Boobam

The boobam is a percussion instrument of the membranophone family consisting of an array of tubes with membranes stretched on one end, the other end open. The tuning depends partly on the tension on the membrane but mostly on the length of the tube.

The boobams are an ancestor of the modern octoban.

The tubes were originally made from lengths of giant bamboo although pipes of wood, plastic, metal, and cardboard also have been used. The membranes were originally goat or calfskin but most are now plastic.

The name boobam was coined in Mill Valley, California in 1954 and was described as "bamboo spelled sideways".

In 1948 Harry Partch, an American composer, developed a system of music that depended on the building of various exotic instruments that could play non-tempered scales. Some of them were based on Greek models and some on more primitive instruments like marimbas. Musician David Buck Wheat and his roommate in Sausalito, California, Bill Loughborough, a musician and electronic engineer, built such instruments for Partch as a marimba which was hit with a large soft mallet over the chamber. This device delivered low-cycled tones that were barely audible. Loughborough had scientific instruments borrowed from the Navy Yard, and using an oscilloscope and audio oscillator he and Wheat were able to work on a new technical level that had not been possible before.