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2. Organ pipe - Wikipedia

   en.wikipedia.org/wiki/Organ_pipe

   A pipe half the length of another will sound one octave higher. If the longest pipe, C, is 8 feet (2.4 m) in length, the pipe one octave higher will be 4 feet (1.2 m) long, and two octaves above (middle C) will be 2 feet (0.61 m) long. A closed (stopped) pipe produces a sound one octave lower than an open pipe.

3. Organ flue pipe scaling - Wikipedia

   en.wikipedia.org/wiki/Organ_flue_pipe_scaling

   Relationship between number of feet, octave and size of an open flue pipe (1′ = 1 foot = about 32 cm) Play ⓘ Scaling is the ratio of an organ pipe's diameter to its length. The scaling of a pipe is a major influence on its timbre. Reed pipes are scaled according to different formulas than for flue pipes.

4. Wind chime - Wikipedia

   en.wikipedia.org/wiki/Wind_chime

   A metal wind chime. Wind chimes are a type of percussion instrument constructed from suspended tubes, rods, bells, or other objects that are often made of metal or wood.The tubes or rods are suspended along with some type of weight or surface which the tubes or rods can strike when they or another wind-catching surface are blown by the natural movement of air outside.

5. World's Largest Tuned Musical Windchime - Wikipedia

   en.wikipedia.org/wiki/World's_Largest_Tuned...

   The instrument is made from four-inch (102 mm) diameter, thick-walled aluminum tubing. The total weight of the chime is 653 pounds with the musical tubing alone weighing 310 pounds. The 6-foot (1.8 m) by 8-foot (2.4 m) wooden pyramidal shaped top weighs 225 pounds. The center hung circular wood knocker is 3' 6" in diameter and weighs 64 pounds.

6. Pipe organ - Wikipedia

   en.wikipedia.org/wiki/Pipe_organ

   The pipe organ is a musical instrument that produces sound by driving pressurised air (called wind) through the organ pipes selected from a keyboard. Because each pipe produces a single pitch, the pipes are provided in sets called ranks , each of which has a common timbre , volume, and construction throughout the keyboard compass .

7. Nominal Pipe Size - Wikipedia

   en.wikipedia.org/wiki/Nominal_Pipe_Size

   Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...