Support and General Use > Recording
Recording on ipod (was: nano recording volume)
soap:
--- Quote from: Hajaz on January 08, 2007, 02:16:03 PM ---hello.
would it be posible to make a connector that would allow line in recording and charging at the same time?
i need to record an 8 hour set soonish and im pretty sure my G5's battery wont last that long.
ive been looking at the belkin tunetalk stereo thingie but it seems it looses alot of the low and mid tones during its recording.
--- End quote ---
Yes. It would also be worthwhile to experiment with powering the FireWire pins instead of the USB pins, so you can plug and unplug the power at any time w/o fear of triggering Rockbox's reboot into Apple Disk Mode.
Hajaz:
cool.
the voltage is the same right?
(iow i could charge via the firewirepins with a usb connector?)
Chronon:
I believe that USB uses 5 V while firewire uses 12 V. You should verify this before applying power to your iPod, though.
Clearly you have to make an adapter that delivers the correct signals to the correct pins in your dock connector. How you do this is up to you. I would avoid using any USB connectors at all to avoid confusion.
zlp:
Another partial success story recording with the Nano (1G of course.)
I plugged the headphone-out of my tuner into the Nano's headphone-out, turned it up a good bit louder than I should have (don't want to fry the Nano!) and got healthy-looking levels...
The original WAV file (1.5M)
http://www.zachpoff.com/guests/guestbox/R070110-221826.wav
An MP3 version, amplified so you can hear it better (128K)
http://www.zachpoff.com/guests/guestbox/R070110-221826.mp3
The levels turned out to be -24dB, not as healthy as they looked. The recording is quite distorted but it verifies that the Nano does indeed have an ADC. It has been suggested that the Nano has no connection between the headphone jack and the ADC, and that we are really hearing crosstalk between the headphone amp circuit and the ADC (which I presume is wired to the dock connector). After listening to the recording I would agree. I haven't tried the dock connector line-in yet but I'm hoping it will be a step closer to usable.
drumthrasher109:
okay i tried this on my 5g. i plugged my computers audio into the headphone port (volume all the way up), recorded through line in and mic, then played it back on my computer (volume all the way up) and didn't hear jack crap.
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