Image 1: Impulse response reverbs like Audio Ease’s Altiverb excel at cloning real acoustic spaces.
The entire world of ’verb—from traditional to extreme—really does lie at your fingertips. Here’s how to access it.
This article is for recording guitarists eager to make the most of reverb plug-ins. We’ll explore the various reverb types, decode the controls you’re likely to encounter, and conclude with some suggestions for cool and creative reverb effects.
This is not a buyer’s guide, though you’ll hear many different products. Our focus is common reverb plug-in parameters and how to use them. Nearly all modern DAWs come with good-sounding reverbs. You can also add superb third-party plug-ins. But there are also plenty of free and budget-priced reverbs—just google “free reverb plug-in.”
Reverb = delay. Reverb is merely a delay effect. Sounds traveling through air eventually encounter surfaces. Some sound bounces off these surfaces, producing a complex network of echoes, made even more complex when the initial reflections bounce off secondary surfaces.
The controls on reverb plug-ins define how the software mimics this process. Function names can be confusing, but remember, everything relates to acoustic phenomena that you already understand intuitively. For example:
- The space’s size. (The further a sound travels before hitting a surface, the slower the echoes arrive.)
- The hardness of the reflective surfaces. (The harder the material, the louder, brighter, and more plentiful the echoes.
- The relative angles of the reflective surfaces. (A square room sounds different than a round one, which sounds different than a trapezoidal one.)
- The presence of other objects. (Soft surfaces like carpets, cushions, and acoustic foam diminish the reverb, usually affecting some frequencies more than others.)
- The listener’s location. (The further an ear or microphone from the sound source, the more reverberation is perceived.)
Understanding Reverb Types
By definition, all reverb plug-ins are digital. Most are either algorithmic or convolution-based. Algorithmic reverbs employ delay, feedback, and filters to mimic sounds bouncing around in space. Convolution reverb (also called impulse response or IR reverb) creates “snapshots” of actual sonic spaces and audio devices. In convolution, developers amplify a test tone in the targeted space (or through a target piece of audio gear) and record the results. The software compares the new recording to the dry test tone, and then it applies corresponding adjustments to any audio, making it sound as if it was recorded in the modeled space or through the modeled gear. (That’s how the speaker simulations work in most amp modelers.) Algorithmic and convolution reverbs often perform the same tasks, just via different methods.
But when we make musical choices, we rarely think, “This should be algorithmic and that should be convolution.” We’re usually trying to evoke a particular sound: a place, an old analog device, a freaky sound not found in nature. So, let’s take a whirlwind tour of reverb history, with thoughts about obtaining those sounds via plug-ins.
A Haul-Ass Reverb History
Real spaces. Before the 20th century the only reverbs were actual acoustic environments: caves, castles, temples, tombs. It wasn’t till the 18th century that people began constructing spaces specifically for their sonic properties—the roots of the modern concert hall.
Convolution reverbs excel at conjuring specific places. Most IR reverbs include libraries of such sounds. Some evoke iconic spaces and famed studios. IRs can also mimic small spaces, like a closet or compact car.
Clip 1 — A Guitarist’s Guide to Reverb Plug-ins by premierguitar
In Clip 1, you hear the same acoustic guitar snippet through IRs captured inside the Great Pyramid of Giza, the isolation block at Alcatraz prison, Chartres cathedral, and the interior of a VW Beetle, all using Audio Ease’s Altiverb library. (For demo purposes, reverb is applied rather heavily in all audio examples.)
Echo chambers were the earliest form of artificial reverb, though they aren’t all that artificial. The chamber is usually a room with hard, reflective surfaces. A loudspeaker in the chamber amplifies dry recordings, and a distant microphone records the results. It’s still “real reverb,” only it can be added and controlled independently from the original recording. This process evolved during the 1930s and ’40s. The first popular recording to use the effect was 1947’s “Peg o’ My Heart” by the Harmonicats, produced by audio genius Bill Putnam.
PEG O' MY HEART ~ The Harmonicats (1947)
During a recent recording session at Hollywood’s Sunset Sound, I shot Video 1 in the famed Studio A echo chamber, thanks to house engineer George Janho. You’ve heard this very room countless times. The Doors and Van Halen made most of their records here. You also hear this reverb on “Whole Lotta Love,” the vocal tracks on the Stones’ “Gimme Shelter,” Prince’s 1999 and Purple Rain, and countless other famous recordings.
