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5 results for “BRIRs”
Dataset: Eigenmike-DRIRs, KEMAR 45BA-BRIRs, RIRs and 360° pictures captured at five positions of a small conference room
<p>A data set was created to study the position dependent perception of room acoustics in case of a small conference room. Binaural room impulse responses (BRIRs) were measured with KEMAR 45BA at 5 different potential listening positions. To keep the direct sound similar the Genelec 1030A two-way loudspeaker was always placed at a distance of 2.5m. In one condition, the loudspeaker was turned towards the listening position, in the other condition it was turned by 180° to achieve an indirect reproduction with low direct sound energy. Furthermore, an mh acoustics Eigenmike was placed at each of the five listening positions and 32-channel directional room impulses responses (DRIRs) as well as an omnidirectional room impulse response (RIR) were captured where the center of the head was placed before.</p> <p>Additionally, 360° visual footages were captured with a GoPro Omni spherical camera array to provide audiovisual impressions of the listening situation at the five positions. </p>
A Collection of BRIRs for a Listener Wearing Different Types of Open Headphones
<p><strong>Introduction:</strong></p> <p>The following data set was collected to study the influence of several open headphone models on a real sound source.<br> This investigation was motivated by studies on augmented acoustic reality (AAR) scenarios. In AAR applications virtual sound sources are usually played back using binaural synthesis over headphones with the goal to blend in with the real acoustic environment. Due to the presence of headphones, additional scattering, resonance and shadowing effects are introduced to the real sound field. <br> The data set consists of binaural room impulse responses (BRIRs) measured with a KEMAR 45BA wearing different open headphone models. The measurements were carried out in the listening laboratory at the TU Ilmenau. Two distances (75cm and 200cm) and 92 angles (4° azimuthal resolution incl. 90° and 270°) were measured. Each configuration was measured three times with a repositioning of the headphones.</p> <p><strong>Important notes:</strong><br> - The mat-files contain the BRIR matrix with the dimensions samples-channels-angles<br> - The mat-files contain an angle vector for the corresponding azimuthal steps<br> - The head rotation angle runs clockwise</p> <p> </p> <p>The data set was presented at DAGA 21 [1].<br> A perceptual analysis using this data set can be found in [2].</p> <p> </p> <p><strong>References:</strong><br> [1] Schneiderwind, C., Neidhardt, A., "Data Set: A Collection of BRIRs for a Listener Wearing Different Types of Open Headphones", DAGA 2021, Wien, Austria, August 2021.<br> [2] Schneiderwind, C., Neidhardt, A., and Meyer, D., “Comparing the effect of different open headphone models on the<br> perception of a real sound source,” 150th AES Convention, Online, June 2021. </p>
Dataset of KEMAR-BRIRs measured at several positions and head orientations in a real room
<p>Measurement of BRIRs at 25 positions (1-25) in a reverberant room for two sound sources (A,B). The dummy head is rotated by 360° counterclockwise in 5° steps, respectively, at every position. The measuring points are arranged at a distance of 0.5m in x and y axis, respectively. The sound sources are arranged at a distance of 1.0m from the measuring grid.</p> <p>A whole description of the measurement can be found in:<br> http://opac.lbs-ilmenau.gbv.de/DB=1/SET=1/TTL=2/SHW?FRST=1<br> or contact stephan.werner@tu-ilmenau.de</p> <p>Sketch of the measuring grid:</p> <p> A<br> |<br> |<br> 5 - 4 - 3 - 2 - 1<br> | | | | |<br> 10 - 9 - 8 - 7 - 6<br> | | | | |<br> B - -15 - 14 - 13 - 12 - 11<br> | | | | |<br> 20 - 19 - 18 - 17 - 16<br> | | | | |<br> 25 - 24 - 23 - 22 - 21</p>
BRIR data set for interactive listener translation in two rooms
<p>This BRIR data set was measured with a Kemar 45BA at 9 different positions along a defined translation line with a length of 2m in two different rooms, a listening laboratory (T60 = 0.27s) and a seminar room (T60 = 1.0s). At each position BRIRs for a full 360° head rotation with an azimuth resolution of 4° were captured. Two Genelec 1030A loudspeakers served as the sound sources, one place in the fron of the line, one at the side. In addition, omni-directional room impulse responses were determined of the 9 positions at the center the head in both rooms.</p> <p>The data set is of interest to study dynamic binaural synthesis for walking towards or past a sound source in two different room acoustical settings. The same source and receiver setup was used in both rooms, therefore the direct sound and its progress along the given translation line is similar.</p>
360° Binaural Room Impulse Response (BRIR) Database for 6DOF spatial perception research
<p>by Applied Psychoacoustics Lab, University of Huddersfield</p> <p> </p> <p>Authors: Bogdan Bacila and Hyunkook Lee</p> <p>bogdan.bacila@hud.ac.uk, h.lee@hud.ac.uk</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>
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