Analytical Ellipsoidal Model of Interaural Time Differences for the Individualization of Head-Related Impulse Responses

Bomhardt, Ramona; Lins, Marcia; Fels, Janina

doi:10.17743/jaes.2016.0041

Cited by 16 publications

(25 citation statements)

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“…With this in mind, it is essential to include individualization processes in sound reproduction in the listening experiment implementation. For example, these individualization processes adjust head-related transfer functions (Bomhardt & Fels, 2014) according to children’s smaller head and ear sizes. Thus, it is possible to provide a more plausible sound perception for children.…”

Section: Children’s Auditory Selective Attentionmentioning

confidence: 99%

Children’s intentional switching of auditory selective attention in spatial and noisy acoustic environments in comparison to adults.

Loh¹,

Fintor²,

Nolden³

et al. 2022

Developmental Psychology

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am MainChildren's development and education take place in educational buildings with highly complex acoustic scenes, including spatially distributed target speakers, many surrounding distracting sounds, and general background noises. Auditory selective attention, therefore, is a valuable tool to orient oneself, to focus on specific sound sources, and to extract relevant information. Until now, it is unknown to what extent children have developed the cognitive processes of intentional attention control in spatial situations and how they differ from adults. This work provides a paradigm to examine children's intentional switching of auditory selective attention that also allows to examine effects due to noisy and spatial sound environments presented virtually via headphones. A listening experiment was conducted in Germany with 24 children (6-10 years, 50% female) and 24 young adults (18-26 years, 50% female). First, results revealed higher error rates and lower reaction times in conditions with noise (relative to conditions without noise) for children, but not for adults. This assumes that children are more sensitive to noise and conclude faster with noise trials, taking errors into account. Second, although auditory attention flexibility reflected in attention switch and relevant information selection was comparable between children and adults, it was found that adults benefited from spatial cues when selecting the relevant information. This was not observed to the same extent in children. These results suggest that children's cognitive processes are affected at significantly lower noise levels than adults and that noise effect assessment methods should consider spatial aspects.

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Section: Children’s Auditory Selective Attentionmentioning

confidence: 99%

Children’s intentional switching of auditory selective attention in spatial and noisy acoustic environments in comparison to adults.

Loh¹,

Fintor²,

Nolden³

et al. 2022

Developmental Psychology

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“…4 If the sum over the interaural level difference in the horizontal plane is not zero, this implies either a translational misalignment or an asymmetry of the subject. In the database, it was assumed that the level offset ∆L = 1±4 dB was primarily forced by the translation misalignment.…”

Section: Individual Head-related Transfer Function Measure-mentsmentioning

confidence: 99%

A high-resolution head-related transfer function and three-dimensional ear model database

Bomhardt

Klein

Fels

2016

Proceedings of Meetings on Acoustics

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“…Spatial audio reproduction systems based on binaural technology using HRTFs reproduce the source signal of a virtual sound source (VSS) in an acoustic environment physically correct at the ear drum of the listener (Blauert, 1997). Highest authenticity, with minimal influence of the reproduction device and the environment, can be most effectively achieved by playing back binaural signals over HPs using individual (Richter & Fels, 2016) or individualized HRTF data sets (Bomhardt & Fels, 2014) in combination with perceptually robust HP equalization (Masiero & Fels, 2011;Oberem, Masiero, & Fels, 2016;Pralong & Carlile, 1996). For binaural reproduction over LSs, a set of acoustic CTCs filters is usually applied (Atal, Hill, & Schroeder, 1966;Bauer, 1961).…”

Section: Spatial Audio Reproduction Systems Previous Work and State Of The Artmentioning

confidence: 99%

“…These impulse responses are generated separately as binaural filters with respect to the listener's ear canal entrance, based on HRTFs, or as filters with respect to HA sensors, based on HARTFs. HRTFs can either be acquired through measurements from individuals with open or blocked meatus (Oberem et al, 2016) using a fast measurement system (Richter & Fels, 2016), from an artificial head (Algazi, Duda, Thompson, & Avendano, 2001;Gardner & Martin, 1995;Schmitz, 1995), by individualizing generic data sets through incorporating anthropometric data (Bomhardt & Fels, 2014), or by means of numerical simulations (Fels, Buthmann, & Vorla¨nder, 2004;Katz, 2001). Similarly, HARTF data are acquired through measurements of direction-dependent transfer functions at the HAs' microphone positions (Kayser et al, 2009;Denk, Ernst, Ewert, & Kollmeier, 2018 impulse responses, merged with room acoustic filters, with anechoically recorded sound files (Vorla¨nder, 2007) results in binaural head-related and HA-related signals.…”

Section: Concept Of An Extended Binaural Real-time Auralization Systemmentioning

confidence: 99%

An Extended Binaural Real-Time Auralization System With an Interface to Research Hearing Aids for Experiments on Subjects With Hearing Loss

et al. 2018

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Theory and implementation of acoustic virtual reality have matured and become a powerful tool for the simulation of entirely controllable virtual acoustic environments. Such virtual acoustic environments are relevant for various types of auditory experiments on subjects with normal hearing, facilitating flexible virtual scene generation and manipulation. When it comes to expanding the investigation group to subjects with hearing loss, choosing a reproduction system which offers a proper integration of hearing aids into the virtual acoustic scene is crucial. Current loudspeaker-based spatial audio reproduction systems rely on different techniques to synthesize a surrounding sound field, providing various possibilities for adaptation and extension to allow applications in the field of hearing aid-related research. Representing one option, the concept and implementation of an extended binaural real-time auralization system is presented here. This system is capable of generating complex virtual acoustic environments, including room acoustic simulations, which are reproduced as combined via loudspeakers and research hearing aids. An objective evaluation covers the investigation of different system components, a simulation benchmark analysis for assessing the processing performance, and end-to-end latency measurements.

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Analytical Ellipsoidal Model of Interaural Time Differences for the Individualization of Head-Related Impulse Responses

Cited by 16 publications

References 0 publications

Children’s intentional switching of auditory selective attention in spatial and noisy acoustic environments in comparison to adults.

Children’s intentional switching of auditory selective attention in spatial and noisy acoustic environments in comparison to adults.

A high-resolution head-related transfer function and three-dimensional ear model database

An Extended Binaural Real-Time Auralization System With an Interface to Research Hearing Aids for Experiments on Subjects With Hearing Loss

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