The progression from standard definition (SD) to high definition (HD) broadcasting brings with it the requirement for a digital 5.1 audio stream. In many working environments broadcasters find themselves in situations where they need to introduce previously recorded stereo material into an HD 5.1 audio stream. A typical example would be in the coverage of major sporting tournaments where short extracts of archived material from previous years? winning performances need to be inserted.
Folding the audio back down to stereo momentarily is unacceptable _ the UPM-1 will take any digital stereo input signal and create a natural sounding 5.1 mix.