[CM] cml, bird, freq-skew

[René Bastian]

Hi,

I translate the 'bird' instrument in my Python project.
But I dont understand what freq-skew does:
--------------------------------
(definstrument bird (startime dur frequency freq-skew amplitude
freq-envelope amp-envelope &optional (lpfilt 1.0) (degree 0)
(reverb-amount 0))
---------------------------------
Is it the 'ix' in the fm algorithm ?
sin(2pi * fc * t + ix * sin(2pi * fm * t))

Thanks,


-- 
René Bastian
www.pythoneon.org