LoRA: A Loudspeaker-Based Room Auralization System

Favrot, Sylvain Emmanuel; Buchholz, Jörg M.

doi:10.3813/aaa.918285

Cited by 63 publications

(67 citation statements)

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“…Various room auralization systems have been developed in the past twenty years [10], [83], [84]. The DIVA system [10], one of the first parametric interactive room auralization systems, simulates all the first-and secondorder reflections and synthesizes them binaurally or for rendition over loudspeakers.…”

Section: B Perceptually-motivated Artificial Reverberationmentioning

confidence: 99%

Perceptual Spatial Audio Recording, Simulation, and Rendering: An overview of spatial-audio techniques based on psychoacoustics

Hacıhabiboğlu

Sena

Cvetković

et al. 2017

IEEE Signal Process. Mag.

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Abstract-Developments in immersive audio technologies have been evolving in two directions: physicallymotivated and perceptually-motivated systems. Physically motivated techniques aim to reproduce a physically accurate approximation of desired sound fields by employing a very high equipment load and sophisticated computationally intensive algorithms. Perceptually-motivated techniques, on the other hand, aim to render only the perceptually relevant aspects of the sound scene by means of modest computational and equipment load. This article presents an overview of perceptually motivated techniques, with a focus on multichannel audio recording and reproduction, audio source and reflection culling, and artificial reverberators.

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Section: B Perceptually-motivated Artificial Reverberationmentioning

confidence: 99%

Perceptual Spatial Audio Recording, Simulation, and Rendering: An overview of spatial-audio techniques based on psychoacoustics

Hacıhabiboğlu

Sena

Cvetković

et al. 2017

IEEE Signal Process. Mag.

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“…The reproduction room was an acoustically-damped room (4.5 m × 4.4 m × 2.5 m) [27,28,30] built at the Technical University of Denmark, where the reverberation time T 30 was 0.16 s in the 125 Hz octave band, and below 0.1 s for higher frequencies. The loudspeaker was located at (0, 1.8 m).…”

Section: Pre-experiments With One Source Onmentioning

confidence: 99%

“…Multi-zone sound field reproduction methods have the same purpose for each sound zone [12][13][14][15]. Sound field reproduction systems using those reproduction methods have been implemented in several places [16][17][18][19][20][21][22][23][24][25][26][27], and there have been a number of studies on physical validations [17,18,25,26,[28][29][30] and perceptual evaluations [17][18][19][20]22,28,[30][31][32][33] with the reproduction systems. There are spatial [17,18,25,26,28,30], temporal, and spectral features [29] in the physical validations, which are related to perceptual attributes, such as localization, source width, and sound quality.…”

Section: Introductionmentioning

confidence: 99%

A Measure Based on Beamforming Power for Evaluation of Sound Field Reproduction Performance

Chang

Jeong

2017

Applied Sciences

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This paper proposes a measure to evaluate sound field reproduction systems with an array of loudspeakers. The spatially-averaged squared error of the sound pressure between the desired and the reproduced field, namely the spatial error, has been widely used, which has considerable problems in two conditions. First, in non-anechoic conditions, room reflections substantially deteriorate the spatial error, although these room reflections affect human localization to a lesser degree. Second, for 2.5-dimensional reproduction of spherical waves, the spatial error increases consistently due to the difference in the amplitude decay rate, whereas the degradation of human localization performance is limited. The measure proposed in this study is based on the beamforming powers of the desired and the reproduced fields. Simulation and experimental results show that the proposed measure is less sensitive to room reflections and the amplitude decay than the spatial error, which is likely to agree better with the human perception of source localization.

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“…A 24-channel impulse response based on the location of each loudspeaker in the circular array was generated using the auralization system developed by Favrot and Buchholz (2010). Examples of the first 100 ms of these responses for rooms with α values of 0.2, 0.5 and 0.8 are shown in Figure 1.…”

Section: Stimulimentioning

confidence: 99%

The sensitivity of hearing-impaired adults to acoustic attributes in simulated rooms

Whitmer

McShefferty

Akeroyd

2013

The Journal of the Acoustical Society of America

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In previous studies we have shown that older hearing-impaired individuals are relatively insensitive to changes in the apparent width of broadband noises when those width changes were based on differences in interaural coherence [W. Whitmer, B. Seeber and M. Akeroyd, J. Acoust. Soc. Am. 132, 369-379 (2012)]. This insensitivity has been linked to senescent difficulties in resolving binaural fine-structure differences. It is therefore possible that interaural coherence, despite its widespread use, may not be the best acoustic surrogate of spatial perception for the aged and impaired. To test this, we simulated the room impulse responses for various acoustic scenarios with differing coherence and lateral (energy) fraction attributes using room modelling software (ODEON). Bilaterally impaired adult participants were asked to sketch the perceived size of speech tokens and musical excerpts that were convolved with these impulse responses and presented to them in a sound-dampened enclosure through a 24-loudspeaker array. Participants' binaural acuity was also measured using an interaural phase discrimination task. Corroborating our previous findings, the results showed less sensitivity to interaural coherence in the auditory source width judgments of older hearing-impaired individuals, indicating that alternate acoustic measurements in the design of spaces for the elderly may be necessary.

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LoRA: A Loudspeaker-Based Room Auralization System

Cited by 63 publications

References 0 publications

Perceptual Spatial Audio Recording, Simulation, and Rendering: An overview of spatial-audio techniques based on psychoacoustics

Perceptual Spatial Audio Recording, Simulation, and Rendering: An overview of spatial-audio techniques based on psychoacoustics

A Measure Based on Beamforming Power for Evaluation of Sound Field Reproduction Performance

The sensitivity of hearing-impaired adults to acoustic attributes in simulated rooms

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