Least squares versus non-linear cost functions for a virtual artificial head

Rasumow, Eugen; Blau, Matthias; Doclo, Simon; Hansen, Martin; Par, Steven van de; Püschel, Dirk; Mellert, Volker

doi:10.1121/1.4806340

Cited by 9 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note that it is not a fundamental requirement that the microphone array is spherical. A method using an arbitrary microphone arrangement together with numerically optimal rendering was presented in Rasumow et al (2013).…”

mentioning

confidence: 99%

Perceptual evaluation of headphone auralization of rooms captured with spherical microphone arrays with respect to spaciousness and timbre

Ahrens

Andersson

2019

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

A listening experiment is presented in which subjects rated the perceived differences in terms of spaciousness and timbre between a headphone-based headtracked dummy head auralization of a sound source in different rooms and a headphone-based headtracked auralization of a spherical microphone array recording of the same scenario. The underlying auralizations were based on measured impulse responses to assure equal conditions. Rigid-sphere arrays with different amounts of microphones ranging from 50 to up to 1202 were emulated through sequential measurements, and spherical harmonics orders of up to 12 were tested. The results show that the array auralizations are partially indistinguishable from the direct dummy head auralization at a spherical harmonics order of 8 or higher if the virtual sound source is located at a lateral position. No significant reduction of the perceived differences with increasing order is observed for frontal virtual sound sources. In this case, small differences with respect to both spaciousness and timbre persist. The evaluation of lowpass-filtered stimuli shows that the perceived differences occur exclusively at higher frequencies and can therefore be attributed to spatial aliasing. The room had only a minor effect on the results.

show abstract

mentioning

confidence: 99%

Perceptual evaluation of headphone auralization of rooms captured with spherical microphone arrays with respect to spaciousness and timbre

Ahrens

Andersson

2019

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

show abstract

“…Different techniques have been developed to find the frequency dependent weights [27,28]. In this work, we will estimate the microphone weights W i ( f ) from a regularized least-square solution of the discretized version of Eq.…”

Section: Hrtf Directivity Pattern Fittingmentioning

confidence: 99%

“…More complex expressions for the regularization term exist, e.g. with direct inclusion of the desired white noise gain (WNG) in the regularization term [28,29].…”

Section: Hrtf Directivity Pattern Fittingmentioning

confidence: 99%

Measurement-based auralization methodology for the assessment of noise mitigation measures

Thomas

Wei

Renterghem

et al. 2016

Journal of Sound and Vibration

View full text Add to dashboard Cite

The effect of noise mitigation measures is generally expressed by noise levels only, neglecting the listener's perception. In this study, an auralization methodology is proposed that enables an auditive preview of noise abatement measures for road traffic noise, based on the direction dependent attenuation of a priori recordings made with a dedicated 32-channel spherical microphone array. This measurement-based auralization has the advantage that all non road traffic sounds that create the listening context are present. The potential of this auralization methodology is evaluated through the assessment of the effect of an L-shaped mound. The angular insertion loss of the mound is estimated by using the ISO 9613-2 propagation model, the Pierce barrier diffraction model and the Harmonoise point-to-point model. The realism of the auralization technique is evaluated by listening tests, indicating that listeners had great difficulty in differentiating between a posteriori recordings and auralized samples, which shows the validity of the followed approaches.

show abstract

“…However, it is difficult to simultaneously bring the binaural signals to multiple listeners. One of the promising approaches is binaural reproduction from microphone array recordings [9][10][11][12][13][14][15] . Owing to the recent developments of spatial soundfield recording techniques, it is becoming possible to estimate a soundfield inside a region using multiple microphones 3,[16][17][18][19][20] .…”

Section: Introductionmentioning

confidence: 99%