. Cheng et al. (2007) who studied the crispness of roasted almond and they found that for each major force drop a group of acoustic events seemed to happen and many sound events did not appear to be directly related to drops in force and it do not have to be one-to-one, as the sound emission is the result of a sudden release of energy, while the force curve is a reflection of the energy applied to, or released from the sample.