What is it about?
This paper explains how to measure loudspeaker impulse response in small rooms. Proposed enhancement is a combination of MLS (Maximum Length Sequence) algorithm and Delay-Sum Beamforming in order to measure frequency response of loudspeakers even in very small and poorly suppressed rooms. Application of the beamforming algorithm allows the extension measure of impulse response by damping reflections from walls, floor and ceiling.
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Why is it important?
The Beamforming method presented in the paper was applied in order to obtain more accurate loudspeaker impulse response in the medium and high frequency range. This method allows to measure impulse response in small rooms without damping walls, floor or ceiling. Moreover, a beamforming method with one microphone with changing position is presented in the paper. Using only one microphone allows to reduce the cost of the measurement equipment and even gives better accuracy.
Perspectives
The work with my colleague gave me better insight into the MLS and beamforming methods. I think it wil be usefull knowledge in my future research.
Dr Robert Wielgat
University of Applied Sciences in Tarnow
Read the Original
This page is a summary of: Enhancement of loudspeaker impulse response measurement using beamforming methods, September 2012, Institute of Electrical & Electronics Engineers (IEEE),
DOI: 10.1109/icses.2012.6382255.
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