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Drum machine

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A drum machine is an electronic musical instrument designed to create percussion sounds, drum beats, and rhythmic patterns. These devices serve many purposes in music production and performance. They can imitate the sound of a traditional drum kit or produce entirely unique, synthesized electronic tones. Many machines come with pre-programmed beats for popular genres like pop, rock, and dance music. Modern models from the 2010s and 2020s allow users to program their own custom rhythms.

Elektron Analog RYTM - 2014 NAMM Show
Elektron Analog RYTM - 2014 NAMM Show

To understand how they work, we must look at the two main methods of sound generation. Many early machines used analog synthesis to build sounds from scratch. For instance, a machine might create a snare drum sound using a burst of white noise. It might use a sine wave, which is a smooth mathematical curve, to produce a bass drum. Because these sounds are synthesized rather than recorded, each model has a unique sonic character. Other machines use digital sampling, which involves playing back short, recorded snippets of real instruments.

Drum machines vary greatly in their complexity and physical interface. Some models are simple and play short beat patterns in a continuous loop. More advanced machines can program or record complex song arrangements with changes in meter and style. While electronic drums use physical pads that a player strikes, most drum machines use buttons or pads for "live" performance. This allows a musician to play drum sounds on top of a pre-programmed beat. Some machines even allow users to modify pre-programmed patterns to create something new.

Korg Volca Beats 7928
Korg Volca Beats 7928

The history of these instruments began with early, complex inventions. Between 1930 and 1932, Léon Theremin developed the Rhythmicon for Henry Cowell. This device could produce sixteen different rhythms based on the overtone series. In 1957, Harry Chamberlin created the Chamberlin Rhythmate, which used 14 tape loops of percussion sounds. By 1959, Wurlitzer released the Side Man, a machine that generated sounds mechanically using a rotating disc. This machine allowed users to control the tempo between 34 and 150 beats per minute.

Technological shifts in the 1960s changed the shape and sound of rhythm machines. Early models were often large, floor-type machines that used vacuum tubes. As transistors became available, machines became smaller, desktop-sized, and more reliable. In 1963, the company Keio-Giken, later known as Korg, released the Donca-Matic DA-20. This was a floor-type machine that used vacuum tube circuits and a mechanical wheel for rhythms. Later, in 1967, Ace Tone founder Ikutaro Kakehashi developed the FR-1 Rhythm Ace. This machine used a diode matrix circuit to generate its preset patterns.

KORG Donca Matic DA-20 (1963) clip1
KORG Donca Matic DA-20 (1963) clip1

Programmable machines brought even more control to musicians in the late 1970s. In 1978, Roland released the CR-78, the first microprocessor-based programmable machine. It featured four memory storage slots for user-created patterns. In 1980, the Linn LM-1 Drum Computer changed the industry by using digital samples. It was the first machine to do this, though it cost $4,995 at the time. This machine was famously used by artists such as Prince and Michael Jackson.

Linn LM-1 Drum Computer
Linn LM-1 Drum Computer

The impact of specific drum machines on popular music is profound. The Roland TR-808, introduced in 1980, significantly influenced hip hop and electronic dance music. Its successor, the TR-909, released in 1983, helped shape the sounds of techno and house music.

Roland TR-808 drum machine
Roland TR-808 drum machine

These machines have transitioned from physical hardware to software emulations. In the late 1990s, software versions began to overtake the popularity of physical machines housed in plastic or metal chassis. Today, drum machines remain a vital connection between mathematical sound synthesis and human musical expression.

E-mu SP-1200 (111607sp1200)
E-mu SP-1200 (111607sp1200)
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🖼️ Images & Media (11)
File:Elektron Analog RYTM - 2014 NAMM Show.jpg
Elektron Analog RYTM - 2014 NAMM Show.jpg
File:Wurlitzer Sideman drum machine (inside) front view.jpg
Wurlitzer Sideman drum machine (inside)...
File:KORG Donca Matic DA-20 (1963) clip1.jpg
KORG Donca Matic DA-20 (1963) clip1.jpg
File:Ace Tone Rhythm Ace FR-3 - "The Synth World in Naniwa" screenings, talk, and live - UPLINK, Shibuya, 2014-08-24.jpg
Ace Tone Rhythm Ace FR-3 - "The Synth...
File:Linn LM-1 Drum Computer.jpg
Linn LM-1 Drum Computer.jpg
File:Roland TR-808 drum machine.jpg
Roland TR-808 drum machine.jpg
File:E-mu SP-1200 (111607sp1200).jpg
E-mu SP-1200 (111607sp1200).jpg
File:Alesis HR-16B, HR-16.jpg
Alesis HR-16B, HR-16.jpg
File:Alesis SR-16, Devi Ever OK.jpg
Alesis SR-16, Devi Ever OK.jpg
File:Korg Volca Beats 7928.jpg
Korg Volca Beats 7928.jpg
File:Four to the floor Roland TR-707.jpg
Four to the floor Roland TR-707.jpg
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