Acoustics of the Organ hall and the Concert foyer of the Central museum of musical culture in Moscow

Central museum of musical culture in Moscow has 2 concert premises: the Organ hall, where the the pipe organ was installed in 1979 by the German organ-building company «Alexander Schuke», and the Concert foyer of the 1st floor, where concerts are held from 1998, when the historic organ built by Friedrich Ladegast in 1868 was installed after the restoration. The results of acoustical measurements made in the Organ hall before rebuilding of 2004 and after rebuilding, and in the Concert foyer are represented. It is shown that the acoustical characteristics of the Organ hall became worse after rebuilding of the hall. The recommendations to improve the acoustics of the Organ hall are proposed. The acoustical characteristics of the Concert foyer are good enough for the historic Ladegast organ.