FIELD: acoustics.
SUBSTANCE: acoustoelectric transducer comprises a magnetic system of an annular permanent magnet with axial magnetisation and a core, an annular coil with a centring diaphragm and a diffuser, wherein the coil is placed in the gap between the core and the inner surface of the hole of the annular permanent magnet. Between the coil and the diffuser there is a series of diaphragms with resonance frequencies in the area of the maximum spectrum of the useful signal, besides, adjacent diaphragms are connected by means of springs.
EFFECT: high signal-to-noise ratio at the stage of acoustoelectric conversion.
1 cl, 6 dwg
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