Fourier analyzer

Fourier analyzer

[‚fu̇r·ē‚ā ′an·ə‚līz·ər] (engineering) A digital spectrum analyzer that provides push-button or other switch selection of averaging, coherence function, correlation, power spectrum, and other mathematical operations involved in calculating Fourier transforms of time-varying signal voltages for such applications as identification of underwater sounds, vibration analysis, oil prospecting, and brain-wave analysis.