I have tried every search term I can come up with and short of going through every post in the Q/A on the Note 3 I can't find a definitive answer on this one.
I have noticed many other devices have the same or similar problems
I am trying to use my device to play to a car radio via an Aux cable, without much luck. It has a constant humming in the background, I have tried it with a few cables and a FM Transmitter and get the same results.
No issues with headphones at all
Humming only when it is plugged into the charger, very quiet (Nearly silent) if not plugged into the charger
Tried many different combinations of cables and chargers
Is there an easy fix?
One alternative I am looking for an A2DP - FM Transmitter but it has to be USB powered as I have a 5 port charger in the car, all the ones I have seen is powered direct from the power socket. I have used A2DP direct to another car radio and it works clear as day which is why I am exploring this option, as well as the ability to skip tracks from the remote control.
I use my Sony Bluetooth handsfree for that. It works like a dream. The only issue is charging: older models can't connect to phone while charging. You should check this before you buy your BT handsfree.
Sent from my SM-N9005 using Tapatalk
trubster said:
It has a constant humming in the background, I have tried it with a few cables and a FM Transmitter and get the same results
Humming only when it is plugged into the charger, very quiet (Nearly silent) if not plugged into the charger.
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Click to collapse
Do you hear that humming when phone is plugged to charger, but engine is not running?
Does the humming change voice or get louder with higher RPM? This is pretty normal on cars that phones keep noise when playing music through AUX while charging.
So most probably your car alternator causes this. One possible way _might_ be to ground your cigarette lighter 12V(?) output from car straight to battery or/and put something between + cable that gives 12.0V to your phone charger, no more no less, since every car I have had the voltage on cigarette lighter depends on RPM. While engine off it gives what battery has (~12V) and when engine running on high RPM ~14.5V
One more way would be grounding your phone to your car, but that might be a bit hard, and I don't know would it do something bad to phone either lol
Hope this helps.
I remember a similar issue occurring a long time ago. Had to do with the screen brightness being turned down.
Does the problem also occur if you set the brightness to 100%?
Sent from my SM-N9005 using Tapatalk 2
Related
Hi All.
I'm using my TYTN II to listen to radio when I have a long drive. The TYTN II is connect using a FM radio transmitter, with the USB converter.
The problem: When using the Internet, then battery drain is quite fast, especially if you are on the move and the radio signal is not that strong. I tried few USB chargers, and all of them have a DC ripple that effects that sound. When I don't use any charger, the sound on the radio is great, but when I connect the charger then I hear the noise of the alternator.
partial solution: I have opened one of the chargers and installed a 22uH Inductor in series to the power. I have also increased the Cap. from 470uF to 100ouF. This helped but not the desired requirements.
Any one solved this problem? I will be glad to hear nay inputs or ideas on how to solve this.
Thanks.
I had the same problem and installed a ground loop isolator to solve my noise issue. It is installed between the usb adaptor and fm mod to eliminate the noise when charging.
http://www.scosche.com/products/productID/1097
Hope that helps.
Hi Weav2k4.
From your answer I Google it and I found this article:
http://www.tkk.fi/Misc/Electronics/circuits/audio_isolator.html
From there I found an alternative transformer and I have order couple of samples. When I will get them, I will build this and will let you know if it worked...
Thanks.
Ground loop isolator is what you need. Radioshack has one that's decent too. Scosche is good but the build quality can be (not sure about the isolator) a tad flimsy; I had a line out converter from them which worked great but had to be taped together. anyway, about the isolator: they actually decrease sound quality to some extent - but given that you're not using a high end system, there's no way you'll notice a degradation; only an improvement as the alternator whine goes away!
Solution
Hi.
I have finally built the isolator using the transformer that I got. If I use speakers or BT connection I get almost 100% of clear signal, NO alternator noise!!!
When I use my FM transmitter, I get about 90% - 95% of clear noise. That is probably because of the pickup from the FM transmitter. Never the less, the noise is only apparent when I turn the volume in the car high, and I'm not playing anything on my Kaiser. When I play musing or anything else, you don't here that noise at all the the quality is sufficient for Internet radio.
So what did I do and use?
2 x Transformers: http://www.componentsuperstore.com/Store/ProductDetails.aspx?ProductIdentifier=82096ULF3WEMIDCOM5872510
Connection: See bellow picture.
Good luck to you all.
@gidim:
Glad to see you were successful! Nice job on the schematic and information for future DIY'ers out there.
PAC SNI-1/3.5 Noise Filter at Crutchfield for auxiliary stereo input
gidim said:
Hi All.
I'm using my TYTN II to listen to radio when I have a long drive. The TYTN II is connect using a FM radio transmitter, with the USB converter.
