hangjelző angolul

sounder▼◼◼◼noun
[UK: ˈsaʊnd.ə(r)] [US: ˈsaʊnd.ər]

geophone▼noun
[UK: dʒˌiːəʊfˈəʊn] [US: dʒˌiːoʊfˈoʊn]