Phase modulation of acoustic transducers

Author

Yedlin, Matthew J. ; Majer, Ernie L.

Author_Institution

Dept. of Electr. Eng., British Columbia Univ., Vancouver, BC, Canada

fYear

1993

fDate

14-17 Sep 1993

Firstpage

270

Abstract

A comparison of phase modulation and frequency modulation as applied to simple acoustic transducers is presented. We choose the complementary Barker code as the phase modulation code. To obtain optimal results an impulse response deconvolution is required. The final envelopes of the crosscorrelation of the reference signals and the recorded signals demonstrate the usefulness of the complementary Barker code. Whereas the chirp correlation envelope has two significant principal sidelobes, the Barker envelope has no such sidelobes

Keywords

acoustic signal processing; acoustic transducers; codes; frequency modulation; phase shift keying; transient response; Barker envelope; PSK; acoustic transducers; chirp correlation envelope; complementary Barker code; crosscorrelation; frequency modulation; impulse response deconvolution; phase modulation; phase modulation code; pulse compression; recorded signals; reference signals envelope; sidelobes; Acoustic transducers; Autocorrelation; Chirp modulation; Deconvolution; Frequency modulation; Loudspeakers; Phase modulation; Phase shift keying; Synthetic aperture radar; Transceivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 1993. Canadian Conference on

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-2416-1

Type

conf

DOI

10.1109/CCECE.1993.332308

Filename

332308