Multigrid reconstruction of sound fields using moving microphones


A multi-resolution technique is presented for sound field recovery based on measurements of one or multiple moving microphones. The interpolation of the spatial samples enables us to set up a system of linear equations that recovers room impulse responses on a virtual uniform grid in space. The spacing of the virtual grid must be very small when directly recovering for the entire bandwidth, thus, the system to be solved requires a large number of measurement positions. In this work, we propose two recovery schemes based on multiple virtual grids that represent distinct sub-bands of the spatiotemporal sound field. This allows for faster reconstruction of low frequencies at minor computational cost and improves the recovery quality when measurement noise is present.
Original languageEnglish
Title of host publication2017 Hands-free Speech Communications and Microphone Arrays (HSCMA)
Number of pages5
Publication date01.03.2017
Article number7895588
ISBN (Print)978-1-5090-5926-3
ISBN (Electronic)978-1-5090-5925-6
Publication statusPublished - 01.03.2017
Event2017 Hands-Free Speech Communications and Microphone Arrays - San Francisco, United States
Duration: 01.03.201703.03.2017
Conference number: 127366


Dive into the research topics of 'Multigrid reconstruction of sound fields using moving microphones'. Together they form a unique fingerprint.

Cite this