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The time-domain cross-correlation of incoherent and random noise recorded by a series of passive sensors contains the impulse response of the medium between these sensors. By using noise generated by a can of compressed air sprayed on the surface of a plexiglass plate, we are able to reconstruct not only the time of flight but the whole waveforms between the sensors. From the reconstruction of the direct A 0 and S 0 waves, we derive the dispersion curves of the flexural waves, thus estimatingdoi:10.1121/1.2932814 fatcat:sev4i2xamjca3aacr32mdozxz4