Audiovisual Dictionary Get to know the terms of the audiovisual ecosystem ALL0-9ABCDEFGHIJKLMNOPQRSTUVWXYZ AFM Frequency modulation in audio. The analog audio signal is frequency modulated and recorded next to the video signal in Modulated Frequency (FM) on the video track of the tape. Our Services Audiovisual ConsultingDigitalisationTrainingTeleport BACK TO INDEX Audio FM ← Acimut / Azimut ALDC (Adaptive Lossles Data Compresion of IBM) →