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2014-03-30 07:25 <eintopf> goooodddd moooorrrnninnnggg viiieeettnaaaam
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2014-03-30 10:47 <Guest54638> do you have noise from you NN spk or headphones?
2014-03-30 10:47 <Guest54638> background noise, hiss,fissile that's noticeable when listening to music?
2014-03-30 10:47 <Guest54638> I find it more noticeable when using ear pieces than big headphones
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2014-03-30 14:32 <Web-aptosid876_> do you hear background noise when listening to music?
2014-03-30 14:32 <Web-aptosid876_> on the nano note?
2014-03-30 14:33 <Web-aptosid876_> I'm desperate to know, if my NN is damaged or it's a design fault.
2014-03-30 14:49 <wpwrak> not sure if a lot of people are a) using the ben to listen to music AND b) are around
2014-03-30 14:49 <wpwrak> you may have better luck posting to the qi-hw mailing list
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2014-03-30 15:10 <DocScrutinizer05> I wouldn't be surprised to find it's either a design flaw or a production defect where a filter/buffer capacitor got soldered in a defunct way
2014-03-30 15:11 <DocScrutinizer05> if it was the latter, it's at least easy to fix
2014-03-30 15:12 <DocScrutinizer05> sorry, I never seen a NN, so I can't help
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2014-03-30 15:37 <Web-aptosid876_> I believe I have ask on the mailing list before and didn't get a response, or maybe i didn't, I forget. but thanks
2014-03-30 15:38 <Web-aptosid876_> the noise is a fizz which goes up and down a bit. any hints on how to find out if that is the case?
2014-03-30 15:39 <Web-aptosid876_> ....if it is the case of replacing a capacitor
2014-03-30 15:40 <Web-aptosid876_> but I can try again on the mailing list...
2014-03-30 16:52 <DocScrutinizer05> might be interference between two clocks mixing their noise on VDD
2014-03-30 16:52 <DocScrutinizer05> VDD-analog should be properly filtered
2014-03-30 16:53 <DocScrutinizer05> as mentioned I have no NN and no schematics at hand
2014-03-30 16:54 <DocScrutinizer05> adding a huge plus small low ESR RF enabled buffer capacitor directly to the VDD-ana and VSS-ana-GND pins will for sure not hurt
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2014-03-30 17:28 <Web-aptosid876_> thanks
2014-03-30 17:30 <Web-aptosid876_> http://en.qi-hardware.com/wiki/Audio
2014-03-30 17:35 <Web-aptosid876_> http://downloads.qi-hardware.com/hardware schematics soomewhere here?
2014-03-30 17:50 <DocScrutinizer05> Q6 WTF?!
2014-03-30 17:51 <DocScrutinizer05> but well, that's only built-in amp+speaker
2014-03-30 17:51 <DocScrutinizer05> anyway weiiiiiird
2014-03-30 17:53 <DocScrutinizer05> SW1 maxes so much sense ;-P
2014-03-30 17:53 <DocScrutinizer05> makes*
2014-03-30 17:53 <DocScrutinizer05> could use NN as a hearing aid without any CPU load X-P
2014-03-30 17:55 <DocScrutinizer05> or - without headphone plugged in - even for a nice acoustic theremin (http://en.wikipedia.org/wiki/Theremin), I guess
2014-03-30 17:58 <Web-aptosid876_> I had a opps on disabling the mic-to-spk bypass. opps. I had the levels maxed and got dreadful feedback. could that have damaged it?
2014-03-30 18:01 * whitequark recalls an early Chromebook whose speakers literally caught fire if you ran a stock ALSA on it
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2014-03-30 18:04 <Web-aptosid876_> http://en.qi-hardware.com/w/images/9/9c/Lb60_schematic.pdf
2014-03-30 18:08 <Web-aptosid876_> interesting whitequark
2014-03-30 18:10 <Web-aptosid876_> so might it be worth me getting a new NN? (I'll hope to find a good use for the old one, so don't worry. or maybe sell it if some needs it)
2014-03-30 18:10 <whitequark> nah, unlikely that you have damaged it
2014-03-30 18:10 <Web-aptosid876_> my one was 2rd hand in the first place.
2014-03-30 18:10 <whitequark> and even if you did, it should be relatively easy to fix
2014-03-30 18:11 <Web-aptosid876_> well I did fry the charging IC. had to replace it :D
2014-03-30 18:11 <Web-aptosid876_> bloody surface mount ic's hehe :D
2014-03-30 18:11 <whitequark> a minute with a hot air gun and you're done
2014-03-30 18:12 <Web-aptosid876_> I was experimenting with alternative power supplys and opps
2014-03-30 18:12 <Web-aptosid876_> don't have a hot air gun.
2014-03-30 18:12 <Web-aptosid876_> I guess there is hacker spaces
2014-03-30 18:13 <Web-aptosid876_> but yea, I'll happily fix it if possible :D
2014-03-30 18:13 <whitequark> a hot air gun is cheaper than a new NN ;)
2014-03-30 18:13 <whitequark> especially if you buy it off craigslist
2014-03-30 18:13 <Web-aptosid876_> well I guess there is that
2014-03-30 18:15 <Web-aptosid876_> here's some recording noise recs I did last year: http://george.the-petries.co.uk/nanonote/rec/audiointerfer/
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2014-03-30 20:49 <wpwrak> DocScrutinizer51: what is SW1 ? do you mean S1, "RESETK" ?
2014-03-30 20:50 <DocScrutinizer51> NN audio "SW1" A/D/A bypass
2014-03-30 20:51 <DocScrutinizer51> mic -> amp
2014-03-30 20:54 <wpwrak> something in the SoC ? or an actual component ? i dno't see any switch there on page 6 of Lb60_schematic (except the one built into J3)
2014-03-30 20:57 <wpwrak> neither on page 2, for that matter
2014-03-30 21:18 <Web-aptosid876_> see http://en.qi-hardware.com/wiki/Audio
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2014-03-30 21:49 <wpwrak> aah, inside the chip. that explains it. thanks !
2014-03-30 22:43 <wpwrak> aha, the first goal
2014-03-30 22:43 <wpwrak> judging by the noise level, it must have been by river ...
2014-03-30 22:43 <wpwrak> ... yep,
2014-03-30 22:46 <wpwrak> oh, no. that was before. in silence. now it was for boca, 1:1. interesting.
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2014-03-30 23:01 <wpwrak> aha, another one. very noisy. 2:1 for boca ?
2014-03-30 23:02 <wpwrak> naw, river. damn, i'm getting the noise levels in my area wrong
2014-03-30 23:03 <wpwrak> (the two are the principal clubs in buenos aires, so it's a major event every time they meet)
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2014-03-30 23:12 <Web-aptosid876_> ?
2014-03-30 23:13 <wpwrak> never mind :)
2014-03-30 23:30 <Web-aptosid876_> miro
2014-03-30 23:32 <Web-aptosid876_> tribler.org
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