Well firstly just because you clean your ears everyday does not make them healthy. Indeed many methods of cleaning the ear are actually very possibly harmful to your hearing and damage to the eardrums can often cause unexplained noises including a taping (or ticking) and whistling. I too would recommend a quick trip to the doctors and a hearing check just in case they are damaged in any way, it's much better to catch it early than late particularly if you were to maintain cleaning whilst they're damaged.
There are also a number of psychological disorders that result in hearing noises and/or voices. They are not negative and not necessarily a bad thing, indeed many people with such disorders describe the voices as a positive aspect of their life, providing inspiration to aspiring artists for example. Many people live with such sounds without needing to seek diagnosis but if they bother you or become problematic a trip to the doctors can easily find if you have such a disorder.
Beyond the mundane world there are cases of spirits reaching out to people however you would typically sense its presence rather than simply hearing it. Ultimately a spirit can easily be mistaken for a mental health disorder and vice versa hence the necessity to rule out mental health, s spirits can not easily be tested for scientifically. If you suspect it's a spirit then I'd recommend reaching out to them and asking what they want, if it becomes problematic try a banishing spell.