Phase modulation of acoustic transducers

TitlePhase modulation of acoustic transducers
Publication TypeConference Paper
Year of Publication1993
AuthorsYedlin, M. J., and E. L. Majer
Conference NameElectrical and Computer Engineering, 1993. Canadian Conference on
Pagination270 -273 vol.1
Date Publishedsep.
Keywordsacoustic signal processing, acoustic transducers, Barker envelope, chirp correlation envelope, codes, complementary Barker code, crosscorrelation, frequency modulation, impulse response deconvolution, phase modulation, phase modulation code, phase shift keying, PSK, pulse compression, recorded signals, reference signals envelope, sidelobes, transient response

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


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