The thesis describes the results of a theoretical and experimental
study of equalisation of the sound field in a room. The
theoretical study is based on computer simulations, carried out
both in the frequency domain and in the time domain with account
taken of the causality of the control filters. The influence of
the number of sources and their position, the number of error
sensors and their positions, the frequency range etc. is examined.
Among the conclusions can be mentioned that the size of the
equalised area can be maximised and the number of loudspeakers can
be minimised if the sound field that is generated is a propagating
plane wave.