>"String" sounds are implemented by having two ranks tuned slightly different from each other.
The effect you describe is called "voix celeste" (or just "celeste") on pipe organs. But it's common to have "string" stops without the detuning. These are just open flue pipes with unusually narrow scaling, which causes them to produce lots of upper harmonics and weak fundamentals, like real bowed string instruments.
The effect you describe is called "voix celeste" (or just "celeste") on pipe organs. But it's common to have "string" stops without the detuning. These are just open flue pipes with unusually narrow scaling, which causes them to produce lots of upper harmonics and weak fundamentals, like real bowed string instruments.