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A hand-pumped Indian harmonium, of the type used in South Asia, here used at a European jazz festival.. The pump organ or reed organ is a type of organ using free-reeds that generates sound as air flows past the free-reeds, the vibrating pieces of thin metal in a frame.
The Indian harmonium, hand harmonium, samvadini, peti ("box"), or vaja, often just called a harmonium, is a small and portable hand-pumped reed organ which is very popular in the Indian subcontinent. [1] The sound resembles an accordion or other bellows driven free-reed aerophones. [1]
A typical Mark II hand pump in India. The pump was designed in the 1970s in a joint effort between the Government of India, UNICEF, and The World Health Organization (WHO) to address the severe drought and a water shortage affecting India during that period and to prevent evacuation of villages to refugee camps. Prior to the pump's design, poor ...
Musical instruments of the Indian subcontinent can be broadly classified according to the Hornbostel–Sachs system into four categories: chordophones (string instruments), aerophones (wind instruments), membranophones (drums) and idiophones (non-drum percussion instruments).
There are many different types of hand pump available, mainly operating on a piston, diaphragm or rotary vane principle with a check valve on the entry and exit ports to the chamber operating in opposing directions. Most hand pumps are either piston pumps or plunger pumps, and are positive displacement. [1]
Those efforts included closing most of Dickey’s virtual eateries, ending franchise agreements with some non-compliant locations, and ensuring the right people were running restaurants.
Elon Musk and Vivek Ramaswamy aim to cut $2 trillion from the federal budget by July 4, 2026. They've said they'll fire federal employees, "delete" agencies, and publicize all of their work.
The Magna Organ was an electric-fan driven free reed organ with the microphone sealed in a soundproof box, instead of the electrostatic pickups used on electrostatic reed organs. [note 1] Early designs of the Magna Organ were a kind of additive-synthesizer that summed-up the partials generated by the frequency-multipliers.