Timeline for Sound Recording Noise in Different Places
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 24, 2014 at 13:36 | comment | added | AJ Henderson♦ | It isn't exactly harmonics. It is a shifting voltage level. Processing an analog signal requires a consistent voltage to compare to in most analog to digital converters. When that power level shifts, so does the perceived signal. Good power isolation prevents that. It is basically the digital version of ground differential (though that is a slight over simplification. ) | |
| Sep 24, 2014 at 8:13 | vote | accept | adba | ||
| Sep 24, 2014 at 8:13 | comment | added | adba | If I let my laptop work with only battery by unplugging power adapter, the noise is gone. I think our electric network has some problem with harmonics. | |
| Sep 22, 2014 at 16:40 | history | answered | AJ Henderson♦ | CC BY-SA 3.0 |