2008/9/12 Reuben Martin <reuben.m@xxxxxxxxx>: > Back on Thursday 11 September 2008, Emanuel Rumpf was like: >> 2008/9/10 Fons Adriaensen <fons@xxxxxxxxxxxxxxx>: >> > On Wed, Sep 10, 2008 at 01:01:58PM +0200, Martin Horn wrote: >> >> I don't know if such a thing exists for the linux audio world, but to >> >> get the effect of an exciter you basically need multiband dynamics. That >> >> is a compressor/ expander that works in multiple frequency bands which >> >> are separated by crossovers. >> > >> > That would be more a 'compellor' than an exciter. >> > Easy to confuse, both are originally from Aphex. >> >> Someone wrote a kind of tutorial some time ago: >> http://ardour.org/node/405 >> >> Would be nice to have this as jack-rack file or in rackarrack. >> >> exciter : audio-signal => highpass >> => dissortion => add to audio-signal >> enhancer: audio-signal => (different) bandpass filters => dissortion >> => add to audio-signal >> (so described in wikipedia) > > Exciter has nothing to do with dynamics. And not really anything to do with > distortion so much as harmonics. > > You use a harmonics generator, cut the fundamental, and add in odd ordered > harmonics, with each successice odd harmonic going in opposite directions. > The lower order harmonics are not very noticeable, but very smooth. The > higher order harmonics are much more noticeable, but very abrasive sounding. > I generally use all of the first, and about half of the third. > > It goes: > > original signal => high pass filter => harmonics generator => attenuator > (variable depending on how much you want to add in) => mix back in with > original signal. > > Here's a jack-rack file demonstrating it. Route your source into the > jack-rack, and then direct jack-rack's output to the same destination as your > source. Change levels on the "simple amplifier" to adjust how much you need > added back in. > > You need the proper ladspa plugins installed for this... > Thank you Reuben Now where I tried your rack-rack file, I better understand the Exciter. Is it a minor or mayor third? Does one need to know the key / tonality, for adding harmonics ? -Emanuel _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
