Stereo microphone unit

DETAILED DESCRIPTION It is an object of the present invention to provide an improved built-in type stereo microphone unit which executes a stereophonic sound processing mode in a state installed in a casing of a video camera or the like.
For the purpose of achieving the object mentioned, the stereo microphone unit of the present invention comprises a cabinet, two nondirectional microphones disposed with a predetermined distance therebetween on the wall of the cabinet for collecting outside sound signal, delay means for delaying each output of the microphones by a time period corresponding to the predetermined distance, and subtracter means for subtracting the output of the delay means relative to one microphone from the output of the other microphone.
In such stereo microphone unit, a stereophonic effect is attained with regard to relatively higher-pitched sound by the distance existing between the two microphones and, with regard to relatively lower-pitched sound, by electrically processing the audio signals input to and output from the two microphones, thereby enabling a stereophonic operation with the microphones installed in a casing of a video camera or the like.
The above and other features and advantages of the present invention will become apparent from the following description which will be given with reference to the illustrative accompanying drawings.