Application of cepstrum techniques to the measurement of the normal incident sound absorption coefficient of road surfaces in-situ

Author

Jongens, A.W.D.

Author_Institution

Central Acoustics Lab., Cape Town Univ., Rondebosch, South Africa

fYear

1993

fDate

34187

Firstpage

25

Lastpage

31

Abstract

The measurement of the absorption coefficient of a surface is described whereby the surface is insonified with a suitable sound signal and the echo is extracted from the total signal received by a microphone placed close to the surface by means of cepstral extraction, or homomorphic deconvolution. Although the principle is relatively simple certain practical problems are described which influence the accuracy of the results

Keywords

acoustic noise measurement; acoustic signal processing; cepstral analysis; microphones; road traffic; accuracy; cepstral extraction; cepstrum techniques; echo; homomorphic deconvolution; microphone; normal incident sound absorption coefficient; road surfaces; road traffic noise; sound signal; Absorption; Acoustic measurements; Acoustic noise; Building materials; Cepstrum; Cities and towns; Laboratories; Loudspeakers; Pollution measurement; Roads;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Signal Processing, 1993., Proceedings of the 1993 IEEE South African Symposium on

Conference_Location

Jan Smuts Airport

Print_ISBN

0-7803-1292-9

Type

conf

DOI

10.1109/COMSIG.1993.365879

Filename

365879