Buzzing sound from 3.5 jack?
 

I FIANLLY got my N900 from Dell yesterday, I am so excited!
Anyway, I really like the phone so far, it's taking some getting used to, but I'm working on it.
I have one very grave concern right now, though.
For some reason, any headphones I plug into the jack give a VERY loud, high pitch buzzing or frequency..If I slide the screen up, it gets even louder.
I would think this is some sort of grounding or shielding issue, but I dunno.
Either way, I'm really frustrated with this, since it's so loud it makes all of my headphones unusable on the thing. Anyone have any ideas what could be causing this?

Re: Buzzing sound from 3.5 jack?
 

Are you using the headphones that came in the box with the phone? I experienced the same thing with some apple iphone headphones. Yet with the Nokia headphones I don't hear any kind of interference.

Don't know much about the topic, but I am willing to speculate that the Nokia headphones have some kind of filtering (necessary for this phone) that regular headphones don't.

BTW, Iove your nick! DBZ FTW!

Re: Buzzing sound from 3.5 jack?
 

same thing here

Re: Buzzing sound from 3.5 jack?
 

yea i got the same buzzing sound with other headphones.

Re: Buzzing sound from 3.5 jack?
 

Wait! Don't turn this into a breaker.
Is there anyone who can confirm that random headphones DO work? (Reviews say so)

Re: Buzzing sound from 3.5 jack?
 

def not a breaker for me i love this phone so much you should see my facebook lol

Re: Buzzing sound from 3.5 jack?
 

It has to do with pins. The n900 has an extra pin for video output. Likewise the iPhone has a pin for audio control (play, pause, skip, etc.)

Re: Buzzing sound from 3.5 jack?
 

same thing with my apple iphone headset, but with my creative noise cancelling headphones i don hear that loud buzz or any sort...

Re: Buzzing sound from 3.5 jack?
 

I can confirm that (on my n900) 3rd party earbud/mic combos do not work. I experience the same symptoms as my purple friend (the OP). I would guess that this is because the n900 cannot tell the difference between a headphone/mic combo and a TV out jack by itself and some circutry in the nokia supplied accessories does this job. Then again I could just be talking out of my arse :p

http://farm3.static.flickr.com/2531/...70aab0c3b0.jpg
This is what I am working with.

Re: Buzzing sound from 3.5 jack?
 

No buzzing noise from mine, but only used normal passive buds like UE's and Vmodas.

Re: Buzzing sound from 3.5 jack?
 

I'm not having any sort of noise issues with my sony mdr-ex51 headset.

http://www.quangcaosanpham.com/image...1_36_EX_51.jpg

Re: Buzzing sound from 3.5 jack?
 

Yeah, I have a pair of Skullcandy Full Metal Jackets that have a mic in them. Worked fine in my Cliq. But in this one, if I old the end call button down on the hadphones the whole time..it'll stop.
And would the extra pin matter? The iPhone has them, yeah, ad other headphones work without the buzz.

Re: Buzzing sound from 3.5 jack?
 

The extra ring for the microphone does matter. Apple uses a different arrangement of rings than does Nokia. Apple headphones with mics won't work with Nokia tablets/phones and vice versa.

Nokia standard vs. Apple iPhone standard

Re: Buzzing sound from 3.5 jack?
 

thats nice to know... ill just grab a pair of apple headphones without the mics then. woot! thanks for the info

Re: Buzzing sound from 3.5 jack?
 

you sir are smart! :D

Re: Buzzing sound from 3.5 jack?
 

Paging doctor E. Lectronics!
Here's the catch (it was discussed in a thread before, but i can't really blame you for not findinding it, neither can i): there's an extra pin compared to non-mic headphones, which has do to with the microphone (obviously). The thing is there's either no standard for which one that is, or nokia threw it out and did it their way (which is understandable considering the dual nature of the jack). There was a schematic somewhere to show it, but again, i can't seem to find it
Now, it you use a pair of 'phones which has them the other way around, part of the signal going through the buzzers (the ones in your ears) gets routed through the microphone as well. The buzzers are essentially coils, and the mic a capacitor, and this produces an RLC circuit, which oscillates on its own frequency (in this case, around 16-20 khz it would seem). I'm not sure, but i think pressing the call button on the headset disconnects the mic, which removes the C in RLC, making it go silent
Normal 3 pin headphones should all work. IPhone ones will not because they all have the last 2 pins inverted. For all the others, it's hit-and-miss

Re: Buzzing sound from 3.5 jack?
 

There was thread about it somewhere and 1) there is standard out there 2) Nokia follows it 3) Apple invented their own solution 4) third party earphones often follow iDont version.

Re: Buzzing sound from 3.5 jack?
 

So you're saying I should break out my soldering iron then?

Very well!

Re: Buzzing sound from 3.5 jack?
 

My "Sennheiser cx300" playing perfectly. I've been let me told the problem is not that people "break" the 3.5mm standard - the problem is that the standard is too lax - for example the expected voltage isn't documented! Joel On Software detailed this while giving an example about problematic standards:

http://www.joelonsoftware.com/items/2008/03/17.html

So yes, not all headsets are compatible with all players, despite having the same 3.5mm connector...

Re: Buzzing sound from 3.5 jack?
 

so given the info.... does anyone know of any good earphones to get? I prefer the regular earbud ones, not the in-ear headphones, those bug me. I found some regular earphones, but I prefer something that is more popular with people and hope for good quality ones..

Re: Buzzing sound from 3.5 jack?
 

I'm using Denon AH-C751 in ear headphones and don't have a problems. I haven't even opened the earbuds that came with the device(thought nice to see more in ear headphones coming with a device).

Re: Buzzing sound from 3.5 jack?
 

but the n82 has an extra pin for video and i can use an old set of sony earphones with that and have no buzzing at all.

Re: Buzzing sound from 3.5 jack?
 

Again: ALL mic-less headphones should work just fine, unless they're somehow non-standard (longer jack or some mutation). The device can sense they're the classic 3-pin type and fall back to the correct mode
If you happen to stumble upon the right type of mic phones, it will work too.
If you have the testicularity to chop up the offending jack and rewire it the right way, the wrong type will work too. But that i don't recommend and i doubt we'll see a lot of it either

Re: Buzzing sound from 3.5 jack?
 

I can't return them and the n900 is my only phone. What else am I going to do with them :cool:

Re: Buzzing sound from 3.5 jack?
 

Try this:

If your headphones are making that buzzing sound, and have a button to answer/hangup whatever(like my blackberry headphones for example) hold down the button WHILE you plug in the headphones. Solved the problem for me.

Re: Buzzing sound from 3.5 jack?
 

Close! But for me all that does is spread the left channel across both ears. the true music can be heard when the button is held again.

Re: Buzzing sound from 3.5 jack?
 

Thanks for that, first time I tried my blackberry earphones on the train on the way home. The holding the button while plugging in works.

I have just now connected my N95 remote (that I used to control music on my N82) and then the Blackberry headphones on there and you don't need to press the button while plugging in. Sadly the remote control functions don't work :(