The vibrational-translational relaxation time of the nu(3) state of ozone was deduced from the phase shift of the photoacoustic detector signal relative to the amplitude-modulated radiation of the CO2 laser used for excitation of O-3. A special photoacoustic cell with a third electrode is used to eliminate an instrumentation phase shift caused by inertia of the microphone membrane. A three-level kinetic model of O-3 is presented and used to fit the experimental and calculated phase shifts to determine the vibrational relaxation rate coefficients for pure O-3 and binary mixtures of O-3 with O-2, N-2, and noble gases He, Ne, Ar, Kr, and Xe. These results are presented and compared with experimental data obtained for O-3, O-3-O-2, and O-3-N-2 by fluorescence and double resonance techniques. Experimental data for nu(3) state relaxation in binary mixtures with all noble atoms have been obtained for the first time. These new results are compared with the simplest model of interaction. Thus we obtain a very good agreement for the decrease of constants with the increase of the colliding partner mass.