PERCEIVED INFLUENCE OF CHANGES IN MUSICAL INSTRUMENT DIRECTIVITY REPRESENTATION

2.2 Results The directivity representation of musical instruments in room acoustic simulations has shown to be significant in the distribution of the calculated acoustical parameters in a room. Different directivity representations of musical instruments were used to create pairs of room acoustic auralizations in order to test for perceived changes in the sound. Listening tests were designed and conducted with an emphasis on the perception of the acoustical attributes of room simulations. Results show that changes in the directivity representation of the source can influence the perceived sound in auralizations and that these perceived changes are more pronounced in terms of loudness and reverberance Measurements showed variations between the directivities of individual tones in a given octave band. These variations were greater for the clarinet and the French horn than for the trumpet. Figure 1 and 2 show the measured directivities for three specific tones and the calculated averaged directivity over the whole pitch range at the 1000 Hz octave band. Results are shown for both, the horizontal and vertical axes. 3. DIRECTIVITY IN A ROO