science

Reverb effect

Reverb effect is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Reverb effect rather than just read about it. In short: A reverb effect, or reverb, is an audio effect applied to simulate reverberation. It may be created through physical means, such as echo chambers, or electronically through audio signal processing.

Key takeaways

Reverb effect belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Reverb effect to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Reverb effect from memory before moving on to harder problems.

Reference excerpt

A reverb effect, or reverb, is an audio effect applied to simulate reverberation. It may be created through physical means, such as echo chambers, or electronically through audio signal processing. The American producer Bill Putnam is credited for the first artistic use of artificial reverb in music, on the 1947 song "Peg o' My Heart" by the Harmonicats. Spring reverb, created with a series of mounted springs, is popular in surf music and dub reggae. Plate reverb uses electromechanical transducers to create vibrations in large plates of sheet metal. Convolution reverb uses impulse responses to record the reverberation of physical spaces and recreate them digitally. Gated reverb became a staple of 1980s pop music, used by drummers including Phil Collins. Shimmer reverb, which alters the pitch of the reverberated sound, is often used in ambient music.

Varieties

Echo chambers

The first reverb effects, introduced in the 1930s, were created by playing recordings through loudspeakers in reverberating spaces and recording the sound. The American producer Bill Putnam is credited for the first artistic use of artificial reverb in music, on the 1947 song "Peg o' My Heart" by the Harmonicats. Putnam placed a microphone and loudspeaker in the studio bathroom to create an echo chamber, adding an "eerie dimension".

Spring reverb

Spring reverbs, introduced by Bell Labs, use a set of springs mounted inside a box. They work similarly to plate reverb, with a transducer and pickup placed at either end of the spring. The American engineer Laurens Hammond of the Hammond company was granted a patent on a spring reverb system in 1939. Used by the Hammond company to add reverb to Hammond organs, circa 1941, early Hammond reverb units stood four feet tall. In 1959, the Hammond necklace reverb was about 13 inches wide, 1 inch deep and 14 inches tall. In 1960, the Hammond Type 4 reverb unit was no bigger than a brief case. Hammond moved reverb unit production to Hammond-owned Gibbs Manufacturing, then moved again to another Hammond unit, Accutronics, and developed smaller reverb units: the 2-spring Type 1 and the 3-spring Type 8. The Accutronics AccuVerb is an all-tube preamp stereo dual spring reverb unit, with versatile controls. They became popular with guitarists, including surf musicians such as Dick Dale, as they could easily be built into guitar amplifiers. They were also used by dub reggae musicians such as King Tubby. Unique to spring reverb is a high-pitched, ping-like "drip" sound that carries immediately after notes, most noticeable when playing staccato.

Plate reverb

A plate reverb system uses an electromechanical transducer, similar to the driver in a loudspeaker, to create vibrations in a large plate of sheet metal. The plate's motion is picked up by one or more contact microphones whose output is an audio signal that may be added to the original "dry" signal. Plate reverb was introduced in the late 1950s by Elektromesstechnik with the EMT 140.

Digital reverb

Digital reverb units simulate reverb by using multiple delay lines with fading trails, giving the impression of sound bouncing off surfaces. Some digital effects allow users to independently adjust early and late reflections. Digital reverb was introduced in 1976 by EMT with the EMT 250, and became popular in the 1980s.

Gated reverb

Gated reverb combines reverb with a noise gate, creating a "large" sound with a short tail. It was pioneered by the English recording engineer Hugh Padgham and the drummer Phil Collins, and became a staple of 1980s pop music.

Convolution reverb Convolution uses impulse responses to record the reverberation of physical spaces and recreate them digitally. The first real-time convolution reverb processor, the DRE S777, was announced by Sony in 1999. Convolution reverb is often used in film production, with sound engineers recording impulse responses of sets and locations so sounds can be added in post-production with realistic reverberation.

Shimmer reverb

Shimmer reverb alters the pitch of the reverberated sound, an effect often used in ambient music.

References

Illustrations

Worked examples

Example 1 — a first encounter with Reverb effect

Start with the simplest possible case. Write down what Reverb effect claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Reverb effect before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Reverb effect ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Reverb effect

In research: Reverb effect appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Reverb effect in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Reverb effect is common in secondary-school and first-year university syllabi. It links to neighbouring topics Audio effects, so understanding it makes those chapters shorter.
In everyday life: Look for Reverb effect outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Reverb effect in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Reverb effect means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Reverb effect out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Reverb effect in simple terms?

A reverb effect, or reverb, is an audio effect applied to simulate reverberation. It may be created through physical means, such as echo chambers, or electronically through audio signal processing.

Why does Reverb effect matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Reverb effect?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Reverb effect.