In the series of background noise generators - replenishment. Yes, even what. On the
myNoise.net website,
you can generate a suitable background in a convenient interface via the Web Audio API: sound of a fire, wind, waterfall, rain, white noise, various industrial noises, etc. Everything is completely free and works even in mobile browsers.

The sound is generated not purely by the algorithm, but from the samples, so that before starting to play you will have to wait a bit for the sample to load. But the user has the opportunity to fully adjust the frequency characteristics of the generated noise in ten frequency ranges.

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You can then save the result to an MP3 file for later listening.
The generator has been tested in almost all modern browsers, but the best sound quality is achieved in Chrome or Safari on the desktop, Mobile Safari (iOS) and Firefox (Android) on mobile platforms. It is desirable to initially
calibrate the sound for a specific audio equipment.
Although the service works on a mobile platform anyway, the developer is looking for partners to create a separate mobile application.
Such generators are ideal for listening in the office (with headphones), during meditation, rest, to disguise city noise, sleep children, sound therapy, and so on.