Sunset Sound Chamber
Echo chambers are well represented in most IR reverb libraries. Most algorithmic reverbs do chambers as well, replicating the general effect without modeling a particular space. You can even find plug-ins dedicated to a specific chamber, like Universal Audio’s Capitol Chambers, which models the Hollywood chamber famously used by Frank Sinatra.
Spring reverbs. These were the first truly artificial reverbs. They initially appeared in pre-WWII Hammond organs, and by 1960 or so they had migrated to guitar amps. Fender wasn’t the first company to make reverb-equipped amps, but their early-’60s reverb units still define the effect for many guitarists.
The reverb effect is produced by routing the dry signal through actual springs, with a microphone capturing the clangorous results and blending them with the original tone. Springs generally sound splashy, trashy, and lo-fi, often in glorious ways. It’s an anarchic sound, best captured in a plug-in via IRs. Most of the spring reverb sounds in guitar modelers are IR-based. Meanwhile, reverb stompboxes—usually algorithmic—mimic the sound with varying degrees of success.
Plate reverb appeared in the late 1950s, initially in the Elektromesstechnik EMT-140, which remains a sonic gold standard. Plate reverb works similarly to spring reverb, but a massive metal sheet replaces the springs. It’s generally a smooth, sensuous sound relative to a spring.
Clip 2 — A Guitarist’s Guide to Reverb Plug-ins by premierguitar
In Clip 2, you hear the same acoustic guitar snippet through impulse responses of a Fender spring reverb unit and a vintage EMT-140 plate.
There are countless plate clones among today’s reverb plug-ins. Some are convolutions based on analog gear. But algorithmic reverbs also excel at faux-plate sounds. In fact, one of the initial goals of early digital reverb was to replace cumbersome mechanical plates. Speaking of which.…
Digital reverb (the algorithmic kind) arrived in 1976 via the EMT-250, also from Elektromesstechnik. Lexicon and AMS produced popular rivals. They focused largely on mimicking rooms, chambers, and plates. Sound quality has improved over the decades thanks to increased processing power and clever programming.
Today you can get far “better” algorithmic reverb from plug-ins. But ironically, those primitive digital ’verbs are trendy again in pop production. You can find precise clones of retro-digital hardware in plug-in form.
Convolution reverb debuted at the end of the century, popularized by Sony’s DRE S777 unit. Convolution reverbs often have fewer controls than their algorithmic cousins because most of the process is baked into the impulse response.
Most convolution reverbs have similar sound quality. The free ones can sound as good as the pricy ones. Higher prices are often based on the size and quality of the included IR libraries. Google free reverb impulse responses for gratis goodies.
Recent wrinkles. There are always interesting new reverb developments. For example, Things — Texture from AudioThings and Silo from Unfiltered Audio are anarchic granular reverbs that loop and manipulate tiny slices of the reverb signal to create otherworldly effects ranging from the brutal to the beautiful.
Clip 3 — A Guitarist’s Guide to Reverb Plug-ins by premierguitar
Clip 3 includes several granular reverb examples.
Image 2: Zynaptiq’s innovative Adaptiverb generates reverb via pitch-tracking oscillators rather than delays and feedback loops.
Some newer reverbs employ artificial intelligence to modify the effect in real time based on the audio input. iZotope’s Neoverb automatically filters out frequencies that can muddy your mix or add unwanted artifacts. And Zynaptiq’s Adaptiverb generates reverb in a novel way: Instead of echoing the dry signal, it employs pitch-tracking oscillators that generate reverb tails based on the dry signal. It, too, excels at radical reverbs suitable for sound design.
Clip 4 — A Guitarist’s Guide to Reverb Plug-ins by premierguitar
Clip 4 demonstrates a few of its possibilities.
Common Reverb Plug-in Controls
The knob names on a reverb plug-in can get confusing, but remember that they control variables that you already understand intuitively. Also, not all controls are equally important. The most essential ones are the wet/dry balance and the reverb decay time (how long it continues to sound). By all means learn the subtler functions, but don’t be surprised if you use them only rarely.
