The minutes of the testimony of a witness, expert or party shall be read out, submitted to him, so that he may examine them or, where they are recorded by technical means, played back to him, unless he waives this right. It shall be noted in the minutes that this formality has been carried out and that the person who gave the testimony approved the minutes. If his approval is not given, his objections shall be noted. It is not necessary to play back the minutes or to obtain approval of them if the testimony has been recorded verbatim and directly using technical means.