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The tool presented enables the sound behaviour of a room to be objectified on the basis of the representation of the characteristic function (CF) of said room.In this paper, we study characteristic functions, defined from the impulsive responses measured at different points in the room, that are obtained in churchesand cathedrals. These CFs show a variation that correlates with the distance from the point of measurement and the source. An analysis is carried out on the relationship between this variation with those acoustic parameters that depend on the distance to the source: C50, C80,and G. In addition, the differentiating features between these types of spaces are shown,therebyallowing the characteristic function to offer an overall assessment of the room, which in turnenables the classification of similar sound spaces

Acoustics of the stage is of particular interest since it focusesonthe study of the acoustic environment and the assessmentof the sensation perceived by the performers of classical orchestras in concert halls. The ISO 3382-1 standard introduces two monophonic objective parametersofstage support, ST: early support (STEarly), related to the ease ofhearingtheother members of an orchestra;and late support (STLate), related to the response of the hall as perceived by the musician. In this work,the behaviour of these two objective parameters measured in several hallsfromthe Valencian Communityof various typologies, acoustic characteristics,and geometric-architectural variables of the stage are analysed in order to study their variability and dependence on the type of hall. La acústica del escenario resulta de especial interés ya que centra el estudio del entorno acústico y la valoración de la sensación percibida por los intérpretes de orquestas clásicas en las salas de conciertos. La norma ISO 3382-1 introduce dos parámetros objetivos monofónicos soporte de escena, ST: soporte precoz (STprecoz),relacionado con la facilidad de audición de los demás miembros de laorquesta, y soporte tardío (STtardío), relacionado con la respuesta de la sala percibida por el músico. En este trabajo se analiza el comportamiento de estos dos parámetros objetivos medidos en varias salas de conciertosde la Comunidad Valencianade diferentes tipologías, características acústicas y variables geométrico-arquitectónicasde los escenarios, con objeto de estudiar su variabilidad y su dependencia con el tipo de sala.