Most of us love good distortion. Saying that sounds weird, but distorting a signal in a musically useful way is an incredibly complex process. The simplest signal waveform, a sine wave, can help illustrate how it works, although a guitar produces a tone much more like a sawtooth wave than a sine wave. The trick is to clip the waveforms; here’s how it happens.
A sine wave is the purest tone possible, just a single frequency. No musical instrument produces a really pure sine wave, although tuning forks get close. The sine wave is smoothly rounded everywhere, with no sudden changes in direction.
 |
If we take that same sine wave and electronically clip off the tops and bottoms at a set clipping level, a crazy thing happens. Just snipping off those tips has a big effect on the sound. A pure sine wave is somewhat generic sounding. Distorting the sine wave by clipping introduces a whole bunch of new sounds called “partials” or “harmonics”. The sound is much more interesting to listen to, as long as we don’t get too carried away with it.
In music, there are fundamentals and partials. A fundamental is the basic tone of any given note – for instance, the frequency A-440 is the standard for musical tuning, which is a sine wave that has a frequency of 440 Hz (Hz is short for Hertz, and stands for one cycle per second). We recognize that a tone of A-880 is one octave higher than A-440. Musicians refer to a musical note that has both A-440 and A-880 mixed as having a fundamental and the first partial. A frequency of three times the basic note frequency is also referred to as the third partial of the basic note. Four times the fundamental is the fourth partial and so on. Since harmonic is another name for a partial, when you hear the term “total harmonic distortion” it means whatever is left after taking out the fundamental sine wave in some waveform.
So there are really two kinds of distortion: simple harmonic distortion, which generates distortion related to the fundamental frequency and adds character to instrument sound, and intermodulation distortion (IMD), which produces non-musically related frequencies at multiples of the sum and differences of two frequencies, considered to
sound harsh to the ear.
Ultimately, the name of the game is to produce harmonic distortion, which makes musically good sounding notes, and to minimize IMD, which makes unmusical sounds and
harsh buzzes. Unfortunately, no matter how hard we try, we can never get all harmonic distortion and no IMD.
One way to keep mostly harmonic distortion is to not have sharp corners on the waves. Tubes help with this process. Tubes generally produce very softly rounded, squashed tops when done on square waves. A pure sine wave is almost devoid of information, having no wiggles or corners in that smoothly rounded top. However, if we took a square wave and massively amplified it, or a triangle wave, or a wave with spikes all over its top and did the same amplify/clip operation on it, we’d get exactly the same result as with the sine wave with massive clipping.
There are other distortion tricks besides clipping a signal. To get an octave sound, a process called full-wave rectification is used. What happens here is the negative half-wave of an alternating current is converted into a positive half-wave. This trick has been used to one degree or another in a number of pedals. Having the signal completely fullwave rectified eliminates the fundamental frequency. But if we half-wave rectify a sine wave, the result still has a lot of the fundamental in it, in addition to a noticeable octave sound. We can also partial full-wave rectify a signal, which makes for an even more noticeable octave sound.
Here’s the big trick: filtering of the signal both before and after the distortion usually has at least as much, if not more, to do with how the distortion sounds than the actual method of distortion. A combo amp with a speaker or two and an open back implements a multi-pole low-pass filter all by itself. This is at least one of the reasons that mic''ing
an amp is preferable to running a distortion signal directly into a PA mixer. The speaker cabinet’s low-pass action smooths off those offending treble shrieks. An electronic multipole low-pass filter is the essence of all the cabinet simulators you hear these days.
Filtering before the distortion is also interesting. Hendrix used a wah pedal before his Fuzz Face. The band-pass effect makes the signal bigger at the frequencies boosted by the wah, so those frequencies get distorted most. You get an interesting change in distortion depending on what notes you hit. This cuts a lot of the harsh sounding IMD, too.
If you are studying science in high school or physics in college and your teacher doesn’t like your long hair and your iPod, bring in a Tube Screamer and present this little distortion lesson to your class. Everyone will love you for it.
