It's a lovely, somewhat archaic word that evokes a sense of gentle and melodic sounds.
Here are some examples of how it's used:
* "The sound of the wind chimes filled the air with a gentle tintinnabulation."
* "The church bells rang out, their tintinnabulation echoing through the valley."
* "The sleigh bells jingled, their cheerful tintinnabulation announcing the arrival of Santa Claus."