25 minute timer with white noise
White noise is an even hiss across every frequency the ear can pick up, something like a detuned radio or a strong fan. On this page it is generated by your browser from scratch, so there is no audio file to fetch and nothing that ever runs out or restarts. It plays for as long as the timer runs, through a 25-minute focus block, a 5-minute break, and the 15-minute long break after 4 rounds.
The point of white noise is masking. It fills in the gaps that a voice, a keyboard, or traffic would otherwise punch through, so the room sounds flat instead of busy. People who work in open offices, coffee shops, or apartments with thin walls tend to reach for it first.
White noise is the brightest of the three noise colors, and some listeners find the high end tiring after an hour or two. If your ears feel scratchy by the second pomodoro, the pink noise timer keeps the masking with less hiss, and brown noise goes lower still. If you already have a quiet room, skip the noise entirely and use the silent timer instead.
Questions
what does white noise sound like
A steady hiss, like a fan on high, static between radio stations, or air escaping a vent. Every frequency plays at the same level, which is why it sounds bright and slightly sharp compared with pink or brown noise.
is white noise good for studying
It helps some people by hiding sudden sounds that break concentration. The research on noise and study performance is mixed and depends on the person and the task. Try one 25-minute block with it and one without, and compare how often you looked up.
does the white noise here download a file or use data
No. Your browser generates the noise with its own audio engine, so nothing is downloaded and nothing streams. It works offline once the page has loaded and uses no more data than the page itself.