Waterfall Nature Sounds. Waterfall: The rush of water is constant and steady. Everyone enjoys the sounds from a great waterfall, roaring and splashing. The noise contains mid and high range tones which are amazingly relaxing. This recording is a good sleep aid and is well-suited for those with ringing in the ears. A great soothing and relaxing sleep aid. Put on your favorite set of headphones or earbuds, sit back and relax in your recliner or sofa, and let time pass in your state of total relaxation.