Abstract: A direction indicator giving a visual indication of the direction of origin of incident sounds having frequencies in a predetermined frequency range, is disclosed herein. The direction indicator embodies at least three sound detectors, each having an active filter passing electrical signals in a predetermined frequency range and a light emitting diode giving a visual indication of the intensity of the sound in the predetermined range received by the associated sound detector. Two of the sound detectors are disposed to preferentially receive sounds from opposite directions, and the third sound detector is disposed to receive sounds originating from a third direction normal to the directions of the first two. In the preferred embodiment, the direction indicator is an emergency vehicle direction indicator for use in an automobile giving the operator a visual indication of the direction of an emergency vehicle sounding its siren.