Electroacoustic laboratory

Since the very beginnings of the Institute, after the concepts of Prof. Djordje Kostic, KSAFA (Kostic’s selective auditory filter amplification) apparatuses of different types have been developed. Near the end of the 80s, Kostic introduced new conceptual changes in the construction of KSAFA apparatuses, which are exclusively based on audiolinguistic principles of hearing, speech and language development. With that aim, he eliminated all visual and tactile elements which until then represented additional elements of KSAFA apparatuses. In the period of 1989 to 1995, together with research fellows at the IEPSP he developed KSAFA-m, KSAFA-v, KSAFA-u and KISAFA apparatuses. By new constructional solutions, they introduced KSAFA apparatuses to the areas of all kinds of speech-language pathology - from undeveloped speech, via all types of speech-language pathology up to the promotion of learning Serbian language as a foreign language. Professor Djordje Kostic and IEPSP received the first prize and medal from the Association of Inventors, Belgrade with the image of Nikola Tesla on April 22, 1993 for the solution of KISAFA. Together with research fellows at the IEPSP Prof. Kostic worked on the development of new methodological procedures providing use of KSAFA apparatuses from prenatal to adult period. In 1993 we started working on coordination of standard apparatuses of ultra sound and new defined generators of sound, which resulted in the development of prenatal hearing screening after Sovilj-Ljubic method. By the beginning of 2000 IEPSP research team started developing the system of OAE (otoacoustic emission) – apparatuses for TEOAE and DPOAE, as portable clinical apparatuses for early diagnostics of hearing impairment in children two or three days after birth. In EAL, expert system for objective evaluation of pathological pronunciation of sounds of Serbian language was developed.