Ключевые слова: above, audio, audiobook, background, black, book, cable, communication, concept, copy space, cover, digital, earphone, education, equipment, head, headphone, headset, idea, information, learning, leisure, library, listen, literature, modern, music, object, phone, pile, play, record, school, silence, sound, sound silence, space, stack, stereo, stone, studio, study, teaching, technology, textbook, texture, top, university, white,