| 摘要 |
The invention relates to a method for processing water-borne sound signals, in particular amplitude-modulated broadband noises, which are radiated or transmitted from vehicles. The broadband noises are received in a directionally selective manner as acoustic signals by means of a sonar system (2) and subjected to a spectral analysis (10), in particular a DEMON analysis (10). From the acoustic signals (8), the spectral analysis (10) then generates corresponding frequency spectra (18). At least one local maximum (36) is determined within the frequency spectrum (18), said local maxima (36) corresponding to individual frequency lines (38). On the basis of the determined frequency lines (18), a synthetic spectrum (42) is generated, which is subjected to a spectral synthesis (44), in particular a DEMON synthesis (44), which generates an associated synthetic time signal (50). From this time signal (50) and a carrier signal (56), a synthetic amplitude-modulated signal (58) corresponding to the spectral synthesis (44) is generated, said synthetic amplitude-modulated signal being output as an acoustic signal (58) to a user. The invention further relates to a device for performing the method according to the invention. |
