On 21 June 2012 12:02, Marcus Geelnard <mage@opera.com> wrote: > Den 2012-06-21 12:21:40 skrev Anthony Bowyer-Lowe <anthony@lowbroweye.com > >: > >> (Of course, why you'd want to add a DC offset in the first place to an AC >> signal is something of mystery to me but exploratory DSP respects no >> limits.) >> > > I believe this comes into good use when controlling some AudioParams (i.e. > using the output of an AudioNode as the input to an AudioParam), e.g. if > you want to use an LFO (whose original signal varies between -1 and +1) for > oscillating the frequency parameter of a filter between 8000 and 13400 Hz. Ah, good point - thanks! I must confess that I haven't yet dabbled with AudioParams whatsoever, and my brain is still happily stuck in analogue modular land where I simply plumb a cable into a destination modulation input with associated scaling knob at that end. Anthony.
Received on Thursday, 21 June 2012 11:18:01 UTC