9 Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; headsets; blank magnetic recording media, blank sound recording disks; blank compact discs, DVDs and other digital recording media; mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment, computers; computer software for use in database management, use as a spreadsheet and word processing in the field of improvement of communication and listening skills; downloadable audiovisual instructional and teaching material in the field of improvement of communication and listening skills; apparatus for transmitting radio programs and radio relay messages and television apparatus for projection purposes; record players; talking machines; audio discs featuring programs of improvement of communication and listening skills; compact disks CDs featuring programs of improvement of communication and listening skills; exposed camera, cinematographic, photographic, slide, and x-ray films; sound recorded tapes; photographic transparencies; downloadable electronic publications, namely, digital publications in the nature of e-books and digital magazines in the field of improvement of communication and listening skills; teaching apparatus and instruments used to improve skills in communication, development and adaptation, namely, amplifier and helmet systems including helmets and amplifiers specially designed to improve individuals' control of sound and voice and to analyze the control of the reception of sound by human ear; software for facilitating the training of individuals in the processing and integration of voice and sound, the control and treatment of learning difficulties and psychological disorders, the mother tongue, foreign languages, and music; downloadable electronic publications, namely, educational textbooks and instruction manuals for additional and corrective educational means and intended to facilitate the training of individuals in the processing and integration of voice and sound, the control and treatment of learning difficulties and psychological disorders, the mother tongue, foreign languages, and music; pre-recorded audio tapes, compact discs, DVDs and downloadable WAV files for facilitating the training of individuals in the processing and integration of voice and sound, the control and treatment of learning difficulties and psychological disorders, the mother tongue, foreign languages, and music