Pink Noise for use as relief for Tinnitus, through audio masking. Also popular for concentration, meditation and relaxation. Often used to aid in calming the system for sleep.
These files are pink noise waves, which by character are a lower frequency, duller sound compared to white noise. A high cut filter has been applied at the target frequencies, with a steep slope fall-off on these audio files.

This collection is created using generated pink noise across the complete sound range but the specified frequency and above have been filtered out. Preview samples below.

Listen at a low volume, remember you are not 'blasting out' or 'covering up' the tinnitus. There will be a 'mix-point' (often very quiet) where the audio can possibly cancel out the ringing in your ears. It's worth trying a variety of sounds to see what suits you best.