1,720,992 research outputs found
ESMA-3D Immersive Soundscape Recordings
No full textESMA3D (Equal Segment Microphone Array 3D) is a 3D mic array technique for 360° recording developed by Hyunkook Lee of the APL. It consists of 8 microphones arranged in a horizontally spaced, vertically coincident fashion. This provides a very good spaciousness and stable/accurate horizontal and vertical imaging as well as a realistic impression of being there and strong immersion. The main layer (mainly responsible for capture sound sources) is a 50cm x 50cm square of four cardioid microphones spaced with a 90° subtended angle between each pair of mics. The upper layer uses 4 supercardioid mics facing upwards for capturing ambience and elevated sources like birds. The lower and upper layers are coincident (0 spacing, but with a subtended angle of 90 to 120° to have enough level difference between the layers for stable vertical localisation). This design is based on our previous findings showing that vertical mic spacing has little or no contribution to spatial impression in 3D recording. The Schoeps ORTF3D is a brother/sister mic array sharing the same concept - horizontal spacing/vertical coincidence.
The reproduction of ESMA3D requires the 8-channel Cube speaker array or 9.1 Dolby Atmos or Auro-3D setup (without the centre and sub), or it can be also binaurally or/and Ambisonically rendered, which still preserves a good quality if used with a good quality decoder, e.g. IEM plugin suite or Aalto SPARTA suite.
More details about the array design and listening test results can be found in our AES papers below.
http://www.aes.org/e-lib/browse.cfm?elib=19883
http://www.aes.org/e-lib/browse.cfm?elib=19401
http://www.aes.org/e-lib/browse.cfm?elib=17560
http://www.aes.org/e-lib/browse.cfm?elib=20392</p
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
360° Binaural Room Impulse Response (BRIR) Database for 6DOF spatial perception research
No full text<p>by Applied Psychoacoustics Lab, University of Huddersfield</p>
<p> </p>
<p>Authors: Bogdan Bacila and Hyunkook Lee</p>
<p>[email protected], [email protected]</p>
<p> </p>
<p><strong>Description</strong></p>
<p>An open-access database for 360° binaural room impulse responses (BRIR) captured in a reverberant concert hall. Head-rotated BRIRs were acquired with 3.6° angular resolution for each of 13 different receiver positions, using a custom-made head-rotation system that was automated and integrated with the Huddersfield Acoustical Analysis Research Toolbox. The BRIRs are provided in the SOFA format. The library also contains impulse responses captured using a first-order Ambisonic microphone and an omnidirectional microphone. It is expected that the database would be useful for studying the perception of spatial attributes in a six degrees-of-freedom context.</p>
<p> </p>
<p><strong>Folder Structure</strong></p>
<p>The impulse responses are organised into two main folders:</p>
<p>* Binaural: Contains the SOFA files and MATLAB files for each position, with a 3.6° angular resolution, recorded with the Neumann KU100 binaural head.</p>
<p>* FOA: Contains the First Order Ambisonics audio files in A format and B format for each individual position, recorded with an Sennheiser Ambeo microphone in an end-fire configuration. </p>
<p> </p>
<p><strong>Naming Convention</strong></p>
<p>The files are named after their relative position on the stage and the distance from the stage:</p>
<p>* C = Centre</p>
<p>* L = Left</p>
<p>* LW = Left Wide</p>
<p> </p>
<p><strong>License</strong></p>
<p>This project is licensed under the CC-BY-4.0 License - see the License.txt file for details</p>
<p> </p>
<p><strong>Publication</strong></p>
<p>This database was presented at the Audio Engineering Society 146th International Convention.</p>
<p>Download link: http://www.aes.org/e-lib/browse.cfm?elib=20371</p>
<p> </p>
<p><strong>Referencing</strong></p>
<p>If you use the database for your research, please reference it as follows.</p>
<p>Bacila, B. I., & Lee, H. (2019). 360° Binaural Room Impulse Response (BRIR) Database for 6DOF Spatial Perception Research. Presented at the Audio Engineering Society Convention 146, Dublin, e-Brief 513</p>
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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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