On the Design and Implementation of Higher Order Differential Microphones

Sena, Enzo De; Hacıhabiboğlu, Hüseyin; Cvetković, Zoran

doi:10.1109/tasl.2011.2159204

Cited by 110 publications

(61 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, methods employing both time and level differences have regularly proven among the most naturally sounding and realistic of spatial microphone techniques [11]. Another advantage of time-intensity systems, as it will become evident in the following, is that they require microphones with lower spatial selectivity, which are less challenging to design and build [19], [20], [22].…”

Section: A Design Of Coincident Arraysmentioning

confidence: 99%

“…Directivity patterns which provide corresponding ICLDs, as given by curves and , must satisfy (18) In the symmetric case these constraints become (19) The constraints in (19) only specify end-points of the directivity pattern. One possible way of achieving gradual source displacement between these end points is to modify the tangent law in (14) according to (20) where has the role of reducing intensity differences to account for the presence of time differences. A particular value of is obtained by equating with , which yields (21) The directivity pattern defined in (20) will be referred to as timeintensity directivity (TID).…”

Section: B Design Based On Time-intensity Psychoacoustic Lawsmentioning

confidence: 99%

“…One possible way of achieving gradual source displacement between these end points is to modify the tangent law in (14) according to (20) where has the role of reducing intensity differences to account for the presence of time differences. A particular value of is obtained by equating with , which yields (21) The directivity pattern defined in (20) will be referred to as timeintensity directivity (TID).…”

Section: B Design Based On Time-intensity Psychoacoustic Lawsmentioning

confidence: 99%

See 2 more Smart Citations

Analysis and Design of Multichannel Systems for Perceptual Sound Field Reconstruction

Sena

Hacıhabiboğlu

Cvetković

2013

IEEE Trans. Audio Speech Lang. Process.

View full text Add to dashboard Cite

Abstract-This paper presents a systematic framework for the analysis and design of circular multichannel surround sound systems. Objective analysis based on the concept of active intensity fields shows that for stable rendition of monochromatic plane waves it is beneficial to render each such wave by no more than two channels. Based on that finding, we propose a methodology for the design of circular microphone arrays, in the same configuration as the corresponding loudspeaker system, which aims to capture inter-channel time and intensity differences that ensure accurate rendition of the auditory perspective. The methodology is applicable to regular and irregular microphone/speaker layouts, and a wide range of microphone array radii, including the special case of coincident arrays which corresponds to intensity-based systems. Several design examples, involving first and higher-order microphones are presented. Results of formal listening tests suggest that the proposed design methodology achieves a performance comparable to prior art in the center of the loudspeaker array and a more graceful degradation away from the center.Index Terms-Active intensity, microphone array, microphone directivity, multichannel audio, spatial hearing, surround sound recording, tangent panning law, time-intensity trading.

show abstract

Section: A Design Of Coincident Arraysmentioning

confidence: 99%

Section: B Design Based On Time-intensity Psychoacoustic Lawsmentioning

confidence: 99%

Section: B Design Based On Time-intensity Psychoacoustic Lawsmentioning

confidence: 99%

See 1 more Smart Citation

Analysis and Design of Multichannel Systems for Perceptual Sound Field Reconstruction

Sena

Hacıhabiboğlu

Cvetković

2013

IEEE Trans. Audio Speech Lang. Process.

View full text Add to dashboard Cite

show abstract

“…The development of techniques for higher-order differential microphone arrays (DMA) [56], [57] enabled design of more sophisticated directivity patterns than those achievable by commonly used first-order microphones. This allowed the implementation of different panning laws and psychoacoustical panning functions in the multichannel microphone array design process.…”

Section: Perceptual Sound Field Reconstructionmentioning

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.

View full text Add to dashboard Cite

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.

show abstract

“…Due to the fact that higher-order DMAs are more sensitive to microphone mismatches and self-noise, lower-order DMAs, i.e., first-and second-order DMAs, are mostly studied in practice [2][3][4][5][6][7][8]. It is noted that the mainlobe orientation of conventional first-and second-order DMAs is fixed and non-steerable, i.e., along the array endfire direction.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of second-order steerable differential microphone arrays

Chen

2017

2017 25th European Signal Processing Conference (EUSIPCO)

View full text Add to dashboard Cite

Second-order differential microphone arrays (DMAs) are one of the most commonly used DMAs in practice due to the sensitivity of higher-order DMAs to microphone mismatches and self-noise. However, conventional second-order DMAs are non-steerable with their mainlobe orientation fixed along the array endfire direction, which are not applicable to the case where sound sources may move around a large angular range. In this paper, we propose a design of second-order steerable DMAs (SOSDAs) using seven microphones. The design procedure is discussed, followed by the theoretical analysis on directivity factor and white noise gain of the proposed SOSDAs. Numerical examples are shown to demonstrate the effectiveness of the proposed design and its theoretical analysis.Index Terms-Differential microphone array, steerable beamforming, superdirective beamforming.

show abstract

On the Design and Implementation of Higher Order Differential Microphones

Cited by 110 publications

References 19 publications

Analysis and Design of Multichannel Systems for Perceptual Sound Field Reconstruction

Analysis and Design of Multichannel Systems for Perceptual Sound Field Reconstruction

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

Design and analysis of second-order steerable differential microphone arrays

Contact Info

Product

Resources

About