Couple of audio issues - BT and the adaptor - HTC U11 Questions & Answers

I just got the phone yesterday and am loving it so far, but I did have a couple audio related issues:
1. I was listening to some audio playback with BT headset and browsing at the same time, once in a while there is a high pitch noise, very annoying... Not sure if it's something to do with the websites I am browsing or what, but never happened on another phone...
2. Using the USB-C to 3.5mm audio adapter, the audio stops coming out from the headphones after a couple mins. It's as if it's disconnected. When I touched the adapter it is hot! How come?

namartlu said:
I just got the phone yesterday and am loving it so far, but I did have a couple audio related issues:
1. I was listening to some audio playback with BT headset and browsing at the same time, once in a while there is a high pitch noise, very annoying... Not sure if it's something to do with the websites I am browsing or what, but never happened on another phone...
2. Using the USB-C to 3.5mm audio adapter, the audio stops coming out from the headphones after a couple mins. It's as if it's disconnected. When I touched the adapter it is hot! How come?
Click to expand...
Click to collapse
Don't have the bluetooth issue but the adapter sounds faulty if its hot. I'd contact HTC

I tried the adapter from the other U11 and doesn't have the problem! I think the first one is defective!
And the BT issue seems gone, don't know what's wrong before... well, I'm happy.

High pitch noise
namartlu said:
I just got the phone yesterday and am loving it so far, but I did have a couple audio related issues:
1. I was listening to some audio playback with BT headset and browsing at the same time, once in a while there is a high pitch noise, very annoying... Not sure if it's something to do with the websites I am browsing or what, but never happened on another phone...
2. Using the USB-C to 3.5mm audio adapter, the audio stops coming out from the headphones after a couple mins. It's as if it's disconnected. When I touched the adapter it is hot! How come?
Click to expand...
Click to collapse
I got that high pitch noise a couple of times on two different HTC U11 phones. It happened both times when I was using Chrome on a particular web page. I closed the page and it never happened again on my first phone. I exchanged that one due to a minor display defect and same thing happened on my second phone. On both phones it happened early on once I had everything setup and never happened again. Must be some weird software glitch. At first I was worried that there was a hardware issue. Hope yours doesn't come back either!

Related

[Q] Issue with headphone functionality

I've searched everywhere for some answers to this and haven't had any luck.
I received my Nexus S 4G on Monday and have generally enjoyed the phone aside from the signal issues that have been addressed at Sprint's forums. I've recently discovered an issue with my headphone jack, though. Sound will only come out of my headphones when I am using the music player or music-related apps (Pandora for streaming). However, when I play videos from YouTube or the recently released Netflix app the sound is routed to my phone's speakers instead of the headphones that are plugged into the phone.
I've tried 2 different headphones and I can confirm both work when connected to my iPod and PC so I know it's not the headphones.
Any possible solutions? Should I get the phone replaced?
I had this problem with a specific pair of headphones. solution: make sure the headphones are in all the way. Seriously for some reason that pair have a second stage of "in" so they were not actually plugged in when i thought they were.
themapleboy said:
I had this problem with a specific pair of headphones. solution: make sure the headphones are in all the way. Seriously for some reason that pair have a second stage of "in" so they were not actually plugged in when i thought they were.
Click to expand...
Click to collapse
Seriously? I should've known I was doing something wrong. Both sets I tried have that same thing with the second stage of "in" or whatever it is. Anyway, that totally did the trick. Thank you so much!
I feel embarrassed

[HARDWARE PROBLEM] Headphone jack static/hiss noise?

