Almost all people get the occasional accustic perception in the hear, for most it seems to be a high whistling-kind of sound. It last for one or two minutes, and then fades out again, often it is just one ear. It should not happen more often than every couple of weeks, I think. Also, as I already said, almost all people start to have some minor accoustic perceptions if being exposed to total silence.

This may be - my assumption - due to some physiological variable temporarily changing, like you can also get a second of swindle when you raise too quickly and for a moment your blood pressure goes up and down. Omne cannot say it often enough: tinnitus can and often is caused by accouzstic excessive stimuli causing neurla damage in the ear's inside, but it can be caused by so many different factors as well. It can stay for just a short while, minutes, or just days, then it will go away usually. If it last for longer than let's say 2, 3 or 4 months, then the prognosis becomes less optimistic and the tinnitus may become chronic.

Just for the record, I do not want to boast here, and I am no medical doctor, but we got a lecture on it in psychosomatics lessons when I studied, because tinnitus can be caused by psychological and psychosomatic factors, or in the attempt to learn how to deal with it people with tinnitus find their way into psychotherapeutical coping groups. Also, I base on stuff that I learned around 20 years ago, so research and medicine improving it'S knowledge may have gone beyond what I believe to know.

Oh, and I get the occasional 1-2 minutes "tinnitus" every couple of weeks myself, too, mostly in the same ear, always. Seen that way I am a typical representative of the numerically dominant "me too!"-group. I link it to stress and my blood pressure issues. Focussed relaxation like done in meditation has a positive effect in shortening the time.