"David Looser is ****ING MORON "


Electric Network Frequency. In effect, allowing the sound recording to
have a small amount of 'mains hum'. (Which tends to happen anyway, even
when you *don't* want it. ;- )

The frequency of mains hum varies with time,


** It wanders a small amount, like 0.1%, around the nominal frequency.

The tolerance within the EU is +/- 1%.


** Got nothing to do with how the frequency REALLY varies over intervals of
time like a few minutes.

Try MEASURING it instead of posting ABSURD ****ING BULL****.

**** HEAD !!



and differs from time to time and with the location (i.e. which mains
network covers your area).

** Mains networks cover huge geographical areas, sometimes whole
countries - within which the frequency is locked in phase.

Even if it only tells you which country it was recorded in, that may well
be significant.

** So each country now has its own characteristic mains frequency ??

When did that happen ????

ROTFLMAO !!

Wot a ****ing AUTISTIC MORON !!!!




Hence
it can and has been used as evicence that recordings were recorded when
and where claimed and have no breaks or edits - or not! Bit like an
audio
forensic version of dating a tree by its growth rings. Surprisngly,
this
technique has been used a number of times in court, etc, and apparently
works well. Even for recordings made on battery systems where the mics
picked up the hum as interference.


** Sure - you can say if it was in a 50Hz or a 60 Hz country.

The difference between 50Hz and 50.5Hz (or even 50.05Hz) is easy to detect
and measure these days.


** But tells you absolutely NOTHING -

YOU RIDICULOUS ****WIT !!!




....... Phil