Hey guys,
I bought a One X recently, and I am noticing some static/hiss/noise coming from the headphones.
I tried connecting my One X to bigger speakers, and the noise is more noticeable this way. This is an odd issue, because none of my other phones behave this way.
The funny thing is, if you play music or notification noises play when the phone is connected to speakers, the noise goes away. But after one second, when the DAC shuts off, the noise comes back again.
My friend's One X has this problem as well, so I don't think I just have a lemon here.
Other forums seem to be talking about this issue as well
http://www.htconeforum.com/forum/htc-one-x-help/300-htc-one-x-sound-issues-headphones.html
http://www.htconeforum.com/forum/htc-one-x-help/327-sound-issue.html
I found one review that mentions this issue. They talk about it in the Beats Audio section, and there's a video with the noise.
http://www.tekgadg.com/home/2012/6/15/htc-one-x-rogers-review.html
I remember using a really cheap chinese knockoff mp3 player about 8 years ago, and the One X seems to have the same problem as that mp3 player. Could it be that the One X has a cheap DAC in it that causes this noise?
Anyone else experience this problem?
The first link is about the international version, the lte one x is technically the One XL, and this is the first time hearing about this. Mine doesn't have a problem and I listen to music all the time.
Just and idea possibly cheap headphones?
Sent from my HTC One X using Tapatalk 2
My music is crystal clear, probably one of the best quality sound outputs I've heard from a phone actually.
Mine has this problem, but I only notice when I hook it up to my car speakers (with an aux cable) and not with headphones (Bose). It's a lot more pronounced when the phone is plugged into usb as well. Once sound plays though, the hissing stops completely. It's only when there is no output that the hiss is present.
Edit: Could it possibly be interference from the cellular radio? Maybe once the DAC kicks in it filters out the interference?
Edit 2: Just read the 3rd link and yeah, my speculation seems to have some validity
"Adding insult to injury, HTC One X features a badly shielded headset jack that makes noise whenever it is hooked up to sensitive speakers. We compared it to high-end and low-end phones, and none of them made the annoying static noise that the One X makes. This isn't a serious problem for people who only listen to music through headphones, but you may want to stay away from the One X if you are thinking about playing music through it with big speakers."
I had the same problem. If you are rooted, disable beats audio notify with titanium backup. I did this and use power amp with custom eq settings and do not notice any hiss whatsoever.
Sent from my HTC One XL using XDA
Same problem here. WAY worse when plugged in and in my car. On regular headphones no problem. In my car it's huge. To me it reeked of a poor ground somewhere, to the point that I thought my unit was defective. If it were a shielding problem I would think it would be an issue all of the time, not just when the thing is "inactive" (ie not driving the jack). I've "disabled" beats to the extent that I can without rooting, and it had no noticeable difference.
Glad to hear it's not just me.
I notice the problem when I use both the microUSB charger and headphone jacket. Disconnect the charger cable usually solves my problem. Now, I switched to use BT car adapter instead of aux cable and I can use car charger without noise.
The problem is called BEATS AUDIO!
scroll to the bottom
http://www.gsmarena.com/htc_one_x-review-747p5.php
designgears said:
The problem is called BEATS AUDIO!
scroll to the bottom
http://www.gsmarena.com/htc_one_x-review-747p5.php
Click to expand...
Click to collapse
I still get the hiss despite disabling Beats (as in just turning it off in the notification shade), although it is definitely not as bad as having Beats turned on. I'll freeze HTCBeatsNotify and see if it helps on the way to work tomorrow morning.
stnguyen09 said:
I still get the hiss despite disabling Beats (as in just turning it off in the notification shade), although it is definitely not as bad as having Beats turned on. I'll freeze HTCBeatsNotify and see if it helps on the way to work tomorrow morning.
Click to expand...
Click to collapse
Sadly beats audio is integrated beyond what you can turn off in settings.
so, the only solution is to root the phone and completely kill Beats Audio?
I guess it's not a hardware problem then... Man, that sucks. Has this issue been brought to light by some big sites yet? We need to do something so HTC learns from this mistake.
By the way, here's the update I promised...
