Intelligent Network Video, 2nd Edition

CHAPTER 7 Audio technologies

DOI: 10.1201/9781315399904-7

Much of our learning and our relations with others are conducted through audiovisual cues—that is, through what we see, hear, and say. In our daily lives, we often are alerted to unusual events first by what we hear. Then we verify the events visually.

Integrating audio with a video surveillance system can be invaluable to the system’s capabilities to, for example, detect and interpret events and emergencies. Consider a video surveillance system without audio. If the source were outside the camera’s field of view, a cry for help, the sound of breaking glass, a gunshot, or an explosion in the vicinity would escape notice by a video surveillance system without audio. Even if a scene ...