Polarized Rayleigh-Brillouin spectra of 1-octanol/n-octane solutions at different mole fractions have been recorded in the temperature range of 5-70 degreesC by using a 90degrees scattering configuration. Hypersonic velocities and acoustic attenuations have been calculated by means of a fitting procedure with suitable Lorentzian functions. The relaxation of the liquid structure revealed by viscous and thermal energy losses has been interpreted and discussed in terms of a local H-bond network and conformational modifications. The thermal behavior of macroscopic parameters such as number density and shear viscosity has also been studied in the same temperature range in an effort to better interpret the observed relaxation processes and the distribution of their relaxation times.