Like I said before, I disabled beats from the notification pulldown but the hiss was still there, although slightly less annoying. I froze HTCBeatsNotify (or whatever the actual name is) using TiBu so Beats doesn't even show up when I plug it in. Unfortunately, the hiss is still there at the same level it was at when I just disabled Beats from the notification pulldown.
Is Beats actually integrated into the hardware? Is the "poorly shielded headphone jack" mentioned in one of the OP's links still a valid assumption? Can someone running CM9/AOKP chime in on whether they get the hiss?
Edit: Before I head home today I'll go into Airplane mode to try to rule out the headset jack shielding.
Annnnd of course my experiment failed...hiss is still there
If the headphone jack is indeed poorly shielded, couldn't it pick up interference from anything? Not just the internal radios?
This means we'll have to go into some radio-free environment in order to determine whether it's the headphone jack or Beats Audio that causes this annoying hiss.
In either case, I'm disappointed in HTC.
ai4281 said:
If the headphone jack is indeed poorly shielded, couldn't it pick up interference from anything? Not just the internal radios?
This means we'll have to go into some radio-free environment in order to determine whether it's the headphone jack or Beats Audio that causes this annoying hiss.
In either case, I'm disappointed in HTC.
Click to expand...
Click to collapse
Well I mean, the internal radio would be the strongest signal in the immediate area that would cause interference. Just look at old, poorly shielded computer speakers, they had issues only when a phone would go off within maybe a yard of them. I was in a parking garage at the time I tested and I'm not sure if there was anything else around that would be powerful enough to cause the interference.
Also something I noticed which may lend credence to the DAC being the source of the issue...Just plugging my phone into usb and having the headphone jack attached does not produce as much interference as when I'm streaming from Google Music and it gets caught buffering. As in, when the DAC would still be active but no audio is output. The hiss during that situation is quite a bit worse than just having the phone sit there not doing anything.
Since Beats is just a glorified equalizer, it could be that Beats just happens to be boosting the sound frequencies of the hiss and making it sound louder, and not the actual source of the hiss itself. So maybe it is a hardware issue.
Again, I can't imagine ti being "poor shielding" because that would not immediately go away once you started playing music. Think about typical cell phone interference from a radio. You're playing music, and you hear that "bvvvvrerrerrr" sound.
In the case of the HTC, as soon as you start playing music, the hum goes away IMMEDIATELY and completely as far as I can tell. If shielding were the problem it wouldn't it still be distorted regardless of whether the jack was actively playing anything or not?
Seems more to me that the DAC is leaving some signals floating, leaving them susceptible to noise, when it's not active, when it should be pulling them to a known state (probably ground)
Not from DAC either. If you plug in a headphone, you will not hear these noises. It seems only occur when you plug into AUX import of car or amps.
So, it is a hardware design problem that causes dirty interference escaped into audio output. When you plug in a normal headphone, it has very low impendence and the noise will not get amplifed at all. If you plug it into an AUX import, it will have a much higher impendence and hence the noise get carrier over and amplified.
foxbat121 said:
Not from DAC either. If you plug in a headphone, you will not hear these noises. It seems only occur when you plug into AUX import of car or amps.
So, it is a hardware design problem that causes dirty interference escaped into audio output. When you plug in a normal headphone, it has very low impendence and the noise will not get amplifed at all. If you plug it into an AUX import, it will have a much higher impendence and hence the noise get carrier over and amplified.
Click to expand...
Click to collapse
Your explanation makes perfect sense. This seems to be the issue.
foxbat121 said:
Not from DAC either. If you plug in a headphone, you will not hear these noises. It seems only occur when you plug into AUX import of car or amps.
So, it is a hardware design problem that causes dirty interference escaped into audio output. When you plug in a normal headphone, it has very low impendence and the noise will not get amplifed at all. If you plug it into an AUX import, it will have a much higher impendence and hence the noise get carrier over and amplified.
Click to expand...
Click to collapse
ai4281 said:
Your explanation makes perfect sense. This seems to be the issue.
Click to expand...
Click to collapse
I think we have a winner!

