opaqueice;174803 Wrote: > Well, I can check for this in two rather precise ways. First, I can > play a silent track through the SB with the volume on everything maxed. > If I don't hear a hum at that level, it's hard to believe it could > affect my listening experience when the volume is much lower and music > is playing. Sorry, I didn't mean to imply that it wasn't fairly easy to detect any hum problem. This first approach (listening maxed out with no signal) is probably the best way to decide if you have such a problem, because....
opaqueice;174803 Wrote: > Second, and I'll try this, I can connect the analogue out of the SB to a > computer audio interface I have and record the waveform. If there's a > 60 Hz component it will show up (either in the fourier transform or > just by eye). I suspect that even the very best possible output from any device that is mains powered will contain *some* element of 60Hz hum which you'll be able to isolate with an FFT. But how can you tell whether it's a problem? How far down does the hum component need to be before it affects the signal? That's why I'd say the listening test is probably more useful in practice. -- cliveb Performers -> dozens of mixers and effects -> clipped/hypercompressed mastering -> you think a few extra ps of jitter matters? ------------------------------------------------------------------------ cliveb's Profile: http://forums.slimdevices.com/member.php?userid=348 View this thread: http://forums.slimdevices.com/showthread.php?t=31758 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
