Parametric Spatial Audio Processing of Spaced Microphone Array Recordings for Multichannel Reproduction

Politis, Archontis; Laitinen, Mikko-Ville; Ahonen, Jukka; Pulkki, Ville

doi:10.17743/jaes.2015.0015

Cited by 21 publications

(21 citation statements)

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“…It was decided to use spatial recordings with a microphone array because such arrays have been a major category of recording approaches for multichannel sound reproduction (Politis et al, 2015), as they are the natural extension of the principles inherited from traditional stereophonic recording techniques. It was thus a way of presenting a binaural stimulus from a realistic system, likely to be employed in the context of real-world multichannel recording.…”

Section: A Stimulusmentioning

confidence: 99%

Influence of head tracking on the externalization of speech stimuli for non-individualized binaural synthesis

Hendrickx

Stitt

Messonnier

et al. 2017

The Journal of the Acoustical Society of America

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Binaural reproduction aims at recreating a realistic audio scene at the ears of the listener using headphones. In the real acoustic world, sound sources tend to be externalized (that is perceived to be emanating from a source out in the world) rather than internalized (that is perceived to be emanating from inside the head). Unfortunately, several studies report a collapse of externalization, especially with frontal and rear virtual sources, when listening to binaural content using non-individualized Head-Related Transfer Functions (HRTFs). The present study examines whether or not head movements coupled with a head tracking device can compensate for this collapse. For each presentation, a speech stimulus was presented over headphones at different azimuths, using several intermixed sets of non-individualized HRTFs for the binaural rendering. The head tracker could either be active or inactive, and the subjects could either be asked to rotate their heads or to keep them as stationary as possible. After each presentation, subjects reported to what extent the stimulus had been externalized. In contrast to several previous studies, results showed that head movements can substantially enhance externalization, especially for frontal and rear sources, and that externalization can persist once the subject has stopped moving his/her head.

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Section: A Stimulusmentioning

confidence: 99%

Influence of head tracking on the externalization of speech stimuli for non-individualized binaural synthesis

Hendrickx

Stitt

Messonnier

et al. 2017

The Journal of the Acoustical Society of America

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“…These gains are computed according to the ideal coherence of cardioid patterns in an ideal diffuse field [11]. A detailed presentation of their derivation is presented in [6] for a custom spaced microphone array. Furthermore, it suggested that only the L, R, LS, and RS channels are used for the diffuse stream outputs as they are more uniformly arranged and less coherent between them than with the center channel included.…”

Section: Synthesis Of Output Channelsmentioning

confidence: 99%

“…This separation enables accurate and stable localization along with good sense of envelopment and depth in reproduction. Using DirAC with spaced microphones was introduced in [5,6]. In these studies, the methods were presented for a general case, and the example microphones arrays were optimized for DirAC processing.…”

Section: Introductionmentioning

confidence: 99%

Spatial audio coding with spaced microphone arrays for music recording and reproduction.

Politis¹,

Laitinen²,

Pulkki³

2013

Proceedings of Meetings on Acoustics

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“…Directional Audio Coding (DirAC) [2] represents an important paradigm in the family of parametric approaches, providing an efficient description of spatial sound in terms of a few audio downmix signals and parametric side information, namely the Direction-of-Arrival (DOA) and diffuseness of the sound. While originally designed for differential microphone signals, an adaptation of DirAC to compact planar microphone arrays with omnidirectional sensors has been described in [3], [4] and an adaptation to spaced microphone arrangements in [5]. In the same direction, the approach in [6] presents an example about how the principles of parametric spatial audio can be exploited for the case of a linear microphone array.…”

Section: Introductionmentioning

confidence: 99%

Capturing and reproduction of a crowded sound scene using a circular microphone array

Stefanakis

Mouchtaris

2016

2016 24th European Signal Processing Conference (EUSIPCO)

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Over the years, different spatial audio techniques have been proposed as the means to capture, encode and reproduce the spatial properties of acoustic fields, yet specific issues need to be modified each time in accordance to the type of microphone array used as well as with the technology used for reproduction. Using a circular array of omnidirectional microphones, we formulate in this paper a parametric and a non-parametric approach for capturing and reproduction of the crowded acoustic environment of a football stadium. A listening test performed reveals the advantages and disadvantages of each approach in connection to the particularities of the acoustic environment.

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Parametric Spatial Audio Processing of Spaced Microphone Array Recordings for Multichannel Reproduction

Cited by 21 publications

References 0 publications

Influence of head tracking on the externalization of speech stimuli for non-individualized binaural synthesis

Influence of head tracking on the externalization of speech stimuli for non-individualized binaural synthesis

Spatial audio coding with spaced microphone arrays for music recording and reproduction.

Capturing and reproduction of a crowded sound scene using a circular microphone array

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