Hardness (r = 0.851), loudness (r = 0.711) and crispness (r = 0.705) of biscuits strongly positively correlated with the number of AE events (Fig. 3; Table 5). A strong positive correlation was also observed between sensory parameters (loudness [r = 0.708], hardness [r = 0.832]) and the acoustic energy as well as the duration of AE event (loudness [r = 0.769], hardness [r = 0.687]) (Table 5). It seems, however, that among the acoustic properties, the number of AE events may determine the perception of biscuits texture, the evidence of which is the length of AE events number vector (Fig. 3), as well as strong positive correlation with all sensory descriptors (Table 5).