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We address an interesting question in the present paper that whether theacoustic gravity can be applied as a tool to the study of regular black holes.For this purpose, we construct a general acoustic regular black hole in thespherically symmetric fluid, where its regularity is verified from theperspective of finiteness of curvature invariants and completeness ofgeodesics. In particular, we find that the acoustic interval not only lookslike a line element of a conformally related black hole in which the fluiddensity can be regarded as a conformal factor, but also gives rise to anon-vanishing partition function which coincides with that of a conformallyrelated black hole. As an application, we provide a specific acoustic regularblack hole model, investigate its energy conditions and compute its quasinormalmodes. We note that the strong energy condition of our model is violatedcompletely outside the horizon of the model but remains valid in some regionsinside the horizon, which may give a new insight into the relation between theregularity and strong energy condition. Moreover, we analyze the oscillatingand damping features of our model when it is perturbed.

Acoustic regular black hole in fluid and its similarity and diversity to a conformally related black hole