Biscuits with 64.8% of fat participation and 9.3% of inulin participation(C5) as well as 18.5% of inulin partici- pation(C6) were characterized by significantly lower number of acoustic events and acoustic energy than the CA ones. Significant differences in sound amplitude between biscuits with 9.3% of inulin participation(C5) and biscuits with 18.5% of inulin participation(C6) were observed(Table 3)