Whistle

From FIS Freestyle wiki

A whistle or call is a simple aerophone, an instrument which produces sound from a stream of forced air. It may be mouth-operated, or powered by air pressure, steam, or other means. Whistles vary in size from a small slide whistle or nose flute type to a large multi-piped church organ.

A whistle or call is a simple aerophone, an instrument which produces sound from a stream of forced air. It may be mouth-operated, or powered by air pressure, steam, or other means. Whistles vary in size from a small slide whistle or nose flute type to a large multi-piped church organ.

[edit] Also see

• Windsock
• Aerial Check List
• Wind
• Anemometer
• Wind Vane
• Wind Speed
• Wind Direction
• Snow and Weather Glossary
• Wind Measurement Systems
• Aerial Course Specification
• Knoll
• LZ (Landing Zone)
• 4002
• Transition
• Inrun

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