Video 2 walks you through most of the controls you’re likely to encounter on an algorithmic reverb plug-in. I used ChromaVerb from Apple’s Logic Pro DAW for the demo, but you’ll encounter similar parameters on most algorithmic reverb plug-ins.
Digital Reverb Walkthrough
Creative Reverb Ideas
Spring things. The single reverb knob on vintage amps is simply a wet/dry blend control. Some spring reverbs add a dwell control to set the amount of reverb input. Higher settings mean louder, longer reverberation.
But in the digital realm, you can deploy old-fashioned spring reverb in newfangled ways. For example:
- Pan the dry signal and spring sound apart for a broad stereo effect. (Traditional spring reverb is strictly mono.)
- Add predelay, inserting space between the dry and wet signals. (If the plug-in has no predelay control, just add the effect to an effect bus with a 100 percent wet, no-feedback delay upstream.)
- Route a guitar signal to two different spring reverb sounds, panned apart.
- Assign the reverb to an effect send, add a compressor to the effect channel, and then sidechain the compressor to the dry guitar sound. That way, the reverb is ducked when the guitar is loud, but swells to full volume during quiet passages.
- Apply digital modulation to the wet signal for detuned or pulsating effects.
Clip 5 — A Guitarist’s Guide to Reverb Plug-ins by premierguitar
Clip 5 starts with a straightforward spring sound before demonstrating the above options in order.
Fender-style reverb is so ubiquitous that simply using less familiar spring sounds can be startling.
Clip 6 — A Guitarist’s Guide to Reverb Plug-ins by premierguitar
Clip 6 is a smorgasbord of relatively obscure spring sounds from AudioThing’s Springs and Amp Designer, Logic Pro’s amp modeler.
Finally, it can be exciting to use springs on tracks that don’t usually get processed that way. For example, spring reverb is often considered too quirky and lo-fi to use on acoustic guitar or vocals.
Clip 7 — A Guitarist’s Guide to Reverb Plug-ins by premierguitar
But Clip 7 shows how attractive springs can sound on voice and acoustic. (You hear the dry sounds first.)
Unclean plates. In contrast to a spring’s lo-fi clank, simulated plate reverb is smooth and warm. Even if your track already has spring reverb, you might apply some plate ’verb to integrate it into a mix.
One creative avenue is deploying smooth plate reverb in relatively lo-fi ways. For example:
- Try placing the reverb before an amp modeler on a track to mimic a reverb stompbox. That way, the reverb is colored by both amp and speaker.
- Imagine a guitar amp with a huge metal plate inside instead of springs. If your amp modeler lets you use pure amp sounds without speaker modeling and vice-versa, try sandwiching a plate sound between two instances of amp modeler on the same track. Turn off the speaker sound on the first amp sim and use only the speaker sound on the second one. This way, only the speaker colors the reverb.
- Plate reverb also sounds great panned separately from the dry sound.
Clip 8 — A Guitarist’s Guide to Reverb Plug-ins by premierguitar
Clip 8 starts with a conventional plate sound before demoing the above ideas.
Liquid reverb. Reverb plug-ins have one big advantage over hardware: Everything can be automated within your DAW.
Automated Reverb
In Video 3 I’ve written automation for both the decay time and reverb damping for an evolving effect that would have been difficult on hardware.
Oh, the places you’ll go. Convolution reverbs usually have fewer controls than their algorithmic cousins. You might do no more than adjust the wet/dry or fine-tune the decay time. But IR reverbs don’t have to be “plug and play”—especially if you create your own reverbs. It’s a surprisingly simple process. (Some IR reverbs, like Altiverb and Logic Pro’s Space Designer, come with an app to generate the needed signals and process the recordings for use.)
Image 3: You can get cool, if unpredictable, results by dropping random audio files into an impulse response reverb like Logic Pro’s Space Designer.
Theoretically, you need a hi-fi PA system to amplify the needed tones in the target space, and good microphones to capture the results. But not always! I’ve captured cool IRs in my travels with nothing more than an iPhone and a spring-loaded clipboard in lieu of the traditional starter pistol. I’ve even obtained decent results by clacking a couple of stones together.
Clip 9 — A Guitarist’s Guide to Reverb Plug-ins by premierguitar
Clip 9 includes quick and dirty IRs that I captured in a Neolithic cave painting site in France, a thousand-year-old ancient Anasazi ball court in Arizona, an ancient Greek stone quarry, a 19th-century limestone kiln in Death Valley, and the inside of an acoustic guitar.
