Аннотация:The aim of the report is to introduce the results of extensive study of concert Hall's acoustics
before and after renovation. The study deals with objective and subjective acoustic
measurements. Objective assessment is based on the detailed analyze, measurement and
comparison of acoustic characteristics before and after renovation. Subjective assessment is
based on the collecting and analyzing opinions of artists, teachers, professors and audience.
Reported results were obtained by a long-term thorough study of Halls' acoustics used for
classic music concerts. The Halls were built more than one hundred years ago and seriously
renovated in last five years. A special attention of renovators was given to the maintenance of
floors, ceilings and walls constructions, decoration materials. Every renovation phase was
studied in detail.