The problem: When using the Internet, then battery drain is quite fast, especially if you are on the move and the radio signal is not that strong. I tried few USB chargers, and all of them have a DC ripple that effects that sound. When I don't use any charger, the sound on the radio is great, but when I connect the charger then I hear the noise of the alternator.
partial solution: I have opened one of the chargers and installed a 22uH Inductor in series to the power. I have also increased the Cap. from 470uF to 100ouF. This helped but not the desired requirements.
Any one solved this problem? I will be glad to hear nay inputs or ideas on how to solve this.
Thanks.
Click to expand...
Click to collapse
weav2k4 said:
I had the same problem and installed a ground loop isolator to solve my noise issue. It is installed between the usb adaptor and fm mod to eliminate the noise when charging.
http://www.scosche.com/products/productID/1097
Hope that helps.
Click to expand...
Click to collapse
Great question and solution!
I use an auxiliary input jack on my Eclipse, and had the same issue when trying to use charger with my Zune or my Samsung Helix XM. With the information you two provided, I searched for a solution that would work with 3.5 jack and not require splicing or soldering, and found this PAC SNI-1/3.5 Noise Filter at Crutchfield. I have just ordered it - hope it works well - will report back.
I built a little box with a Meanwell DKE-series DC-DC converter that goes in the glove box. 12V in, + / - 5V out, isolated from ground and no ignition noise in the 5V signal. I put it in a little plastic box with a USB A female jack. They're a little bit expensive but I had some lying around from an old project.
I have my Tilt mounted in a car cradle with a 2-in-1 USB / audio y-cable. Works great for me with no noise when charging.
Have you tried to first check to see if your GROUND is clean?
On my 2007 G35 2nd gen sedan, i use the radio hoooked up to the factory audio/video inputs and i get all sorts of noise.
I know for a FACT the cigerette lighter socket on my car has a very DIRTY ground which is the cause for all the noise.
I also have 0 gauge wire to the trunk for my subwoofer amps, and there is no noise back there when tapping those lines (which go direct ot hte battery).
I realize this thread is referring to the "alternator whine" which I get when charging, but that's not my biggest issue, I constantly get interference from the phone radio itself, you know the sound you get when a phone gets near amplified speakers with poor shielding. Is there a similar solution to get rid of this noise? I have a ground loop isolator to hook up already, just haven't got around to it, but I doubt it will take care of the other interference.
rcm_rx7 said:
I constantly get interference from the phone radio itself, you know the sound you get when a phone gets near amplified speakers with poor shielding. Is there a similar solution to get rid of this noise?
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Click to collapse
That kind of noise is radiated over the air, not conducted through wires, so unless you start putting RF shields around your audio equipment you won't likely get rid of it.
Ok guys my headphones (Meelec M9P) make static when I plug them into my phone. It's starting to get really annoying. When I plug it in I hear static that gets worse when I touch the screen, but it reduces drastically when music or sound gets puts through it. My Jetblue $2 airline headphones (no mic) don't do this...
This happened on all roms, but I'm running the zomg not my dog build of Froyo.
The reason one pair of headphones does it while the other is because the one that does hear static has a lower impedence than the one that does hear static.
But the explanation behind it getting worse when you touch the screen is similar to the what sometimes happens on old PCs with cheap integrated sound. Sometimes you can hear static, and hear more when moving your mouse or when your CPU load is high. It's caused by something like signal interference within the hardware, and there's nothing that can be done... which is probably what's happening to you.
I'm using Head-Direct RE2 earphones, but the impedence is high enough that I don't hear static.
Sorry, but I think there is nothing you can do to remedy the static =/
Just did a quick search: indeed, your impedence = 16 Ohms (source), mine = 32 Ohms
This happens to me too, its really annoying and makes the phone feel like a piece of $hit!!!!
Well actually you could use a mini headphone amp like this one I have and like
Fiio E5
and it would probably solve your problem since it will be between your headphones and the phone
But don't you think it's stupid that we would need something like that?
I only have that problem when I'm plugged into the car charger. DC vs AC I guess.
bcarter2000 said:
I only have that problem when I'm plugged into the car charger. DC vs AC I guess.
Click to expand...
Click to collapse
actually AC is noisier. it has a sine wave, DC does not. your wall charger still spits out the same DC as the car charger, it just rectifies the ac to dc before stepping the voltage down. Car charger is all dc so its just stepping the voltage down from 12v to 5v. car charger probably has a weaker ground. Most car chargers I've seen are poorly built...
i thought that was normal
i got some sony MDR-V150's and i get that **** too yes i know they're old! so dont say anythin bout that
its not very loud but since i got good hearing plus the fact its right on my ears i can hear it when nothin is playin or when i touch the screen
Question for you guys: why do you put headphones on when music is not playing
c00ller said:
Question for you guys: why do you put headphones on when music is not playing
Click to expand...
Click to collapse
I'm using M9P's, and they use a mic so I can take calls with them also, and I love using voice command with them .
