25 Aug
2006
25 Aug
'06
9:38 p.m.
On Fri Aug 25, 2006 at 03:02:59PM -0700, st wrote:
yep. no different than the 60 hz hum picked up on audio cables, or harmonics of the 60 hz
hum picked up in the AM radio band.. or the ingress filters put at the beginning of
coaxial cable runs through houses..to prevent leakage from shortwave and local radio
stations into the cable network..
im sure it can be solved by just doing your recording in a room whose walls are made of
about 2 " of lead..
Common
misconception... Very high frequency audio does not equal
electromagnetic radiation (radio, etc.). Audio is the compression and
expansion of air, so it isn't really affected by EMI.
Ok, but the microphone converts the air vibrations into electric
vibrations. People have picked up radio in their braces and fillings.
It doesn't seem entirely unreasonable to guess that an electromagnetic
radiation signal vibrating at the same rate as some of the electric
signals in the cables and sampling device might cause audible interference
in the result.