Full-spectrum static with equal energy at every frequency - the classic masking noise.

Equal energy per octave - a warmer, more natural noise that's gentle on the ears.

Deep, rumbling noise with strong bass and steeply falling highs, like a distant waterfall.

Rising energy with frequency - a bright, airy hiss useful for high-frequency masking.

Sharply rising high-frequency emphasis - extremely bright, often used for tinnitus relief.

Psychoacoustically flat noise, perceptually balanced across the entire audible spectrum.

Midrange-centered noise reminiscent of natural background ambience, like distant nature.

Mostly silence punctuated by sparse random energy - near-total quiet with occasional texture.

Gentle, steady rainfall with a soft high-frequency hiss and scattered droplet taps.

Intense, pounding rainfall with a dense roar of droplets and a deep wet rumble.

Heavy rain accompanied by rolling, low-frequency thunder rumbling in the distance.

Steady wind with slow, sweeping gusts through open air.

Violent, roaring wind with deep howling gusts and distant debris noise.

Slow, deep ocean swells washing in and out with airy foam.

Rhythmic waves breaking on a shoreline with rolling foam and the occasional bigger crash.

Continuous flowing water over rocks with bright bubbling babble.

A powerful, continuous cascade of falling water with fine misty spray.

A calm woodland with wind rustling through leaves and distant birdsong.

A dense, humid jungle teeming with insects, birds, and distant calls.

A peaceful chorus of birdsong with a soft natural backdrop.

A warm summer night filled with the steady rhythmic chirp of crickets.

A cozy crackling campfire with a warm low roar and frequent pops.

Howling, muffled wind through a blizzard with occasional heavy gusts.

Deep, resonant cave air with the slow echo of distant water drips.

A cozy café with murmured conversation, clinking cups, and the occasional espresso hiss.

A quiet study hall with soft ventilation hum and the occasional turning page.

An open-plan office with keyboard clatter, distant chatter, and HVAC hum.

The steady drone of jet engines and pressurized cabin air at cruising altitude.

Rhythmic clacking wheels on rails with a steady rolling rumble.

An underground subway car rumbling through tunnels with echoing rail screech.

Distant urban hum with occasional horns and the murmur of a busy street below.

Continuous high-speed traffic flow with the steady whoosh of passing cars.

Busy city traffic with stop-and-go engines, horns, and idling vehicles.

A large crowd of overlapping conversations with waves of laughter and movement.

A massive stadium crowd with rolling cheers, chants, and rhythmic drums.

A school hallway between classes with chatter, footsteps, and a distant bell.

A warm dining room with chatter, clinking cutlery, and soft laughter.

A simple electric fan with rhythmic blade whoosh and a low motor hum.

A steady air conditioning unit with compressor drone and cool airflow hiss.

A powerful vacuum cleaner with a high motor whine and rushing air.

A washing machine cycling through wash with sloshing water and rhythmic drum motion.

A clothes dryer tumbling with a steady drum hum and rhythmic thumps.

A car engine idling with a low rhythmic rumble and subtle exhaust pulsing.

The powerful roar of a jet engine at cruise with a high turbine whine.

A deep diesel ship engine throbbing steadily with hull and water resonance.

A pure oscillator tone with adjustable waveform, frequency, harmonics, and envelope.

Deep, dreamless sleep and restorative healing.

Deep meditation, REM sleep, and creative insight.

Relaxed, calm focus and light meditation.

Active concentration, alertness, and problem solving.

High-level cognitive processing and peak focus.

Manually set base and beat frequencies.

A rhythmically pulsed tone for brainwave entrainment that works without headphones.

The lowest tone, associated with pain relief and a sense of security.

Associated with tissue and energy-field repair.

Associated with releasing guilt and fear.

Associated with facilitating change and undoing situations.

Known as the 'love frequency', associated with transformation and renewal.

Associated with relationships and harmonious connection.

Associated with problem solving and self-expression.

Associated with spiritual order and intuition.

Associated with oneness and higher consciousness.