26 Aug
2014
26 Aug
'14
4:08 p.m.
On Tue, Aug 26, 2014 at 03:46:59PM +0200, Ralf Mardorf wrote:
Yes. The problem here is that the DC offset originates in the
oscillators and is multiplied by the envelope. Hence the result
is not really constant. A highpass filter will remove the constant
or slowly changing part during a note, but not the 'thumps' at the
beginning and end. Depending on the cutoff frequency and the rise
and fall times of the envelope these could still be much larger than
the signal. They won't probably fry you speaker but could result in
clipping and hence crackles.
The only real solution is to remove the DC offset at the output
of the oscillators, before it enters the rest of the audio chain.
--
FA
A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)
"2.23 DC
Offset Remover (dcRemove, 1207)
Simply removes the DC (0 Hz) component from an audio signal, uses a high
pass filter, so has some side effects, but they should be minimal." -
http://plugin.org.uk/ladspa-swh/docs/ladspa-swh.html#tth_sEc2.23
Would this protect against phasex loudspeaker-heater feature?
It's said it's not audible, IIRC I sometimes heard a loud, very loud
single crackle. Could this be caused by a dc offset?