 As the base S5 encoder and the base S5 decoder are agnostic to the other system components, EMCA-407 represents the common base for all S5 specific standards.ECMA-407 specifies the base S5 encoder and decoder in terms of configuration data, downmix, inverse coding parameter data and upmix.In addition it provides reference and guidance on how to incorporate further components to form a scalable multichannel coding system for audio data compression.