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16
2014-Jan
Maya U5 Mic/Line In NoiseDeveloper: meone Views: 11888
I've recorded cards internal noise(signal) - without any mic/line plugged in.
Parameters: 100% rec volume, AGC: Disabled
External link: http://www.sendspace.com/file/4eesqq
I'm wondering if its normal for this sound card to have so much internal noise, or its just my faulty unit?
Blinking LED is introducing great amount of "signal", is there any way to disable/enable it permanently?
I can hear identical high frequency noise on headphone output on mine as well, in addition to line in and mic. Blinking LED affects the signal as well. What is even worse, this is second unit on which I can observe this fault. First one has been exchanged by the retailer I bought it from, but the new one has the same fault as well.
Serial number: ATSAM13G01030
Here's FFT of the headphone output signal made when playing sample music file with very low volume:
Sorry, for picture quality, used phone camera. The circled frequency readout on the right is 12.7 KHz, so the spike is around 13 KHz.
Thanks.