Rick Wheeler
Rick Wheeler currently works as Larry Carlton’s guitar tech and front of house engineer. He is also an accomplished jazz guitarist, vocalist, and educator. You can contact Rick at rickwheeler@hughes.net
You can access your complete TONEX library, including Tone Models, presets and ToneNET, quickly load favorites to audition, and save to a designated hardware slot on IK hardware pedals. This easy-to-use application simplifies workflow, providing a streamlined experience for preparing TONEX pedals for the stage.
Fine-tune and organize your pedal presets in real time for playing live. Fully compatible with all your previous TONEX library settings and presets. Complete control over all pedal preset parameters, including Global setups. Access all Tone Models/IRs in the hardware memory, computer library, and ToneNET Export/Import entire libraries at once to back up and prepare for gigs Redesigned GUI with adaptive resize saves time and screen space Instantly audition any computer Tone Model or preset through the pedal.
Studio to Stage
Edit any onboard Tone Model or preset while hearing changes instantly through the pedal. Save new settings directly to the pedal, including global setup and performance modes (TONEX ONE), making it easy to fine-tune and customize your sound. The updated editor features a new floating window design for better screen organization and seamless browsing of Tone Models, amps, cabs, custom IRs and VIR. You can directly access Tone Models and IRs stored in the hardware memory and computer library, streamlining workflow.
A straightforward drop-down menu provides quick access to hardware-stored Tone Models conveniently sorted by type and character. Additionally, the editor offers complete control over all key parameters, including FX, Tone Model Amps, Tone Model Cabs/IR/VIR, and tempo and global setup options, delivering comprehensive, real-time control over all settings.
A Seamless Ecosystem of Tones
TONEX Editor automatically syncs with the entire TONEX user library within the Librarian tab. It provides quick access to all Tone Models, presets and ToneNET, with advanced filtering and folder organization for easy navigation. At the same time, a dedicated auto-load button lets you preview any Tone Model or preset in a designated hardware slot before committing changes.This streamlined workflow ensures quick edits, precise adjustments and the ultimate flexibility in sculpting your tone.
Get Started Today
TONEX Editor is included with TONEX 1.9.0, which was released today. Download or update the TONEX Mac/PC software from the IK Product Manager to install it. Then, launch TONEX Editor from your applications folder or Explorer.
For more information and videos about TONEX Editor, TONEX Pedal, TONEX ONE, and TONEX Cab, visit:
www.ikmultimedia.com/tonexeditor
Valerie June’s songs, thanks to her distinctive vocal timbre and phrasing, and the cosmology of her lyrics, are part of her desire to “co-create a beautiful life” with the world at large.
YouTube
If you’re familiar with June’s sound, you know how effortlessly she stands out from the singer-songwriter pack. Her equal-parts warm, reedy, softly Macy Gray-tinged singing voice imprints on her as many facets as a radiant-cut emerald—and it possesses the trademark sincerity heard in the most distinctive of singer/songwriters. Her music, overall, brilliantly shines with a spirited, contagiously uplifting glow.
Owls, Omens, and Oracles opens with “Joy, Joy!” with producer M. Ward rocking lead guitar over strings (June plays acoustic on nearly all of the tracks and banjo on one). It then recurringly dips into ’50s doo-wop chord changes, blends chugging, at times funky rock rhythms with saxophones and horns, bursts with New Orleans-style brass on “Changed” (which features gospel legends the Blind Boys of Alabama), and explores a slow soul groove with electronic guest DJ Cavem Moetavation on “Superpower.” Bright Eyes’ multi-instrumentalist Nate Walcott helmed the arrangements with guidance from Ward and June, and frequently appears on piano and Hammond organ, while Norah Jones supports with backing vocals on the folk lullaby “Sweet Things Just for You.” The entire album was recorded live to tape, which was a new experience for June.
