The purpose of {TAIL ~ the invention} is to bridge the gap between parametric multi channel audio coding and {HEAD ~ matrixed surround multi channel coding} by gradually improving the sound of an up mix signal while raising the bit rate consumed by the side information starting from 0 up to the bit rates of the parametric methods 
The purpose of { TAIL ~ the invention } is to bridge the gap between parametric multi channel audio coding and { HEAD ~ matrixed surround multi channel coding } by gradually improving the sound of an up mix signal while raising the bit rate consumed by the side information starting from 0 up to the bit rates of the parametric methods
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