Continual or continuous:
Continual: something is continual if it is repeated frequently, or happens often but with intervals in between.
Continuous: something is continuous if it is constant or uninterrupted.
‘The continual references to crime and violence in the press give rise to increased public anxiety about safety outside the home.’
‘After the drumming from next door had been continuous for sixteen hours, Peter went round there with a large hammer and smashed the drum kit to smithereens.’