June shares her perspective on the album and her work, overall. “It’s not ever complete or finished, your study of art,” she offers. “It’s an adventure, and it keeps getting prettier as you walk through the meadow of creating or learning new things. Every artist that you bring in has a different way of performing with you, or the audience might be really talkative or super quiet. And all of that shapes the art—so it’s ever-expansive. It’s pretty infinite [laughs], where art can take you and where it goes.... I kinda got lost there a little bit,” she muses, laughing.
June’s favored acoustic guitar is this Martin 000-15M, with mahogany top, back, and sides.
Photo by Tim Bugbee/Tinnitus Photography
June didn’t connect with guitar in the beginning, but discovered her passion for it later, when the instrument became a vehicle for her self-empowerment. She took lessons as a teenager but was a distracted student, preferring to listen to her teacher share the history of blues guitarists like Big Bill Broonzy and Mississippi John Hurt. “I didn’t pick it up again until I was in my early 20s, and my band that I was in with my ex fell apart,” she says. “I still was singing and I still was hearing these beautiful voices sing me these songs, and I didn’t want to never be able to perform them. It was a terrible feeling, to be … musically stranded.
“And I was like, ‘Now, I could go get a new band and get some more accompaniment, but how ’bout I get my tail in there and keep my promise to my granddad who gave me that first guitar and actually learn how to play it, so I’ll never feel like this again.’ The goal was that I would never be musically stranded again.”
She became a solo performer, learning lap steel and banjo along with guitar, and called her style “organic moonshine roots music.” Today, she eschews picks for fingers, even when strumming chords, and is a vital blues-and-folk based stylist when she lays into her playing–especially in a live,solo setting. After two self-released albums, 2006’s The Way of the Weeping Willow and 2008’s Mountain of Rose Quartz, she connected with the Black Keys’ Dan Auerbach, who recorded and produced her 2013 album, Pushin’ Against Stone, at Nashville’s Easy Eye Sound, which helped launch her now-flourishing career.
Valerie June’s Gear
Guitars
Amps
- Fender Deluxe Reverb
Effects
- TC Electronic Hall of Fame
- MXR X Third Man Hardware Double Down booster
- J. Rockett Audio Archer boost/overdrive
Strings
- D’Addario XL Nickel Regular Light (.010–.046)
- Martin Marquis Silked Phosphor Bronze (.012–.054
Photo by Travys Owen
As we talk about art being a shared experience, June says she can be a bit of a hermit at times, but “when it’s time to share the art, then there you are. Even if you’re a painter and you just put your painting on a wall and walk away, that’s an interaction that brings you out of your studio or your bedroom to understand this whole act of co-creating—which to me is a spiritual act anyway. That’s why we’re here, to really understand those rules and layers to life. How do we co-create together?
“And I think it’s so fun,” she enthuses. “I enjoy learning, even when it’s hard. I’m like, ‘Okay, this chord is killing me right now, or this phrase.... but I’ma stick with it. And then that likens to something that I might face when I go out into the world. I’m like, ‘All right, I can get through this.’”
I suggest, “When you say ‘co-creating,’ it sounds like you mean something bigger.”
“Both in the creation of our art, but also in the creation of a life,” June replies. “’Cause how can a life be something this artistic? You get to the end of it and you’re like, ‘Wow, look at what I co-created! With all these other people, with animals, with nature, with sound that’s all around....‘ All of my life has been a piece of art or a collective creation. I imagine them like books: different lives on a shelf. And you go pick one—‘Whoa! I created a pretty fun one there!’ or, ‘Oh, man, I had no hand in that....’ Close the book, next one!” she concludes, laughing as she illustrates the metaphor with her hands.
“So does that make all of your inspirations your co-creators?” I ask.
Valerie June at one of her several Newport Folk Festival appearances, with her trusty Gold Tone banjo
Photo by Tim Bugbee/Tinnitus Photography
“Yeah! Even if they’ve gone before,” says June. “I was listening to some beautiful classical music the other day, and I was like, ‘Man, I don’t know who any of these artists are; they’re all dead and gone, but I’m just enjoying it and it’s putting me in a zone that I need to be in right now.‘ So, we’re always leaving these little seeds for even those who are coming after us to be inspired by.”
