Pink Noise

Pink noise rolls off at 3 dB per octave, giving equal energy in each octave band. That matches how the auditory system groups frequencies, so pink noise sounds balanced rather than bright.

It is also close to the long-term spectrum of many natural sounds - rainfall, distant water, wind - which is one reason it feels familiar rather than synthetic.

Generated; also approximated by countless natural and physical processes that follow a 1/f distribution.

Commonly heard: Loudspeaker and room calibration, sleep audio, hearing research.

Stationary, patternless, spectrally tilted downward.

Frequency profile: Power falls as 1/f - about 3 dB down per octave.

• Balance
• Naturalness
• Steadiness

Creative work

The standard reference signal for tuning a mix or a room.

Relaxation

Usually preferred over white noise for long listening.

Meditation

Neutral and continuous.

Focus

Effective masking with less high-frequency fatigue.

Sleep

A common choice. Small studies have explored pink noise bursts timed to slow-wave sleep, but findings are preliminary and not a basis for health claims.

Paste any of these into the Studio, or adapt them. They are written to work with ElevenLabs Music and most other text-to-music tools.

• Warm pink noise bed with slow low-pass movement and a distant sustained pad
• Ambient sleep track: pink noise, soft sub-bass pulse, no melody, very slow evolution

• 1/f behaviour turns up in heartbeats, traffic flow, river levels and loudness fluctuations in music.
• Audio engineers calibrate systems with pink noise precisely because it puts equal energy in each octave band the analyser measures.

• Acoustic stimulation during sleep and memory (small-sample studies) - Frontiers in Human Neuroscience

Sources are listed so you can check them. Where evidence is preliminary or mixed, we say so on the page rather than in a footnote.

• White NoiseEqual energy per hertz - the brightest of the noise colours, and the most clinical.
• Brown NoiseA deep, low-tilted rumble - the darkest and heaviest of the common noise colours.
• Forest RainSteady rainfall filtered through a canopy - broadband, soft-edged, endlessly varied.