I too had tinnitus for 20 years, way before cancer, and was worsened from treatment, as did my hearing, but I never went for any tests since I'm too busy with other matters. Anyway, I use a sleep machine, "sleep bug" on ipad apps, as Bart describes as "white noise" to block out the cricket sounds. Bedsides the sleep machine, a fan or air conditioner works well too. The noise is not bad in the day with all the other noises, distractions, but is more heard in the night when it's quiet. I'm kind of used to it.

10/09 T1N2bM0 Tonsil
11/09 Taxo Cisp 5-FU, 6 Months Hosp
01/11 35 IMRT 70Gy 7 Wks
06/11 30 HBO
08/11 RND PNI
06/12 SND PNI LVI
08/12 RND Pec Flap IORT 12 Gy
10/12 25 IMRT 50Gy 6 Wks Taxo Erbitux
10/13 SND
10/13 TBO/Angiograph
10/13 RND Carotid Remove IORT 10Gy PNI
12/13 25 Protons 50Gy 6 Wks Carbo
11/14 All Teeth Extract 30 HBO
03/15 Sequestromy Buccal Flap ORN
09/16 Mandibulectomy Fib Flap Sternotomy
04/17 Regraft hypergranulation Donor Site
06/17 Heart Attack Stent
02/19 Finally Cancer Free Took 10 yrs