A personal direction finding apparatus for sensing electromagnetic, infrared or ultrasound radiation from a source (S) to determine the direction of the source or generate a virtual sound environment. The apparatus is characterised in that it comprises a radiation sensing means (1) worn on the user's head (2) for generating a signal having a variable characteristic depending on the direction (R) of the source (S) relative to the sensing means (1), i.e. the position of the user's head, a receiver (4) optionally provided as a demodulator, a direction signal processing circuit (5) outputting a control signal (x) indicating the angular deviation (a) between the direction of the source (S) and the current position of the sensing means (1), i.e. the user's viewing axis, and two earphones (3d, 3g) placed over the user's ears and connected to the output of the processing circuit (5).
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