Abstract. The acoustic transmission channel has an irreplaceable role in the transfer of information in all spheres of human life. Since normal interpersonal communication, via advertisements to cultural events such as theater performances, film screenings and concerts. The dominant position of the acoustic communication still keeps in the teaching process. For undisturbed transmission of acoustic information it is necessary to create appropriate acoustic conditions. Yet achievable intelligibility in classrooms, lecture halls and a congress devoted little attention. The article brings partial results of extensive research, the quality of information transmission acoustic transmission channel in the classrooms of elementary and secondary schools.

Abstract. Optical (image) transmission channel has an irreplaceable role in the transfer of information in all spheres of human life. Since normal interpersonal communication, via advertisements to cultural events where visual perception is an integral part of the artwork. Due to the growing digital support of education significantly increases the proportion of optical information in the teaching process. For undisturbed transmission of optical information it is necessary to create adequate lighting in classrooms and technical conditions. Yet the resolution of critical issues of detail, visibility and image contrast in classrooms, lecture halls and a congress devoted little attention. The article brings partial results of extensive research, the quality of information transfer optical transmission channel in the classrooms of elementary and secondary schools.