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Simplified diagram of how a tonewheel works Goldschmidt tone wheel (1910), used as an early beat frequency oscillator. A tonewheel or tone wheel is a simple electromechanical apparatus used for generating electric musical notes in electromechanical organ instruments such as the Hammond organ and in telephony to generate audible signals such as ringing tone.
Aeolian Hammond BA player organ with Hammond tone cabinet (1938) The Hammond organ is an electric organ , invented by Laurens Hammond and John M. Hanert [ 1 ] and first manufactured in 1935. [ 2 ] Various models were produced, which originally used tonewheels to generate sound via additive synthesis , where component waveform ratios are mixed ...
The tone cabinet was originally the only method of adding reverberation to a Hammond organ. [95] The first models to be produced were the 20-watt A-20 and 40-watt A-40. The A-20 was designed for churches and small-capacity halls, and featured a set of doors in front of the speaker, that could be closed when the organ was not in use. [ 96 ]
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The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert [6] and first manufactured in 1935. [7] Multiple models have been produced, most of which use sliding drawbars to vary sounds.
To counteract Hammond's slogan "Music's Most Glorious Voice," Leslie added a similar slogan, "Pipe Voice of the Electric Organ" to the plates. [1] He eventually owned nearly 50 patents on the speaker. [5] Leslie manufactured the speaker to work with other organs besides Hammond, including Wurlitzer, Conn, Thomas and Baldwin. [6]
The Hammond organ tone generator used a non-self-starting synchronous motor (until comparatively recently), and had an auxiliary conventional shaded-pole starting motor. A spring-loaded auxiliary manual starting switch connected power to this second motor for a few seconds.
Korg CX-3 (1980) According to journalist Gordon Reid, it "came close to emulating the true depth and passion of a vintage Hammond." [1]Transporting the heavy Hammond organ, bass pedalboard (a B-3 organ, bench and pedalboard weighs 425 pounds/193 kg) and Leslie speaker cabinets to performance venues makes it cumbersome for artists to tour with a vintage electromechanical organ.