Baigiamajame darbe atliktas ausies įdėklų gamybos netikslumų įtakos garso parametrams tyrimas. Išanalizuoti mokslo darbai, kuriuose pateikiami eksperimentų su ausies įdėklais rezultatai, apžvelgtos įdėklų gamybos technologijos ir galimi netikslumai. Atlikti eksperimentiniai garso parametrų tyrimai su skirtingais 9 įdėklais naudojant klausos analizatorių. Atlikta statistinė ir palyginamoji matavimo rezultatų analizė. Nustatyti garso parametrų skirtingiems įdėklams kitimo intervalai, pateiktos priklausomybės, suformuluotos išvados. / In final thesis the influence of manufacturing inaccuracy of earmoulds to sound parameters was analysed. Scientific works exploring results of experiments with earmoulds were discussed and technological process is as well as inaccuracy of earmoulds were presented. Experimental study of sound parameters with different 9 types of earmoulds were made by using hearing analyzer device. A statistical and comparable analysis of the data is given. The intervals of sound parameters to different earmoulds types are determined as well as dependencies of them are presented and results of the final work are concluded. Structure: introduction, the analytical parts of the test object experiments, conclusions and suggestions, bibliographic sources.