6533b837fe1ef96bd12a3055

RESEARCH PRODUCT

Automatic Detection and Characterization of Acoustic Plane-Wave Reflections Using Circular Microphone Arrays

Jaume SeguraA. M. TorresMaximo CobosFrancesc J. Ferri

subject

Microphone arrayMicrophoneComputer scienceSpeech recognitionAcousticsPlane waveDirection of arrivalImpulse (physics)Hough transformlaw.inventionComputer Science::SoundlawNoise-canceling microphoneMicrophone array processing

description

The spatial characteristics of the sound field inside a room can be meaningfully described by means of microphone array processing techniques. In this context, the set of impulse responses sampled by a microphone array can be seen as an image made of acoustic plane-wave footprints. Due to the circular geometry of the microphone array, these footprints have a cosine-like shape that can be fully described as a function of the direction of arrival (DOA) of the impinging plane wave. This paper proposes a Hough-transform-based approach to plane-wave detection in microphone array multi-trace impulse responses. Experiments using a set of real microphone recordings are described, showing the potential of well-known image-processing techniques in sound field analysis.

yearjournalcountryeditionlanguage
2013-01-01
https://doi.org/10.1007/978-3-642-38628-2_92