Headphones; earphones; cell phones; mobile phones; smart phones; feature for sound processing, namely, computer software and hardware for converting digital audio to analog; computer software and hardware for converting digital audio to analog embedded in headphones, earphones, cell phones, mobile phones and smart phones

'analog':23,33 'audio':21,31 'cell':3,38 'comput':14,24 'convert':19,29 'digit':20,30 'earphon':2,37 'embed':34 'featur':9 'hardwar':17,27 'headphon':1,36 'mobil':5,40 'name':13 'phone':4,6,8,39,41,44 'process':12 'smart':7,43 'softwar':15,25 'sound':11

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