Ahhhh the impedence problems seems right, but I wonder what the impedence on crappy airplane (Jetblue) headphones are then? I think it might have something to do with the mic, but there were ways that would slow it down. I could "turn" on the headphones without plugging it in through an app called toggle headset. It removed a lot of static, but sometimes it didn't work...
All of meelecs phones' are 16impednece, which makes me believe that when I get my m11+'s they'll have the same prob
No headphone pop or capacitive screen static
The static with touch screen issue has been addressed. It was a problem with any OC Kernel, but it has been fixed with the latest kernels Darch has been putting out.
CyanogenMod RC1
Hi guys just curious if any of you get any squeel when using you g2 with headphones or aux when nothing is playing. Mine makes the noise but as soon as music starts it's gone. Not sure if it's my cable or car.. i don't think my Legend did this.
Sent from my HTC Vision using XDA App
Never had it happen to me...
it might be engine noise. i used to have that issue a lot with other devices (my TP2 and sirius sat radio). do you have the charger plugged in when you use it
I get a bunch of annoying noise when playing music through my car speakers, but only if the phone is plugged into the charger at the same time. Not sure why. As soon as I unplug the charger the noise goes away.
thats the dredded engine noise what happens is that it picks up the noise from the battery. the only way to get rid of it is to get a filter to the aux cord. my bro hooks up systems in ppls car and it always happens when you connect it to the car battery.
+1 I got similar filter like this in my car.http://cgi.ebay.com/3-5mm-FILTER-CO...er_MP3_Player_Accessories&hash=item5d273d8ff9
Just a question, are any of you guys attaching a car charger to the phone while playing the music in the car?
Aside from zielin.
i get some feedback noise when no music is playing but when playing, there is no issue. when i stop playback, it takes a couple seconds then the noise starts. ive always had a charger plugged in too. never tried without the charger.
Turbo Brian said:
i get some feedback noise when no music is playing but when playing, there is no issue. when i stop playback, it takes a couple seconds then the noise starts. ive always had a charger plugged in too. never tried without the charger.
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Click to collapse
that is the issue when you have the phone plugged into power read the post
ilikepu said:
thats the dredded engine noise what happens is that it picks up the noise from the battery. the only way to get rid of it is to get a filter to the aux cord. my bro hooks up systems in ppls car and it always happens when you connect it to the car battery.
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Click to collapse
Interesting.. i didn't get the noise today but i didnt have the charger plugged in. Normally i do. Will check into this tomorrow.. thanks.
Sent from my HTC Vision using XDA App
I get this same thing. I've never had this problem before with my G1, MyTouch Slide, Vibrant or Nexus One. It's gotta be something with the G2.
rewen said:
Hi guys just curious if any of you get any squeel when using you g2 with headphones or aux when nothing is playing. Mine makes the noise but as soon as music starts it's gone. Not sure if it's my cable or car.. i don't think my Legend did this.
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
I do. I had bought a gold-plated male x male 3.5mm jack cord from Radio Shack. When nothing is playing, I get that noise.
SoTacMatt
I am bad at updating threads..
The noise was indeed caused by my alternator and only happens when the phone is plugged into the charger. The reason I never noticed it with my HTC Legend was because I used a USB cable to my car's AUX for charging. However that cable got wet and corroded so I have been using a cigarette lighter charger (igo) since then.
I installed a Parrot MKi9100 into my car and I also get the very same noise through it while navigating menus, etc. Speaking of the MKi9100, never buy one if you intend to use it for music. Parrot has messed up all their firmware and the thing is a huge waste of money if you want to bluetooth steam audio or use an ipod/iphone. It freezes all the time and no matter the source device or input, pausing and then playing again disconnects the device. It's great :S Oh and their own forums are riddled with people complaining (literally swearing and insulting the company) but Parrot seem to have NO IDEA as they don't read their own forum. They also don't reply to tech support emails sent through their own website.
yea bro i told you ya earlier it was engine noise
On my phone you can hear clicking/popping when the sound sources switch around, but I don't think that's a defect in the phone.
This thread makes me chuckle though, I have a cig lighter charger for my ipod and that never caused any weird interference issues, maybe monster shoved a filter in it? (ya.. monster.. hurray for finding it on 90% clearance at target? XD)
OoTLink said:
On my phone you can hear clicking/popping when the sound sources switch around, but I don't think that's a defect in the phone.
