Audio
The sound is inseparable from listening. All modern devices, smartphone, mobile, desktops, cabinets and other spying equipment produce so-called audio.
Definition of audio
Audio is the unaltered natural sound. It comes from a recording obtained from a device with a mechanism designed for this operation. It comes in the form of a file called an audio file which is a copy of the sound emanating from the original source. The recorder can be a wifi spy cameraa radio camera wifi alarm clock or any high-tech gadget. The resulting file will be audio. A stand-alone surveillance camera or a MICRO spy USB key has a map that records the image and sound. The user will have an audiovisual file that can be separated into a video and audio file.
Audio and format
An audio file contains a certain amount of computer data. These are various sounds: music tunes, human voices and others. The sounds recorded by a spy pen or a mini spy camera are scanned according to a system called COder-DECoder or codec. It transforms the sound signal into a digital language. The data is stored as files of different formats, including MP3 and WMA. The MP3 is the most popular file because it is used by the vast majority of Internet users and lovers of spy gadgets like the lighter spy camera or the camera bezel hd.
Audio and CCTV
Audio is in high demand in video surveillance. It enriches the information given by the images. A user ofwifi camera bulb can extract audio from the audiovisual file obtained in the memory card or from the network recorder box. The audio file can be worked to obtain a mono, stereo or multi-channel sound.
