“…Historically, this CCP observed at cocktail party phenomenon, the delineation of which goes back to a classic paper by Cherry in 1953 [37] [38]. In this section , it is worthy to address the following issues associated to CCP : (1) human auditory scene analysis, which is a general process carried out by the auditory system of a human listener; (2) insight into auditory perception, which is derived from Marr's vision theory; (3) computational auditory scene analysis, which focuses on specific approaches aimed at solving the machine cocktail party problem; (4) active audition, the proposal for which is motivated by analogy with active vision, and (5) discussion of brain theory and independent component analysis, on the one hand, and correlative neural firing, on the other [39].Interestingly, the ability to maintain a conversation with one person while at a noisy cocktail party has often been used to illustrate a general characteristic of auditory selective attention, namely that perceivers' attention is usually directed to a particular set of sounds and not to others [40] [41]. Part of the cocktail party problem involves parsing co-occurring speech sounds and simultaneously integrating these various speech tokens into meaningful units ("auditory scene analysis").That auditory scene analysis framework to be neurobiologically feasible, it would have to accommodate the ability to switch the focus of attention from one speech signal of interest to another and do so with relative ease [39].…”