Method for acoustically measuring material properties of a test piece at high temperatures, comprising the steps of: a. heating the test piece to within a testing temperature range; b. performing a background measurement within said testing temperature range by capturing a vibrational signal from the test piece within a calibration period, thereby obtaining a noise signal; c. performing an acoustic measurement on said test piece within said testing temperature range and within a testing period by: c1. imparting a vibrational excitation onto the test piece; c2. capturing a vibrational signal of the test piece within the testing period, thereby obtaining a vibrational response signal to said vibrational excitation, and d. obtaining the material properties of the test piece by analysing the vibrational response signal, thereby taking into account the noise signal, wherein the vibrational excitation of step c1 is mechanically induced onto the test piece, whereby an impact system comprising a ballistic impactor and an impactor actuator is used, whereby the impact actuator is configured to give an impulse to said ballistic impactor, and using said ballistic impactor for imparting a vibrational excitation onto the test piece, whereby in the acoustic measurement step c, a measurement impulse is provided to the ballistic impactor which imparts a vibrational excitation onto the test piece in step c1, and whereby in the background measurement step b, a background impulse is provided to the ballistic impactor which does not impart a vibrational excitation onto the test piece, whereby the noise signal comprises noise arising from the impactor actuator and the ballistic impactor. a. heating the test piece to within a testing temperature range; b. performing a background measurement within said testing temperature range by capturing a vibrational signal from the test piece within a calibration period, thereby obtaining a noise signal; c. performing an acoustic measurement on said test piece within said testing temperature range and within a testing period by: c1. imparting a vibrational excitation onto the test piece; c2. capturing a vibrational signal of the test piece within the testing period, thereby obtaining a vibrational response signal to said vibrational excitation, and c1. imparting a vibrational excitation onto the test piece; c2. capturing a vibrational signal of the test piece within the testing period, thereby obtaining a vibrational response signal to said vibrational excitation, and d. obtaining the material properties of the test piece by analysing the vibrational response signal, thereby taking into account the noise signal, wherein the vibrational excitation of step c1 is mechanically induced onto the test piece, whereby an impact system comprising a ballistic impactor and an impactor actuator is used, whereby the impact actuator is configured to give an impulse to said ballistic impactor, and using said ballistic impactor for imparting a vibrational excitation onto the test piece, whereby in the acoustic measurement step c, a measurement impulse is provided to the ballistic impactor which imparts a vibrational excitation onto the test piece in step c1, and whereby in the background measurement step b, a background impulse is provided to the ballistic impactor which does not impart a vibrational excitation onto the test piece, whereby the noise signal comprises noise arising from the impactor actuator and the ballistic impactor.