Surveillance system

A directional audio and video surveillance system for an indoor area, the surveillance system comprising:

• a plurality of planar microphone arrays respectively installed at multiple different locations within the indoor area, the plurality of planar microphone arrays being configured to generate audio signals, each planar microphone array of the plurality of planar microphone arrays including a plurality of microphones configured to capture an audio conversation of at least one targeted subject located in the indoor area;
• a plurality of close circuit television (CCTV) cameras configured to capture video signals that identify a position of the targeted subject within the indoor area, the plurality of CCTV cameras being integrated to the plurality of planar microphone arrays to capture the audio conversion of the targeted subject;
• a signal processor configured to analyze the generated audio signals received from the plurality of planar microphone arrays, the signal processor being configured to analyze the captured video signals and calculate position coordinates of the targeted subject from the video signals by defining the indoor area in grids and identifying the position coordinates of the targeted subject using a graphical user interface;
• a first delay network including a plurality of first delay compensating modules, each first delay compensating module being respectively located at an output of a single microphone planar microphone array of the plurality of planar microphone arrays, each first delay compensating module of the plurality of first delay compensating modules determining first delay compensation of a delay of each of the plurality of microphones in the corresponding single microphone planar microphone array, which focuses the respective microphone planar microphone array of the plurality of planar microphone arrays on the identified position coordinates of the targeted subject;
• and
• a second delay network located at an output of the first delay network to receive the determined first delay compensation from each of the plurality of first delay compensating modules, the second delay network determining second delay compensation of a summed delay of each respective planar microphone array of all of the plurality of planar microphone arrays installed at multiple different locations within the indoor area.