Some of her current non-musical co-creators are poets and authors, such as the poet Hafez, the philosopher Audre Lorde, poet Mary Oliver, and Robin Wall Kimmerer, a Potawatomi botanist whose works include Braiding Sweetgrass: Indigenous Wisdom, Scientific Knowledge, and the Teachings of Plants, The Serviceberry: Abundance and Reciprocity in the Natural World, and Gathering Moss: A Natural and Cultural History of Mosses.
“It’s not ever complete or finished, your study of art. It’s an adventure, and it keeps getting prettier as you walk through the meadow of creating or learning new things.”
“These books are so beautiful and show the relationship of humanity with nature and the way trees speak with each other; the way moss communicates to itself,” June explains. “Those ways of being can help humans, who always think we know so much, to learn how to work together better.”
As she’s sharing, I see her glance out her window. “Right now, I just saw a muskrat go across the pond,” she continues. “It’s about this big [holds hands about three feet apart] and it digs holes in the yard. It’s having such a great time and I’m just like, ‘Okay, you are huge, and I’m walking through the yard and falling in holes because of you [laughs]. I’m just watching you live your best life!’ And then there was a blue heron that came yesterday, and I watched it eat fish.... They’re my friends!” she exclaims, with more laughter.
Valerie June believes in the power of flowers–and all living thing–as her creative collaborators.
It might seem like we’re getting a bit off subject, but it’s residents of nature like these who are important in her creative process.
I share how, in my own approach to art, I feel as though we can always access creativity and our ideals, as long as we stay receptive to experiencing and sharing in them. June agrees, but comments that sometimes her best self only wants to sit and focus: “No more information; no more downloads, please.”
An encounter with Memphis-based blues guitarist Robert Belfour, who June frequently saw perform, expanded that perspective for her. She shares about a time she went up to him after a show: “I was like, ‘Hey, I would love to work with you on some music and maybe we could co-write a song or something.’ He was like, ‘Nope! I don’t wanna do it.’ And I said, ‘Whaaat?’ And he’s like, ‘No. I do what I do, and I do not do what anybody else does; I just do what I do.’”
Sometimes, she says, “I think that’s just as much of an outlook to have with creating as anything. It’s like, ‘Okay, I’m there, I’m where I wanna be. I don’t want to be anywhere else.’”
“That’s why we’re here, to really understand those rules and layers to life. How do we co-create together?”
Part of what’s so enjoyable about speaking with June is realizing that she truly exists on her own plane. She has no pretense, and in that, doesn’t hide some of the fears that weigh on her mind at times. But she doesn’t let those define her. It’s her easy, exuberant optimism that sparks a feeling of friendship between us, without having known each other before that afternoon. What are some of her guiding principles as an artist, I wonder?
“I sit with the idea of, ‘Who am I creating this for?’” she says, “and returning to the fact that I’m doing this for me, and, as Gillian Welch said, ‘I’m gonna do it anyway even if it doesn’t pay.’ This is what I wanna do. And reflecting on that and letting that kind of be my guiding force. It’s just something that I enjoy, that I really wanna do.”
YouTube It
From there, the conversation meanders in other directions, and June even generously asks me a few questions about my own artistic beliefs. We share about trusting your gut instinct, and walking away from situations and people who don’t serve us. This reminds her of a bigger feeling.
“With everything that these times hold for us as humans,” she shares, “from the inequality that we face to the environmental change, the political climate, and all the things that could lead us to fear or negativity.... I started to think about it, and I’m like, ‘Okay, well, maybe we are fucked! Maybe the planet is going to eject us and all of the other things are gonna come true! Well, if that’s what’s gonna happen, who do I wanna be?’
“I want to go out in a way that’s sweet or kind to other people, enjoying this experience, these last moments, and building togetherness through music. I want to co-create a beautiful life even in the face of all of that. That’s what I want to do.”
