Design of a Ceiling-Microphone Array for Speech Applications with Focus on Transducer Arrangements and Beamforming Techniques

Publikation: Konferenzbeitrag › Paper › Forschung

Autoren

  • Jürgen Karl Peissig
  • Christian Mortsiefer

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Details

OriginalspracheEnglisch
PublikationsstatusVeröffentlicht - 2017
VeranstaltungDAGA 2017: 43. Jahrestagung für Akustik - Kiel, Deutschland
Dauer: 6 März 2017 → 9 März 2017

Konferenz

KonferenzDAGA 2017
Land/GebietDeutschland
OrtKiel
Zeitraum6 März 2017 → 9 März 2017

Abstract

A microphone array increases the speech intelligibility in challenging acoustic situations. By creating a highly directive pick-up pattern, influences such as room reflections (i.e. diffuse noise) and other spatial noise sources can be minimized. In the course of this work, various planar microphone arrangements are discussed and subsequently combined with different types of fixed beamforming techniques. A special focus has been taken on spiral and spiral-like topologies that are compared to each other for Delay-and-Sum (DS), Minimum-VarianceDistortionless-Response (MVDR) and a particular case of Filter-and-Sum (FS) beamforming, i.e. the WeightedLeast-Squares (WLS) optimization. Fundamentals of Microphone Arrays A general system model according to Fig. 1 can be used to derive the basic equations for a microphone array being composed of an arbitrary microphone topology and a choice of fixed beamforming weights. Considering a Collapse

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Design of a Ceiling-Microphone Array for Speech Applications with Focus on Transducer Arrangements and Beamforming Techniques. / Peissig, Jürgen Karl; Mortsiefer, Christian.
2017. Beitrag in DAGA 2017, Kiel, Deutschland.

Publikation: Konferenzbeitrag › Paper › Forschung

Peissig, Jürgen Karl ; Mortsiefer, Christian. / Design of a Ceiling-Microphone Array for Speech Applications with Focus on Transducer Arrangements and Beamforming Techniques. Beitrag in DAGA 2017, Kiel, Deutschland.
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