1,721,003 research outputs found
The influence of vegetation and shape-related features in making parks more noise resistant
Full text linkThe aim of this paper is to assess the effect of vegetation-related parameters and shape-related features on noise levels in park areas. For the current research, eight case study parks of various sizes were identified in Antwerp and noise levels were measured inside and around them. The measurements were conducted during multiple days using portable custom-made sound recording devices. The analysis was performed by correlating the input with the output parameters. Input data include green space and shape metrics, while output parameters consist of various noise indices (L10, L50, L90, LAeq, LCeq-LAeq) averaged for the entire parks. In a more focused scale the same analysis was attempted referring to measurement points inside the parks.Correlations in this case were identified only between green space features and L90. The entire analysis denotes that green space features can be an important factor in noise reduction within the parks,independently of the effects from the surrounding environment
Characterisation of the soundscape in Valley Gardens, Brighton, by a soundwalk prior to an urban design intervention
No full textThe purpose of the present study was to characterize the soundscape of the Valley Gardens in Brighton before the area is converted into a downtown park. Valley Gardens is located in the busy city centre. It extends from the Brighton Pier at the seafront and approximately 1.5 km to the north. It includes Old Stein, Victoria Gardens, St Peter's Church, and The Level. In 2015 work will commence on redeveloping Victoria Gardens and St Peter's Church. In order to characterize the soundscape of the Valley Gardens prior to this urban design intervention a soundwalk was conducted. In October 2014, a group of 21 persons-experts in acoustics and officers of the City Council-were guided through the area together, and assessed the soundscape at eight sites: five within the Valley Gardens and three reference sites. The assessments covered the soundscape quality, how appropriate the soundscape is to the place, the dominance of perceived sound sources, and the affective quality of the soundscape. In addition, binaural recordings and sound-level measurements were conducted at each of the eight sites during the soundwalk. Preliminary results indicate that the Valley Gardens was dominated by the sound of road traffic, and that the soundscape was perceived as inappropriate to the place. Consequently, the planned design intervention should reduce the dominance of road-traffic sound and introduce more positive sounds, like the sound of people and nature. This would be done through careful planning of the landscape and human activities within the area. The plan is to follow-up these results with a post-intervention soundwalk
The influence of vegetation and surrounding traffic noise parameters on the sound environment of urban parks
Full text linkThe main aim of this study was to investigate the effects of vegetation and traffic-noise parameters on the sound environment of urban parks. Eight parks of different sizes and varying proximity to the city's ring road were selected in Antwerp, Belgium. The sound environment was evaluated with a dual approach, using primarily simulated traffic data from the surrounding roads and then measurement noise data from mobile devices within the parks. Percentile weighted sound levels were calculated considering various indicators (LA(10), LA(50), LA(90), L-Aeq) with special emphasis on background noise (LA(90)) and peak values (LA(10)).
Results showed that simulated noise levels were slightly overestimated compared to the actual ones. Within the parks very small differences were found no matter whether measurement points were examined individually or aggregated on grids. Overall, background noise (L-A90) presented more fluctuations than LAID. At the same time, the average noise levels both for L-A90 and L-A10 were higher in the surrounding environment of the parks compared to the inside - most probably because of traffic sound sources and the proximity to main roads. Additional analysis was also performed within the parks for the identification of "hot" and "cold" spots for L-A90 using GIS tools. Relationships between noise levels and morphological features of the surrounding environment were also identified. The final step of analysis dealt with the effects of tree or grass areas in noise indices. The effect of additional sources other than traffic is also explained as part of the limitations and the actual findings of this research
Assessing and modeling the role of the noticeability of sound events and attention in urban sound perception
Full text linkOsobine violončela i osvrt na program diplomskog koncerta
No full textDiplomski rad donosi pregled razvoja violončela uz kratki osvrt na program diplomskog koncerta autora, koji se satoji od djela J. S. Bacha, L. Boccherinija, L. van Beethovena i E. Elgara
Extending perceived stereo baseline with vector-base amplitude panning and polarity inversion
No full textWe propose an extension to Vector-Base Amplitude Panning (VBAP) that simulates audio positioning beyond the physical baseline of a stereo speaker pair by introducing polarity inversion. The extension to VBAP, where audio sources are positioned on the line segment between loudspeaker vectors, refers to enabling panning outside the speaker positions, and thereby flipping the polarity of the signal from the opposite side speaker. The implementation allows for real-time processing. Listening experiments were conducted in a room with low reverberation on a pair of Bloomline Omnidrive Pro Mk II speakers, with eight participants who localized audio samples inside and beyond the stereo field. Results show that participants were able to perceive sound source positions up to 60% wider than the physical speaker span. The findings imply that by the polarity inversion VBAP can be generalised to, simulate audio positioning outside the speaker bounds and gives rise to a tool for creating virtual sound sources beyond the physical boundaries of the room in future immersive 3D applications
Extending perceived stereo baseline with vector-base amplitude panning and polarity inversion
No full textWe propose an extension to Vector-Base Amplitude Panning (VBAP) that simulates audio positioning beyond the physical baseline of a stereo speaker pair by introducing polarity inversion. The extension to VBAP, where audio sources are positioned on the line segment between loudspeaker vectors, refers to enabling panning outside the speaker positions, and thereby flipping the polarity of the signal from the opposite side speaker. The implementation allows for real-time processing. Listening experiments were conducted in a room with low reverberation on a pair of Bloomline Omnidrive Pro Mk II speakers, with eight participants who localized audio samples inside and beyond the stereo field. Results show that participants were able to perceive sound source positions up to 60% wider than the physical speaker span. The findings imply that by the polarity inversion VBAP can be generalised to, simulate audio positioning outside the speaker bounds and gives rise to a tool for creating virtual sound sources beyond the physical boundaries of the room in future immersive 3D applications
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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