3rd French conference on acoustics
J. Phys. IV France 04 (1994) C5-339-C5-342
On the generation of bionic pulses with conventional piezoelectric transducers by proper design of the input driving functionP. COBO-PARRA and R. CARBÓ-FITÉ
Instituto de Acústica (C.S.I.C.), Serrano 144, 28006 Madrid, Spain
This paper concerns with the capacity of piezoelectric transducers to generate bionic pulses, by proper design of the input driving function which equalizes their transfer function. Firstly, the transfer function is measured by performing the transducer in the pinger mode. The measured transfer function, together with the parameters of the desired bionic pulse (i.e. central frequency, stretching and chirp), are the inputs to a program to calculate the voltage function which should drive the transducer. Finally, the transducer is driven with the calculated voltage function, synthesized by an arbitrary waveform generator, and the transmitted acoustic pulse is measured. Theoretical bionic pulses and experimental pulses synthesized by this method show an excellent agreement.
© EDP Sciences 1994