FIELD: technology for measuring maximally possible legibility of speech in extremely unfavorable conditions, in noise, with low signal/noise ratios and is meant, primarily, for determining protection of objects in case of speech information loss through several leaking channels simultaneously.
SUBSTANCE: device contains generator of acoustic testing signal in form of series of N frequencies with pauses between frequencies, emitter, acoustic signal receiver, N-band device for measuring signal/noise rations and device for computing legibility. In addition, in parallel to receiver of acoustic signal K receivers of other signal types, formed by emission of acoustic testing signal, are mounted, for example, for detecting magnetic, electronic, vibro-acoustic types, while clock generator has additional outputs for organization of K+1 cycles of generator and synchronous control over switch of receivers and selection device.
EFFECT: increased trustworthiness of speech legibility measurements.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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RU2715176C1 |
