The acoustical parameters for binary mixture of two industrial importance liquid namely di-isopropyl ether (DIPE) and xylene ( mixed isomer) has been studied at three different frequencies ( 1MHz, 3MHz and 5MHz) and at constant temperature 303K. The measured data of density (r) and ultrasonic velocity (C) in binary mixture of DIPE and xylene are used to compute isentropic compressibility (b), intermolecular free length (L_f) and acoustic impendence (Z) and their excess values from view point of the importance and applicability in asserting the interactions. In this binary system, the interaction parameter values have been found to be positive and their excess values are negative over entire composition range of DIPE which indicates the specific interactions between unlike molecule. With increase of frequency the extent of interaction becomes weak due to the thermal relaxation of the component molecules.