PinkFilterKt
This filter generates pink noise values from white noise values (for example RNG floats in range [0:1)). Values that come out from the filter can be input for Android's AudioTrack, it will produce sound that is audio pink noise( -3dB / octave). To use it just add Kotlin code to your project and feed it with white noise.
You can check it out on Google Play, it is used in app: Noise Maker