18 Feb
2004
18 Feb
'04
1:52 p.m.
Paul Winkler wrote:
Yes, mostly, because higher harmonics also cause zero crosses. Musical
instruments are not sinusoidal waveform generators. :-) (also, the
numbers above were the average frequency of zero-crosses, which mean
actually half that audio frequency, because every cycle has 2
half-cycles... so that 8-12 kHz is not really surprising...)
One per LADSPA buffer, in the worst (but not very unlikely) case.
Tom
The fact is, if
you have a
normal musical signal, it will have much higher frequency components so
zero-crosses occur much more frequently than this limit. I investigated
this problem a bit before i settled on that 40 Hz... a mixed signal
(a few instruments together), or higher pitched instruments usually
give average zero-cross frequencies of 8-12 kHz.
that high? no kidding?
Not too many instruments get below 40 Hz that I know of ... synths
and pipe organs, mostly. And they *usually* have a lot of higher
freqs mixed in.
That's why there is many zero-crosses in almost any case... more than
what the instrument's base frequency would yield.
So if you take
a 30 Hz sinusoidal from an oscillator and feed it into
this plugin, then there will be unprocessed segments
just one, right?