Headphone jack buzz

hey guys,
my One S has buzzing noise coming from the headphone jack, and this problem is pretty annoying especially when it's connected to my car stereo. I thought it might be just mine, but it seems like this is a common issue.
i found this video on youtube. I have the exact same buzz from my One S, though perhaps not as accentuated as in this video.
seems like the One X has this problem as well. found this thread at the One X board http://forum.xda-developers.com/showthread.php?t=1720212
is this a grounding problem in the headphone jack? Beats Audio? what do you guys think?
I've always had this problem with more than one phone. If you charge the phone via USB adapter from the car battery, it gets 10x worse.
This problem only happens when sound is being played back, so when music/video/game sound kick in, it stops. Do you get that noise when sound is being played back?
Bernardos70 said:
I've always had this problem with more than one phone. If you charge the phone via USB adapter from the car battery, it gets 10x worse.
This problem only happens when sound is being played back, so when music/video/game sound kick in, it stops. Do you get that noise when sound is being played back?
Click to expand...
Click to collapse
The buzz is only audible when nothing is playing. Like in that video, when I stop playing music it will be silent for about 2 seconds and then the buzz kicks in again.
I didn't have this issue with other phones
I don't have any buzz, I double checked just to make sure.
Although it might be my headphones, the output is probably not strong enough to play the sound.
It's probably being heard in your car (or in the youtube video) because the output is being amplified.
I'm having the same issue with YouTube and Pandora.
xxquicksh0txx said:
It's probably being heard in your car (or in the youtube video) because the output is being amplified.
Click to expand...
Click to collapse
you're right. the issue isn't as noticeable through earbuds. i think that's why many people are saying they don't have this issue. It's still bad though.
I don't know why HTC messed up this part when no other phones seem to have this issue. Makes me sad.
If it's easy to reproduce for you guys, I'd definitely be pushing for warranty replacement.
I do not have this problem at all. On my cheap pair of headphones or on my expensive one. No hum or sound.
the buzz is there, and it also was on my Desire.
Not when playing tho, only when connected and not playing. Not too annoying, always thought it was supposed to be like that.
And no, I have never heard it through ear buds or phones, only when connected to home stereo or car stereo, and if charged through cig-lighter-outlet it amplifies further...
Closed Source Project said:
I do not have this problem at all. On my cheap pair of headphones or on my expensive one. No hum or sound.
Click to expand...
Click to collapse
It doesnt effect headphones, only when the sound is amplified. Like when you play music in your car.
Simply because that sound alone is not enough to drive the headphones.
Sent from my HTC VLE_U using xda premium
Whether its plugged in to a car or home stereo, its still using the output from the headphone jack. The power output from the jack is the same either way.
I plug mine in to the aux jack of my car stereo daily, and I have no buzz or hum. Do you have your phone plugged in to a power source at the same time? That buzz is usually caused by crosstalk from a poor quality power source.
Or, as I said earlier, it may just be a bad phone.
ptweasel said:
Whether its plugged in to a car or home stereo, its still using the output from the headphone jack. The power output from the jack is the same either way.
I plug mine in to the aux jack of my car stereo daily, and I have no buzz or hum. Do you have your phone plugged in to a power source at the same time? That buzz is usually caused by crosstalk from a poor quality power source.
Or, as I said earlier, it may just be a bad phone.
Click to expand...
Click to collapse
Well my phone doesnt do it in my headphones. I can't test in car, no aux input.
What I was saying is that, of its buzzing in your car but not on your headphones its because the sound level at which the buzz is at isn't enough to drive your ear buds. But when the car stereo amplifies it its easily driving your car speakers.
Sent from my HTC VLE_U using xda premium

White Noise and Clicks on Headphones

Hey Guys,
I already read about the click sounds on earpiece but I have another problem.
I connect my QC25 headphones via the USBC to Audio jack Dongle but as soon as music is playing for 10-15 seconds I get quite loud white noise. When I pause the music it will stop eventually after 10 seconds.
If I increase volume the white noise also stops. Sometimes comes back with some clicking noise.
Anyone else has this? Pixel 2 seems to have many problems. Very poor quality for this high price.
Might the problem come from the adapter you're using? The audio coming from the pixel itself is digital and that should be free of white noise. I'm pretty amazed by the quality of sound coming from this little adapter and have not had the symptoms you described. Sorry to hear this.
mhoppi said:
Hey Guys,
I already read about the click sounds on earpiece but I have another problem.
I connect my QC25 headphones via the USBC to Audio jack Dongle but as soon as music is playing for 10-15 seconds I get quite loud white noise. When I pause the music it will stop eventually after 10 seconds.
If I increase volume the white noise also stops. Sometimes comes back with some clicking noise.
Anyone else has this? Pixel 2 seems to have many problems. Very poor quality for this high price.
Click to expand...
Click to collapse
I have exactly the same headphones and issues you have. Did you find any solution for it? RMA the USB-C dongle?

