Re: [Harp-L] octave detuning, on purpose

[Slim Heilpern <slim@xxxxxxxxxx>]

On Sep 14, 2014, at 8:07 AM, Robert Hale wrote:

> Chorus is created with a moving time delay combined with the original tone.
> It has motion because the time delay is varying. Detuning is fixed. The
> second tone is stationary and creates a "standing wave" when combined with
> the original.


Hi Robert -

I think maybe that is untrue -- detuning is not fixed (at least with respect to the way most chorus effects are implemented). I think the following definition from Wikipedia (http://en.wikipedia.org/wiki/Chorus_effect#Electronic_effect) is more on the money, at least this is what I would have guessed based on the sound and controls of chorus effects I've used over the last 38 years or so (starting with the original and wonderful Boss CE-1 Chorus Ensemble):

"Regardless of the technology or form factor, the processor achieves the effect by taking an audio signal and mixing it with one or more delayed, pitch-modulated copies of itself. The pitch of the added voices is typically modulated by an LFO, which makes the overall effect similar to that of a flanger, except with longer delays and without feedback."

IOW, it's the delay that's usually fixed, with the LFO controlling the rate and width of the pitch shift.

- Slim.

www.SlideManSlim.com