A new method for the representation of sound sources that vary their directivity in time in auralizations is introduced. A recording method with multi-channel anechoic recordings is proposed in connection with the use of a multiple virtual source reproduction system in auralizations. Listening experiments designed to validate the quality of the reproduction method compared with a fixed directivity representation have showed that there is a clear improvement in the timbral quality of the reproduced sound. The improvement represented by the system regarding the spaciousness of sound did not prove to be significant. Further applications of the method are considered for ensembles within room auralizations as well as in the field of studio recording techniques for large instruments. A part of this article was published previously in .