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Modeling the Acoustoelectric Effect in a Telephone Using COMSOL Multiphysics

2021; Springer Science+Business Media; Linguagem: Inglês

10.1007/978-981-16-1483-5_8

1865-0937

Oksana Lukmanova, Anatoly Horev,

Geotechnical and Geomechanical Engineering

Telephones are one of the most common telecommunication devices in the protected premises. The telephone includes various acoustic transducers (speaker, microphone), as a result of which these devices have a microphone effect and can cause leakage of speech information into the telephone network. This paper describes the model of the piezoelectric speaker of the Gigaset DA210 telephone connected to the buzzer circuit using simulations in COMSOL Multiphysics. The piezoelectric (Lead Zirconate Titanate 8) actuator is investigated, a comparison based on the obtained results of acoustic transducers is made with the parameters specified by the piezoelectric speaker designers. The paper studies the characteristics of this piezoelectric speaker as a sensor under the influence of an acoustic field, as a result of which a technical channel of speech information leakage channel. Based on the data obtained, the speech intelligibility assessment in the telephone network is made using the developed model. The results can be used in the development of secure telephones and the educational process in the training of specialists in the area of information security.