Low whistle grip" may be required due to the distance between the holes. They belong to the same woodwind instrument family of end-blown fipple flutes. Though the tone of this instrument varies subtly among makers, low whistles are generally characterised by a more breathy, flute-like sound than traditional tin whistles. While the precise history of the low whistle is often debated, it is known that various kinds of vertical fipple flutes have existed in antiquity. The fipple flutes developed during the 16th century were the ancestors of today's low whistle, carrying through from early transverse flutes the six-holed design tradition and conical
Shepherd's whistle his working dog. They produce clear, high-frequency tones of an easily modulated and variable pitch, allowing the shepherd to communicate a variety of commands. The pitch is at an optimal frequency for the herding dog's hearing, and for penetration and distance to cut through adverse weather when gathering sheep. There are some standard whistle commands, although the commands in use vary. Oral histories have noted primitive whistles made by of folding over a sheet cut from a tin, a jam lid, or dog-food lid, punching a hole, and smoothing sharp edges. They are also produced commercially. Simple whistles may cost