You can also get interesting, if unpredictable, results loading random audio files into the IR reverb.
Clip 10 — A Guitarist’s Guide to Reverb Plug-ins by premierguitar
Clip 10 features a dry guitar snippet, followed by bizarre reverb effects generated by drum loops, synth tones, and noises.
New sounds, new spaces. Using reverb plug-ins can be incredibly simple. Often it’s just a matter of scrolling through factory presets, or making basic balance and decay time adjustments. You can also use them in endlessly creative ways. Whatever your goals, I hope this article helps you find exactly the sounds you seek.
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A phaser with vintage vibes and modern control from Stewmac—win the Phasor II Kit in the I Love Pedals giveaway! Enter today and return daily for more chances!
StewMac Lightcycle Phasor II Pedal Kit, With White Enclosure
StewMac Lightcycle Phasor II Pedal Kit, With White Enclosure Shop StewMac Lightcycle Phasor II Pedal Kit at StewMac. Our take on the revered Mu-Tron Phasor II—the most versatile phaser ever made! StewMAX FREE Shipping!Whitman Audio introduces the Decoherence Drive and Wave Collapse Fuzz, two innovative guitar pedals designed to push the boundaries of sound exploration. With unique features like cascading gain stages and vintage silicon transistor fuzz, these pedals offer musicians a new path to sonic creativity.
Whitman Audio, a new audio effects company, has launched with two cutting-edge guitar pedals, the Decoherence drive and Wave Collapse fuzz. Combining science and art to craft audio effects devices, Whitman Audio aims to transcend the ordinary, believing that magic can occur when the right musician meets the right tool.
Delivering a solution for musicians looking to explore a wide range of sounds, each pedal offers a unique path to finding your own voice. The Decoherence drive injects a universe of unique saturation into your music arsenal while the Wave Collapse fuzz takes you to uncharted sonic territories.
Decoherence features include:
- Cascading stages (Gain A > Gain B) each with a unique sound and saturation character
- Gain A - Medium to high gain stage with a mid focus for clear articulation and punch
- Gain B - Low to Medium gain with a neutral EQ that compliments and expands Gain A
- G/S Toggle - Selects the clipping diodes for Gain B (NOS Germanium or NOS Silicon)
- Tone Knobs (H & L) - Tuned active Baxendall style EQs that boost or cut Highs and Lows
- True bypass switching, accepts standard 9V DC power supplies (does not accept battery)
Introducing: Decoherence Drive - YouTube
Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.Wave Collapse features include:
- Vintage Silicon transistor fuzz that goes from vintage clean to doom metal mean
- Buffered input and pickup simulation ensure it sounds great anywhere in your chain
- Bias Knob - Allows for a huge range of texture and response in the pedals gain structure
- Range and Mass Toggles - Provide easy access to three diverse bass and gain ranges
- Filter Knob - A simple-to-use tilt EQ enhanced by the Center toggle for two mid responses
- True bypass switching, accepts standard 9V DC power supplies (does not accept battery)
The Decoherence drive and Wave Collapse fuzz pedals carry retail prices of $195.00 each.
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Introducing: Wave Collapse Fuzz - YouTube
Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.The National New Yorker lived at the forefront of the emerging electric guitar industry, and in Memphis Minnie’s hands, it came alive.
This National electric is just the tip of the iceberg of electric guitar history.
On a summer day in 1897, a girl named Lizzie Douglas was born on a farm in the middle of nowhere in Mississippi, the first of 13 siblings. When she was seven, her family moved closer to Memphis, Tennessee, and little Lizzie took up the banjo. Banjo led to guitar, guitar led to gigs, and gigs led to dreams. She was a prodigious talent, and “Kid” Douglas ran away from home to play for tips on Beale Street when she was just a teenager. She began touring around the South, adopted the moniker Memphis Minnie, and eventually joined the circus for a few years.
(Are you not totally intrigued by the story of this incredible woman? Why did she run away from home? Why did she fall in love with the guitar? We haven’t even touched on how remarkable her songwriting is. This is a singular pioneer of guitar history, and we beseech you to read Woman with Guitar: Memphis Minnie’s Blues by Beth and Paul Garon.)
