DriveToneLevel
Soft clipOverdrive
Pushes the signal into soft, warm clipping, like a valve amp turned up. Bluesy grit that still lets chords ring.
Gain · Modulation · Time · Filter · Dynamics
The Pedalboard
Thirteen guitar effects running live in your browser with the Web Audio API: harmonic distortion, melodic modulation, and echoes in time and space. Press Play riff to hear a funk riff synthesised on the spot (no recordings), or plug in through your mic or line input. Then stomp on the pedals and turn the knobs (drag up/down or use the arrow keys).
Whatever pedal you switch on last also sets how the alien cursor's trail behaves around the site.
Audio starts when you press Play riff or choose an input.
Presets:
Cursor trail: Modulation
Gain Overdrive, distortion and fuzz: harmonic grit made by clipping the waveform.
GainToneLevel
Hard clipDistortion
Harder, asymmetric clipping squares off the wave for a thick, saturated crunch. Rock rhythm and sustaining leads.
FuzzBiasLevel
FuzzPurple Fuzz
Clips almost to a square wave for a buzzy, woolly, over-the-top tone. The 60s psych sound, with a Paisley Park purple heart.
Modulation Chorus, phaser, flanger and tremolo: movement made by an LFO wobbling time, phase or volume.
RateDepthMix
Modulated delayChorus
Adds a slightly detuned, wobbling copy of your sound so one guitar shimmers like several.
RateDepthRes
6-stage all-passPhaser
Sweeps notches through the sound with a chain of all-pass filters, for that swooshing, swirling funk tone.
RateDepthRegen
Short delay + regenFlanger
A very short delay swept up and down with feedback, giving a jet-plane whoosh.
RateDepthShape
LFO volumeTremolo
Pulses the volume up and down in rhythm, from a gentle surf throb (sine) to a choppy stutter (turn Shape past halfway for square).
Time-based Delay and reverb: echoes and space.
TimeRepeatsMix
Feedback echoDelay
Repeats what you play after a set time, up to about a second. Each echo comes back a little darker and quieter.
DecayToneMix
ReverbPaisley Hall
Puts your guitar in a room or a huge hall: thousands of tiny reflections (a convolution reverb) that bloom and fade.
Filter Wah and EQ: shaping which frequencies come through.
PedalAutoQ
Band-pass sweepWah
A resonant band-pass filter swept up and down so the guitar says "wah". Set Auto to 0 and rock the Pedal knob by hand.
BassMidTreble
3-bandEQ
Three tone controls: boost or cut bass, mids and treble by up to 15 dB each.
Dynamics Compressor and volume: controlling how loud and how even.
SustainAttackLevel
SustainCompressor
Evens out loud and soft notes, adding sustain and that tight, clucky funk-rhythm snap.
Volume
Master levelVolume
Sets the level at the end of the board. Turn it down for swells and fades.
Can I put the Bandcamp or SoundCloud players through the pedals?
Not yet. Those players are embedded from Bandcamp and SoundCloud, and browsers don't let one site touch audio playing inside another site's player. So the pedals work on the riff made right here and on your own mic or line input. Signal order: Compressor → Wah → Overdrive → Distortion → Fuzz → EQ → Phaser → Flanger → Chorus → Tremolo → Delay → Reverb → Volume. Using a mic? Wear headphones to avoid feedback.