Effect of masker orientation on masking efficacy in soundscape applications
Ong, Zhen Ting
Hong, Joo Young
Chong, Shyh Hao
Date of Issue2017
46th International Congress and Exposition on Noise Control Engineering (INTER-NOISE 2017)
School of Electrical and Electronic Engineering
Digital Signal Processing Lab
Adding desired sounds, also known as auditory masking, to the sonic environment is one of the practiced soundscape implementation strategies. At present, soundscape researchers are evaluating the perceived improvement in pleasantness of the soundscape in the presence of pleasing sounds through listening tests in controlled environments. So far, investigation has been limited to a fixed masker orientation (collocated with the noise source), which is not representative of the real scenario where listeners experience maskers from different orientations in the sonic environment. Hence, to understand the effects of adding wanted sounds to a noisy environment at various orientations, visual stimuli are reproduced in immersive Virtual Reality (VR) headsets paired with open-backed headphones. The visual stimuli for VR are recorded with an omni-directional video camera rig, which was designed in-house, consisting of six cameras. Acoustic stimuli are recorded with an ambisonic microphone attached to the video camera rig. Subjective evaluation to determine the effects of various masker orientations is conducted under controlled laboratory conditions.
© 2017 The Author(s) (Institute of Noise Control Engineering (INCE)). This paper was published in 46th International Congress and Exposition on Noise Control Engineering (INTER-NOISE 2017) and is made available as an electronic reprint (preprint) with permission of Institute of Noise Control Engineering (INCE). The published version is available at: [http://www.ingentaconnect.com/contentone/ince/incecp/2017/00000255/00000003/art00108]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.