Abstract: Methods and systems for identifying abnormal sounds in a particular environment. A normal audio stream obtained in the absence of abnormal sounds may be used as a baseline for subsequently processing an incoming audio stream with a processor to determine whether the incoming audio stream from the microphone in the particular environment includes an abnormal audio event for the particular environment. When it is determined that the incoming audio stream includes an abnormal audio event for the particular environment an electronic database may be accessed to determine a location of the abnormal audio event in the particular environment. A video camera with a field of view that includes the location of the abnormal audio event in the particular environment may be identified and the video stream from the identified video camera retrieved and displayed.

Abstract: A surveillance system includes fixed video cameras and mobile security devices. Each mobile security device includes a mobile video camera, a memory, a transceiver and a controller that is configured to receive instructions from a surveillance system controller to fly to a particular location at which an incident is believed to be occurring and to instruct the mobile video camera to capture video of the incident. In some cases, the controller of the mobile security device is configured to solicit and receive one or more video streams from fixed video cameras that are determined to meet predetermined criteria with respect to the incident, and store the one or more received video streams in the memory. The controller of the mobile security device may subsequently transmit the collected video streams to the surveillance system controller.

Abstract: Methods and systems for identifying abnormal sounds in a particular environment. A normal audio stream obtained in the absence of abnormal sounds may be used as a baseline for subsequently processing an incoming audio stream with a processor to determine whether the incoming audio stream from the microphone in the particular environment includes an abnormal audio event for the particular environment. When it is determined that the incoming audio stream includes an abnormal audio event for the particular environment an electronic database may be accessed to determine a location of the abnormal audio event in the particular environment. A video camera with a field of view that includes the location of the abnormal audio event in the particular environment may be identified and the video stream from the identified video camera retrieved and displayed.