White noise is useful because it is broadband and easy to loop, but small choices like brightness, stereo width, and fade shape decide whether it feels calming, clinical, or fatiguing. Use the prompts on this page as starting points, then specify your target spectrum (bright vs warm), whether you need mono or wide stereo, and how smooth the attack and tail should be for looping or crossfades.
Choose the right spectrum for the job
Not all white noise should be equally bright. For sleep or long listening, a softened top end often feels smoother. For masking speech, a little more mid and high energy can be effective, but harsh hiss can become distracting.
- For sleep: ask for warm tone, reduced harsh highs, gentle high-cut
- For speech masking: ask for brighter presence, but avoid whistling tones
- For room tone fill: match the brightness to your recorded ambience
Decide on mono vs stereo width
Stereo width changes how the bed feels in headphones and how it sits under dialogue. Wide stereo can feel spacious but may cause phasey movement when summed to mono. Mono is predictable and easier to layer under VO.
- For VO and podcasts: request clean mono, centered image, stable level
- For headphone sleep audio: request wide stereo with minimal phase wobble
- For video ambience: request moderate width so it blends across cuts
Make loops invisible with fades
Clicks usually come from hard edges or fast level changes at loop points. Prompts that request smooth attack and tail help, and a slightly longer bed can make looping less obvious.
- Ask for smooth fade in and fade out, no clicks, no sudden level jumps
- If looping, request steady noise with minimal modulation or pumping
- Use 10s or 20s when you want less noticeable repetition
Avoid common white noise pitfalls
Bad noise beds often have tonal whistles, fluttery modulation, or overly sharp highs that fatigue listeners. Keep the prompt specific about what to exclude, especially when the audio is meant to run for minutes or hours.
- Avoid: tonal ringing, whines, chirps, or oscillating filter movement
- Avoid: excessive high-end fizz that becomes harsh at normal volume
- Avoid: audible texture jumps that reveal the loop point