Following the end of World War I, Hawaiian music enjoyed a rapid rise in popularity. On their travels around the U.S., musicians like Sol Ho’opi’i became fans of Louis Armstrong and the New Orleans Rhythm Kings, leading to a great cross-pollination of Hawaiian music with jazz and blues. This potent combination proved popular and drew ever-larger audiences, which created a significant problem: How on earth would an audience of thousands hear the sound from a wimpy little acoustic guitar?
This art deco pickguard offers just a bit of pizzazz to an otherwise demure instrument.
In the late 1920s, George Beauchamp, John and Rudy Dopyera, Adolph Rickenbacker, and John Dopyera’s nephew Paul Barth endeavored to answer that question with a mechanically amplified guitar. Working together under Beauchamp and John Dopyera’s National String Instrument Corporation, they designed the first resonator guitar, which, like a Victrola, used a cone-shaped resonator built into the guitar to amplify the sound. It was definitely louder, but not quite loud enough—especially for the Hawaiian slide musicians. With the guitars laid on their laps, much of the sound projected straight up at the ceiling instead of toward the audience.
Barth and Beauchamp tackled this problem in the 1930s by designing a magnetic pickup, and Rickenbacker installed it in the first commercially successful electric instrument: a lap-steel guitar known affectionately as the “Frying Pan” due to its distinctive shape. Suddenly, any stringed instrument could be as loud as your amplifier allowed, setting off a flurry of innovation. Electric guitars were born!
“At the time it was positively futuristic, with its lack of f-holes and way-cool art deco design on the pickup.”
By this time, Memphis Minnie was a bona fide star. She recorded for Columbia, Vocalion, and Decca Records. Her song “Bumble Bee,” featuring her driving guitar technique, became hugely popular and earned her a new nickname: the Queen of Country Blues. She was officially royalty, and her subjects needed to hear her game-changing playing. This is where she crossed paths with our old pals over at National.
National and other companies began adding pickups to so-called Spanish guitars, which they naturally called “Electric Spanish.” (This term was famously abbreviated ES by the Gibson Guitar Corporation and used as a prefix on a wide variety of models.) In 1935, National made its first Electric Spanish guitar, renamed the New Yorker three years later. By today’s standards, it’s modestly appointed. At the time it was positively futuristic, with its lack of f-holes and way-cool art deco design on the pickup.
There’s buckle rash and the finish on the back of the neck is rubbed clean off in spots, but that just goes to show how well-loved this guitar has been.
Memphis Minnie had finally found an axe fit for a Queen. She was among the first blues guitarists to go electric, and the New Yorker fueled her already-upward trajectory. She recorded over 200 songs in her 25-year career, cementing her and the National New Yorker’s place in musical history.
Our National New Yorker was made in 1939 and shows perfect play wear as far as we’re concerned. Sure, there’s buckle rash and the finish on the back of the neck is rubbed clean off in spots, but structurally, this guitar is in great shape. It’s easy to imagine this guitar was lovingly wiped down each time it was put back in the case.
There’s magic in this guitar, y’all. Every time we pick it up, we can feel Memphis Minnie’s spirit enter the room. This guitar sounds fearless. It’s a survivor. This is a guitar that could inspire you to run away and join the circus, transcend genre and gender, and leave your own mark on music history. As a guitar store, watching guitars pass from musician to musician gives us a beautiful physical reminder of how history moves through generations. We can’t wait to see who joins this guitar’s remarkable legacy.
SOURCES: blackpast.org, nps.gov, worldmusic.net, historylink.org, Memphis Music Hall of Fame, “Memphis Minnie’s ‘Scientific Sound’: Afro-Sonic Modernity and the Jukebox Era of the Blues” from American Quarterly, “The History of the Development of Electric Stringed Musical Instruments” by Stephen Errede, Department of Physics, University of Illinois at Urbana-Champaign, IL.
In our third installment with Santa Cruz Guitar Company founder Richard Hoover, the master luthier shows PG's John Bohlinger how his team of builders assemble and construct guitars like a chef preparing food pairings. Hoover explains that the finer details like binding, headstock size and shape, internal bracing, and adhesives are critical players in shaping an instrument's sound. Finally, Richard explains how SCGC uses every inch of wood for making acoustic guitars or outside ventures like surfboards and art.