Audio output static noise with adapter

Hi everyone, I got my new mix 2s this week and I am sad to say it has audio problems when using the included usb-C Jack adapter.
My car is equipped with a sony stereo with a front facing AUX in, a cdx-gt33u. So, as soon as i plug the phone in the aux in, there's a hiss, a loud white noise. After some seconds that the screen is locked or the phone isn't sending any audio the noise stops. When I play music the noise starts again and covers the music as it is louder.
I tried every cable I had, even in a friend's car with a similar stereo unit and the problem is the same. With a TRRS cable (one with also the microphone's ring) there are also clicks and pops.
I would like to keep this phone as I really like it (and I can't find any good alternative for about 500€) but I found no fix. I'm considering returning the device as I work with audio professionally and not being able to play music in my car is just ridiculous.
What's your experience? Did I get a broken device or is it a software issue?
MIUI version is MIUI Global 9.5 Stable (9.5.19.0 (ODGMIFA)
EDIT: I considered installing another rom or rooting to apply the "<ctl name="RX HPH Mode" value="CLS_H_HIFI" /> Replace CLS_H_HIFI with CLS_H_LP"" fix, but I bought the phone less than a week ago and rooting it just to listen music doesn't seem reasonable to me.
It's working just fine in my cars audio in... However, the LG G6 my girlfriend owns has the same problem with my car that you just described
I don't experience any audio problems when using the USB Audio Adaptor with wired headphones. Car audio systems sometimes have issues though when you hook up a phone with a wired sound connection. I think a grounding issue creates the noise.
jhs39 said:
I think a grounding issue creates the noise.
Click to expand...
Click to collapse
You are totally right. Yesterday I bought a ground loop isolator and the problem is gone.
I also got a small bluetooth receiver to put into my stereo aux in. Quality is worse but at least I can just leave it in the car without having to worry about adapters! (now I have to worry about its battery though)
This jack-less technology is leading us in a really uncomfortable direction but I guess we have to live with it.
yophio said:
You are totally right. Yesterday I bought a ground loop isolator and the problem is gone.
I also got a small bluetooth receiver to put into my stereo aux in. Quality is worse but at least I can just leave it in the car without having to worry about adapters! (now I have to worry about its battery though)
This jack-less technology is leading us in a really uncomfortable direction but I guess we have to live with it.
Click to expand...
Click to collapse
I agree unfortunately. Phone device manufacturers and headphone makers seem to have decided that we're going to have to use Bluetooth whether we want to or not.
---------- Post added at 07:07 PM ---------- Previous post was at 07:04 PM ----------
yophio said:
You are totally right. Yesterday I bought a ground loop isolator and the problem is gone.
I also got a small bluetooth receiver to put into my stereo aux in. Quality is worse but at least I can just leave it in the car without having to worry about adapters! (now I have to worry about its battery though)
This jack-less technology is leading us in a really uncomfortable direction but I guess we have to live with it.
Click to expand...
Click to collapse
You could leave the adapter in your glove compartment in case the battery runs down on your Bluetooth receiver.
Ive got a bluetooth receiver in my glove box powered by usb from my head unit so it turns on/off with the stereo. Its arguable that audio is worse using bt if you have aptx codec or even better aptx-hd which is virtually lossless. Using the dac in the phone could induce more noise because if the space constraints in a phone and proximity or rf components. Having a good quality Bluetooth receiver with a quality dac could be better. Best of all is a usb dac though.

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