Linear multivariate evaluation models for spatial perception of soundscape

Soundscape is a sound environment that emphasizes the awareness of auditory perception and social or cultural understandings. The case of spatial perception is significant to soundscape. However, previous studies on the auditory spatial perception of the soundscape environment have been limited. Based on 21 native binaural-recorded soundscape samples and a set of auditory experiments for subjective spatial perception (SSP), a study of the analysis among semantic parameters, the inter-aural-cross-correlation coefficient (IACC), A-weighted-equal sound-pressure-level (Leq), dynamic (D) and SSP is introduced to verify the independent effect of each parameter and to re-determine some of their possible relationships. The results show that the more noisiness the audience perceived, the worse spatial awareness they received, while the closer and more directional the sound source image variations, dynamics and numbers of sound sources in the soundscape are, the better the spatial awareness would be. Thus, the sensations of roughness, sound intensity, transient dynamic and the values of Leq and IACC have a suitable range for better spatial perception. A better spatial awareness seems to promote the preference slightly for the audience. Finally, setting SSPs as functions of the semantic parameters and Leq-D-IACC, two linear multivariate evaluation models of subjective spatial perception are proposed

New Developments About the Objective Parameter EDT in Comparison with the Frequency Analisys of the Impulse response

Vengono esaminate ed interpretate le misurazioni acustiche eseguite nel Teatro Nuovo di Spoleto con particolare riferimento ad un approfondimento sul parametro Early Decay Tim

Recent investigations about some objective acoustical parameters

Viene proposto un nuovo parametro per la caratterizzazione acustica degli spazi teatrali, con particolare riferimento all'ascolto della musica: il parametro viene definito "forza relativa del suono" G relative e ne vengono illustrate le peculiarit\ue0 con riferimento a misurazioni eseguite presso l'Auditorium Manzoni di Bologn

Influence of Auralization methodology of musical pieces in the Subjective Evaluation

Generally acoustical qualities of concert halls and opera houses are evaluated in base of BIRs (binaural impulse responses) measured in them, and the anechoic music convoluted with BIR realizes the virtual sound as it were played in the sound field. Interaural Cross Correlation Coefficient (IACC) calculated from BIR is one of parameter to evaluate the spaciousness of hall. However the value of IACC is changed by the convolution technique in accordance with the kind of musical motif. For example, one binaural impulse response measured in the concert hall in Tsuyama (Japan) presents 0.16 for the value of IACC, while the IACC of the symphony \u201dRoyal Pavane\u201d (Orlando Gibbons) convoluted with it is 0.39, and the IACC of the symphony \u201cSymphonietta n14 the forth movement\u201d (Malcolm Arnold) convoluted with it is 0.32. The aim of this study is to predict the value of IACC after convolution using the acoustical characteristic extracted from the musical moti