Example image of eyePlorer eyePlorer map for 'Spectrum analyzer': Acoustics Electricity Optics Waveform Spectral density Analog computer Band-pass filter Digital Local oscillator Superheterodyne receiver Tuner Discrete Fourier transform Frequency spectrum Fast Fourier transform Signal-to-noise ratio Nyquist frequency Analog-to-digital converter Amplifier Intermodulation Total harmonic distortion Aaronia Johnson–Nyquist noise Noise floor Sound Spectrogram Acoustic phonetics Audiology Bell Labs Digital signal processing Speech and language pathology Distortion Frequency response Noise (electronics) Telecommunication Electromagnetic compatibility Real Time Analyzer Vector signal analyzer Anritsu Comb generator Electrical measurements AirMagnet Two from the Vault Kish cypher Network analyzer (electrical) Agilent Technologies Electronic test equipment SIGSALY Frequency domain Measuring receiver Microwave power meter