1) Audio and Vision Mixers - this was something i had heard of before, but haven't ever used. Originally and simply i thought that these just edited the audio and vision together, but i found out on my placement that this was not the case. An audio mixer can amplify incoming signals which allows the volume to be switched up or down and most importantly, it allows for multiple audio signals to be layered together correctly enabling for a smooth sound. For example when a piece of music is layered with the audio of someone speaking. A vision mixer is a piece of equipment that is used to select between a range of different video sources; for example this is most important with any form of live event that a multi-camera set up is being used. Within the event i was at with Sound Credit; they were webcasting a presentation event for a french banking company, therefore they were using about 3 cameras in order to cover the entire stage that the presentation was set on. Within this the mixer would be useful as it would allow the director to move between cameras as the people on stage move around, allowing for the best coverage.


3) PPU; Portable Production Unit - In essence this is the main component of a live studio production, its portable and designed to easily fit into the back of a van to allow for quick movement from production to production. Standards PPU's can run up to 12 cameras; using a digital video switcher. Connecting with the audio and vision mixers allowing both to run out for a smooth transition.