This thread makes me chuckle though, I have a cig lighter charger for my ipod and that never caused any weird interference issues, maybe monster shoved a filter in it? (ya.. monster.. hurray for finding it on 90% clearance at target? XD)
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Click to collapse
i couldnt say why that happened then again i dont own an ipod. but in any car that me and my bro setup any systems in we always encountered that issue if we dont put a filter in it
I use my phone as an audio player quite a bit, but I've recently noticed and issue and I was wondering if anyone else had similar problems or perhaps even overcome them. When I have my Vibrant plugged in to a power source and I plug in my headphones everything sounds fine, but if I'm plugged in to power and connect a line out cable (e.g. a male to male cable for connecting to a car stereo) I get a really nasty hiss as well as other audio artifacts. I have tried numerous combinations of different power and audio cables, headphones, and audio sinks (car stereo, home stereo, computer audio in, etc.), but the result is always consistent.
Power + AUX cable = bad audio
Power + Headphones = Good audio
AUX Cable - Power = Good Audio
Has anyone else seen/solved this with their phones?
I assume you are talking about car charger and aux out and the noise that increases as your speed increases. If that's what you are talking about I get it to. Something needs to be grounded. Exactly what I don't know. I would ask a car audio person. If I'm not mistaken all radio components ie. radio amp are grounded that's why you don't hear it. Let me make this clear nothing is broken. More like this configuration was not planned for. I'm thinking the cig lighter is not grounded by car maker. Hope this helped.
In the car audio world I seem to recall some issues with Pioneer units when an owner somehow accidentally made a bad connection. It seems that a tiny fusible link in the unit would blow, and a ground loop noise would get introduced into the system. The fix was to ground the RCA cable inputs to the stereo chassis.
Not a viable solution in this case. I also recognize this may have little direct bearing on the problem, but wonder if somehow a poor power/audio connector in the unit is/has caused the same sort of problem to rear it's ugly head.
Step 1 I think - Do you have another Aux cable to test that as a poor ground on it may have developed from just bending and twisting in normal use.
Go to radio shack and pick up a ground loop isolator. That will get rid of the feedback noise.
Sent from my SGH-T959 using XDA App
I also have the same sound in my car. I remember way back when I thought I was a cool kid and rocked the big subwoofers in my trunk I had the same noise. Then I learned that you couldn't have the power cable running up to the battery and rca cables going to the head unit next to each other. You had to have them separated meaning one would have to go along driver side n the other along passenger side. I tried that and presto no more noise. Its the interference of electricity generated from the alternator. Hence, Faster the engine/ alternator goes, higher the noise pitch equalling more interferance due to the higher voltage/current running thru the power cable. Sorry for all that useless info lol!! Quick fix is don't have the power cable plugged in at the same time. The sound goes away, for me at least. Hope it works for you. Other than that I wouldn't really know how to fix it with a cell phone unless that isolator thingy that the other guy said to buy would work.
Sent from my SGH-T959 using XDA App
You should tweet @supercurio
if anyone would know, he would
This has nothing to do with software. This is basically electrical interference in audio channel because the audio is not grounded and power plug from cigarette lighter USB is grounded. Get the isolator, they are usually less than $20, just make sure all the inputs/outputs are what's compatible with your setup.
Mine plugs into AUX port on the car, then i have a 3.5mm Y splitter, one end for phone/mp3 player the other for Sat radio.
Thanks for the tips guys; I think I'll pick up an isolator and give that a try. Unfortunately, the local Radio Shack only stocks isolators for RCA jacks, not 3.5mm, so I'll have to wait at least a few more days until it gets here.
The isolator finally showed up, and it worked perfectly. Thanks again for the advice.
Sweet, now get a flux capacitor and find a straight stretch of road. At 88 mph you'll be going at 88mph with a flux capacitor!
My Samsung Note 4 has fairly loud "static" that sounds like it's picking up the internal electronic noise (also slight engine whine when the engine is running) coming through the headphone line when plugged into USB power in my car.
This only occurs when there is no audio playing. As soon as any audio plays, the static/whine goes away 100%.
I would normally first troubleshoot other things besides the Note 4, however, I've used various other mobile devices in my car and they all have had zero noise.
This is using the AUX input in a 2007 Honda Civic via the headphone jack and powering it via a 12v cigarette adapter to 2A USB plug.
Anyone else experience this? It just seems very strange that it only happens when there is no audio playing and the fact that no other devices I've tried have this issue. (Various IOS devices and a Nexus 7 don't exhibit this problem)
Thanks for any suggestions!
Update: Swapped USB power adapters, USB cables of various brands including the OEM samsung cable and various audio cables with no change.
I've found that the noise is there with just the power hooked up. (engine off) The "static" changes as I use the device, so it appears it's picking up the internal electronics "noise".
It just really makes me thing it's not a hardware issue if the "noise/static" goes away as soon as any audio plays. Then a second or so after the audio stops, the static kicks in again. Not certain if I should exchange the device.
Update 2: After more googling, I see that others have had this same problem and as silly as it sounds, someone made an "Aux Noise Filter" application. I tried it and it did cut maybe 95% of the noise.
The app shows a date of Aug. 2013. Just seems silly that the problem has been going on this long??