Title :
Sonar reverberation synthesis using nonstationary autoregressive modeling
Author :
Barlaud, M. ; Bruneau, J. ; Le Dard, M.
Author_Institution :
LASSY, Univ. de Nice-Sophia Antipolis, France
Abstract :
A method for generating reverberation sequences is proposed. Following the same derivation of S.G. Chamberlain (1983) and J.C. Luby (1983), AR (autoregressive) parameters are computed, AR time-varying parameters are then approximated by a linear combination of time basis functions. This method allows the generation of a reverberation time series with nonstationary spectral characteristics without combining segments according to an overlapped window scheme. The results are illustrated on surface reverberation synthesis
Keywords :
acoustic signal processing; reverberation; sonar; time series; AR time-varying parameters; nonstationary autoregressive modeling; nonstationary spectral characteristics; reverberation sequences; surface reverberation synthesis; time basis functions; time series; Autocorrelation; Character generation; Fourier transforms; Linear approximation; Oceans; Reverberation; Scattering; Sea surface; Signal processing; Sonar; Stochastic processes; White noise;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.116241
