A method for acoustic measuring in or along a pipeline, comprising the steps of: - establishing a broadband exciter frequency range in which an exciter signal is to be generated; - establishing interference frequencies which shall not be included in the exciter signal; - generating a precursor signal over the exciter frequency range with the omission of the interference frequencies; - coupling the precursor signal into the pipeline and receiving a precursor reflection signal reflected from the pipeline; - comparing the precursor signal with the precursor reflection signal and determining damping frequencies at which the precursor signal on the measuring path along the pipeline is damped much more than the average damping of the entire precursor signal; - generating an exciter signal over the exciter frequency range with the omission of the interference frequencies and the damping frequencies; - coupling the exciter signal into the pipeline and receiving a measuring signal reflected out of the pipeline; - evaluating the reflected measuring signal using suitable evaluation methods, wherein the exciter signal is generated as a multi-sine burst by the following steps: 11. Establishing a burst duration T B ; 12. Establishing a frequency mask of the multi-sine test signal; 13. Determining the time signal by means of inverse Fourier transform; 14. Adding zeros to the desired signal length T 0 to get a burst signal; 15. Calculating the complex amplitude spectrum of the burst by means of Fourier transform; 16. Modifying the spectrum by setting the amplitudes of the spectral components as established in step 12 with retaining the values of the phase angles as they resulted in the spectrum according to step 15; 17. Determining the time signal by means of inverse Fourier transform; 18. Restoring the pulse pause by setting all related signal components to zero; 19. Jumping back to step 15 and repeating the steps until the spectral mask and the pulse pause are complied with an accuracy to be specified. - establishing a broadband exciter frequency range in which an exciter signal is to be generated; - establishing interference frequencies which shall not be included in the exciter signal; - generating a precursor signal over the exciter frequency range with the omission of the interference frequencies; - coupling the precursor signal into the pipeline and receiving a precursor reflection signal reflected from the pipeline; - comparing the precursor signal with the precursor reflection signal and determining damping frequencies at which the precursor signal on the measuring path along the pipeline is damped much more than the average damping of the entire precursor signal; - generating an exciter signal over the exciter frequency range with the omission of the interference frequencies and the damping frequencies; - coupling the exciter signal into the pipeline and receiving a measuring signal reflected out of the pipeline; - evaluating the reflected measuring signal using suitable evaluation methods, 11. Establishing a burst duration T B ; 12. Establishing a frequency mask of the multi-sine test signal; 13. Determining the time signal by means of inverse Fourier transform; 14. Adding zeros to the desired signal length T 0 to get a burst signal; 15. Calculating the complex amplitude spectrum of the burst by means of Fourier transform; 16. Modifying the spectrum by setting the amplitudes of the spectral components as established in step 12 with retaining the values of the phase angles as they resulted in the spectrum according to step 15; 17. Determining the time signal by means of inverse Fourier transform; 18. Restoring the pulse pause by setting all related signal components to zero; 19. Jumping back to step 15 and repeating the steps until the spectral mask and the pulse pause are complied with an accuracy to be specified. <EOS>