AES Paris 2016
Paper Session P17

P17 - Rendering Systems

Monday, June 6, 14:45 — 16:45 (Room 353)

Libor Husnik, Czech Technical University in Prague, Faculty of Electrical Engineering - Prague Czech Republic

P17-1 Optimized Spatial Layout for Virtual Spatial Audio ConferenceLiyun Pang, Huawei Technologies Duesseldorf GmbH - Düsseldorf, Germany; European Research Center - Munich, Germany; Pablo Hoffmann, Huawei Technologies Düsseldorf GmbH - Düsseldorf, Germany
This paper is related to three-dimensional (3D) audio signal processing for virtual spatial audio conference applications. The core idea is to provide users of a virtual spatial audio conference with recommendations for the optimal spatial layout (spatial arrangement) of participants where optimal implies maximal speech intelligibility. That is, the listener’s ability to understand speech from an individual speaker in a multi-speaker scenario is enhanced. The idea combines information of the individual’s voice together with directional audio information to estimate the speech intelligibility of candidate spatial layouts (spatial arrangement). The candidate layout that provides the best speech intelligibility estimate is then selected.
Convention Paper 9573 (Purchase now)

P17-2 A Listener Adaptive Optimal Source Distribution System for Virtual Sound ImagingMarcos F. Simon Galvez, University of Southampton - Southampton, Hampshire, UK; Takeshi Takeuchi, University of Southampton - Southampton, Hampshire, UK; Filippo Maria Fazi, University of Southampton - Southampton, Hampshire, UK
This paper describes the use of an optimal source distribution loudspeaker array for binaural reproduction. In this paper the device is made adaptive to the listener’s position. This is obtained by using a fixed set of crosstalk cancellation filters created for a central listening position plus a listener-position dependent delay network, which varies the delay of each loudspeaker unit to maximize the cross-talk cancellation response at the listener’s position. The paper introduces the formulation required for the adaptive control and simulated results predicting the performance of the device for symmetrical and asymmetrical listening positions. It is also shown how the proposed formulation has been implemented on a Sherwood S7 OPSODIS soundbar.
Convention Paper 9574 (Purchase now)

P17-3 Multizone Soundfield Reproduction with Virtual Elevations Using a Linear Loudspeaker ArrayWenyu Jin, Huawei Technologies Düsseldorf GmbH - Düsseldorf, Germany; European Research Center - Munich, Germany; Milos Markovic, Huawei Technologies Düsseldorf GmbH - Düsseldorf, Germany; European Research Center - Munich, Germany; Liyun Pang, Huawei Technologies Duesseldorf GmbH - Düsseldorf, Germany; European Research Center - Munich, Germany
Multizone soundfield reproduction has drawn the researchers' attention recently. The paper introduces a soundfield rendering system for a simultaneous reproduction of sound sources with different elevations over multiple listening areas using a linear loudspeaker array. A novel method based on the usage of HRTF (Head Related Transfer Function) spectral elevation cues in conjunction with a horizontal multi-zone sound rendering system is proposed. The proposed method is in a dual-band manner and it aims to accurately reproduce the desired 3-D elevated sound with the consideration of HRTF cues within the selected listening zones, while also minimizing the sound leakage to the targeted quiet zones over the entire audio frequency range. A listening test is conducted and the results confirm the feasibility of simultaneous multizone soundfield rendering with different elevation using a single 2-D loudspeaker array.
Convention Paper 9575 (Purchase now)

P17-4 Characterization of the Acoustical Directivity of a Speaker on a Sound Bar Enclosure: A Comparison between Measurements, Boundary Element Method, and a Spheroidal Analytical ModelVincent Roggerone, Ecole Polytechnique - Palaiseau, France; Xavier Boutillon, Ecole Polytechnique - Palaiseau, France; Etienne Corteel, Sonic Emotion Labs - Paris, France
The directivity of a sound bar of slender shape is analyzed. Measurements are compared to the results of a boundary element method. A good agreement is obtained in the low-mid frequency range. In order to reduce the computing time, a geometrical approximation based on a spheroidal analytical model is also considered. This approximation holds up to a certain frequency. The spheroid shape produces a more regular sound field pattern.
Convention Paper 9576 (Purchase now)

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