SU559467A1 - Microphone - Google Patents

Description

The acoustic vibrations acting on the membrane 1 through the link 4 deform the piezot element 3, which transforms the mechanical vibrations into electrical ones. To give the microphone a directional sensitivity characteristic in the section plane of FIG. 1, to protect it from interfering acoustic signals, the microphone body is covered with an insulating material 1.

When such a microphone is used in an acoustic flaw detector, rejection of production is reduced, the locations of defects are more accurately marked, the design is simplified, the number of flaw detector channels is reduced.

Claims (3)

Invention Formula I A microphone containing a corp, membrane, and transducer, from which it is valid. the purpose of the linear pattern of zhstaka directivity, the membrane is made in the form of a part of a cylindrical surface with a radius, a wavelength of acoustic oscillations, suspended on flexible straps, the ends of which are attached to the Kopiyce laktafron, and rigidly connected with the transducer, which is, for example, in the element of the element. Sources of information taken into account during examination: . Patent of Germany N 1187395, cl. 42 to 46/05, 1968. 2. Author's certificate} No. 238214, M. Кл. G 01 N 33/38, 1972. 3. Shzhu | Shn A.A., Polshauk A.I. New method quality control of veneering furniture. Survey information, series: VJH. issue 2, ShchTI, M., 1970. Aa five ; 26 1 % m t (roF. 5-L ; i / ifiwp membrane 3