This study investigates the performance of dodecahedral and impulse sources when measuring acoustic parameters in enclosures according to ISO 3382-1 [Acoustics-Measurement of room acoustic parameters. Part 1: Performance spaces (International Organization for Standardization, Geneva, Switzerland, 2009)]. In general, methods using speakers as a sound source are limited by their frequency response and directivity. On the other hand, getting impulse responses from impulse sources typically involves a lack of repeatability, and it is usually necessary to average several measurements for each position. Through experiments in different auditoriums that recreate typical situations in which the measurement standard is applied, it is found that using impulse sources leads to greater variation in the results, especially at low frequencies. However, this prevents subsequent dispersions due to variables that this technique does not require, such as the orientation of the emitting source. These dispersions may be relevant at high frequencies exceeding the established tolerance criteria for certain parameters. Finally, a new descriptor for dodecahedral sources reflecting the influence their lack of omnidirectionality produces on measuring acoustic parameters is proposed.

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An exhaustive characterization of the new auditorium of the Navarre Conservatory of Music (Pamplona, Spain) has been carried out. All monaural acoustic parameters in all seats (375) have been measured for three source positions on the stage. For acoustic characterization, countless results can be obtained in accordance (in all cases) with the views of the ISO-3382 for the presentation of the results. The spatial dispersion for each source position and combinations thereof will be shown. Finally, the accuracy on the acoustic evaluation of the room will be discussed from a statistical point of view.

An exhaustive characterization of the auditorium of Baranain (Navarre, Spain) has been carried out. All acoustic parameters (both monaural and binaural) in many seats (96 for monaural and 48 for binaural) have been measured for three source positions on the stage. For acoustic characterization, a countless results can be obtained in accordance (in all cases) with the views of the ISO-3382 for the presentation of the results. The spatial dispersion for each source position and combinations thereof will be shown. Accuracy on the acoustic evaluation of the room will be discussed from a statistical point of view.