Example image of eyePlorer eyePlorer map for 'Nominal level': Signal processing Electronic circuit Noise (electronics) Dynamic range Headroom (audio signal processing) Noise floor Signal-to-noise ratio Average Clipping (audio) Real versus nominal value Gain Loudness VU meter Decibel Sound recording and reproduction Sound reinforcement system DBV Battery (electricity) Mains Broadcasting European Broadcasting Union Peak programme meter Microphone Amplitude Composite video Video Line level Mixing console Balanced audio