen.
How can i solve?