FOUR-TERMINAL NETWORK FREQUENCY CHARACTERISTIC ANALYZER Russian patent published in 2005 - IPC

Abstract RU 2253873 C2

FIELD: measurement technology.

SUBSTANCE: analyzer can be used for measuring level of frequency distortions introduced by audio channel. Analyzer has two spectrum analyzers which are used to determine signal spectra at output and input of tested four-terminal network. Input and output signal spectra are subject to normalization and are introduced into subtraction unit and later to unit for determining normalized signals difference module. Signal from unit for determining module is sent to integrator to find end value, which characterizes area of frequency distortions introduced by four-terminal network. According to another version of analyzer the module is substituted by squarer. Analysis of frequency characteristics can be performed without turning four-terminal network into special measuring mode.

EFFECT: improved truth of information; increased precision of measurement.

2 cl, 3 dwg

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RU 2 253 873 C2

Authors

Avanesjan G.R.

Dates

2005-06-10Published

2004-02-04Filed