1/4 GHz counter

Reproduction of sound with directional information can be done with two-channel systems. Of these, there are two basic types: conventional stereophony and the binaural system. By far the best-known is conventional stereo; basically, this can be described as the reproduction of two mono signals through two loudspeakers, whereby amplitude differences between the two channels determine the position of the `phantom` image in the total stereo picture. In recent years, an alternative system has been discussed extensively : the binaural system, or dummy-head stereo as it is popularly referred to. As the name implies, dummy-head recordings are made with an artificial head that has microphones inside its ears.