Support and General Use > Recording
A simple test everyone with a remote can try - Remote Recording interference
Mmmm:
You can test this easily as long as you have a remote handy..
-Go into the recording screen (make sure input is set as line in and no microphone is attached)
-Make sure the remote is plugged in
-Turn gain up until you see a readout on the peakmeter (mine starts at about 26db on right channel)
-Turn it up a bit more so that you can see the readout clearly (about 35db is fine for mine)
-Now pull out the remote. Has the peakmeter gone blank?
-Plug remote back in. Interference?
If yes vote yep....
I'm curious as to whether this is just my unit or is it a universal problem or maybe it has something to do with the ticking phenomenon.
Maybe the ticking fix being active on the recording screen may fix this. Who knows....
Hansmaulwurf:
Just tested it. I see a readout on the right channel, but only if gain is at 47dB or higher(you can only go up to 48dB). And it is a really thin line, only the first line of pixels. When I pull out the remote the readout is gone.
I have "Reduce Ticking" 'on'.
whatboutbob:
crap crap crappety crap.
I just did some tests on this remote interference. Can't believe I haven't noticed it before. I just wrote the noise off to mic shortcomings...how wrong I was.
As Mmmm suggested, I set source to line in, didn't plug a mic in, then recorded w/ a varety of gain, then measured noise floor (in dB):
First with no gain (left channel, right channel):
w/ remote: -84, -81
w/o rem: -84, -84
20dB gain:
w/ remote: -72, -63
w/o rem: -81, -81
48dB gain:
w/ remote: -42, -36
w/o rem: -52, -52
I repeat: crap crap crappety crap.
LinusN suggested that the main iriver units aren't grounded properly...some worse than others. I think this idenitifies the damn source of cell phone interference I've encountered in some of my recordings. Unless I'm mistaken (and that's entirely possible) the remote is essentially acting like a giant antenna.
So, now all we need is an electronics guru to confirm this issue and find a fix (please!). :)
edit: oh, and 'reduce ticking' makes no obvious impact on the interference.
Mmmm:
--- Quote from: Hansmaulwurf on June 01, 2006, 07:56:54 AM ---Just tested it. I see a readout on the right channel, but only if gain is at 47dB or higher(you can only go up to 48dB). And it is a really thin line, only the first line of pixels. When I pull out the remote the readout is gone.
--- End quote ---
Hansmaulwurf it seems you have the interference but so slight as to be unnoticable...Do you usually have ticking when you listen to music with the fix off?
--- Quote from: whatboutbob on June 01, 2006, 09:02:18 AM ---crap crap crappety crap.
--- End quote ---
Yep.... isn't it just?
--- Quote ---First with no gain (left channel, right channel):
w/ remote: -84, -81
w/o rem: -84, -84
20dB gain:
w/ remote: -72, -63
w/o rem: -81, -81
48dB gain:
w/ remote: -42, -36
w/o rem: -52, -52
--- End quote ---
Ahhh some solid data to chew on......
Yep...its crap! :D
--- Quote ---edit: oh, and 'reduce ticking' makes no obvious impact on the interference.
--- End quote ---
I don't think that the ticking fix is active during recording even if you have it set to on (could be totally wrong there though).
I thought maybe if it was active it may fix the problem...may be worth a try eh?
Hansmaulwurf:
--- Quote from: Mmmm on June 01, 2006, 10:00:42 AM ---Hansmaulwurf it seems you have the interference but so slight as to be unnoticable...Do you usually have ticking when you listen to music with the fix off?
--- End quote ---
I hear the ticking only when im at the WPS and music is stopped or Volume is set lower than -82dB. And even with that Volume you have to listen very carefully to hear it.
Ah, and its no difference if the "Reduce Ticking" is On or Off. the interfernece stays the same.
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