In professional audio applications, small loudspeakers are often mounted on or near (within the loudspeaker `s near field region) large solid surfaces, such as mixing consoles, desktops and work surfaces. In approximately two-thirds of loudspeakers mounted in such a fashion, the magnitude response is compromised in a predictable and systematic way. An upward deviation of peak value 5.0dB ±1.5dB centred on 141Hz ±31Hz was observable in approximately 80% of the cases studied. An additional Room Response Control in active loudspeakers is proposed to compensate for this aberration. A statistical analysis of 89 near-field loudspeakers helps define the correction filter, and quantifies the effectiveness of the fixed filter design. Use of the proposed filter in an automated response optimisation algorithm for in-situ response equalisation is demonstrated.
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https://aes2.org/publications/elibrary-page/?id=12838
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