I have different sounds each day. Sometimes it just takes 10 minutes of sleep to change the tone. When I come home from work and I take a little nap, (the ride take about 45 minutes), the tone change. My most common tones are a hiss, cicadas and something like an ultrasound high pitch. Sometimes the sound is higher and the nap make it better, sometimes it works on reverse. My tinnitus is worst in the morning, and some days I wake up and I have a kind of sound, but after 2 hours of being wake, it changes for better. It´s worst when I am sitting and very somatic.