When eating, specific sounds are generated depending on the food, thus strong associations between food and mastication-sound exist. In the present study, we investigated how the sound of chewing affects the perceived texture and pleasantness of food. Mastication sounds were recorded prior to the experiment for each subject while chewing several foods. These artificial mastication sounds were then presented to subjects during the experiment while they chewed several foods. The onset of the artificial sound was carefully timed with the onset of mastication. Subjects estimated the texture of each food, eaten with added mastication sounds, and reported several components of texture using visual analog scales. As controls, subjects estimated textures of foods alone (without additional sounds) and mastication sounds alone (without actually chewing). The results show that added mastication sound affects the perceived texture of food, but the magnitude of the effects varied among participants. Moreover, the results indicate that added mastication sound changes the pleasantness of foods. Together, it appears that we can control the perceived texture and pleasantness of food by adding artificially-created mastication sound.