Compensating the Response of Near-Field Loudspeaker Monitors to Minimize the Effects of Desktop Acoustic Loading

Goldberg A, Mäkivirta A, Varla A. Compensating the Response of Near-Field Loudspeaker Monitors to Minimize the Effects of Desktop Acoustic Loading. J Audio Eng Soc. 2006;54(5):401-411. Available from: https://aes.org/publications/elibrary-page/?id=13683

@article{Goldberg2006_13683,
  author = {Goldberg, Andrew and Mäkivirta, Aki and Varla, Ari},
  title = {{Compensating the Response of Near-Field Loudspeaker Monitors to Minimize the Effects of Desktop Acoustic Loading}},
  journal = {Journal of the Audio Engineering Society},
  volume = {54},
  number = {5},
  pages = {401--411},
  year = {2006},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13683}
}

TY  - JOUR
TI  - Compensating the Response of Near-Field Loudspeaker Monitors to Minimize the Effects of Desktop Acoustic Loading
AU  - Goldberg, Andrew
AU  - Mäkivirta, Aki
AU  - Varla, Ari
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 54
IS  - 5
SP  - 401
EP  - 411
PY  - 2006
DA  - 2006/05/06
UR  - https://aes.org/publications/elibrary-page/?id=13683
PB  - Audio Engineering Society
LA  - en
AB  - In professional audio applications, small loudspeakers are often mounted on or near large solid surfaces, such as mixing consoles, desktops, and work surfaces. When mounted in this manner, the surface is in the near field of the loudspeaker and thus may detrimentally modify its frequency response by acoustic loading. In a majority of cases, analysis reveals that the magnitude response changes in a predictable and systematic way. Changes in acoustic loading raise the magnitude response in the 100–250-Hz region, and reflections cause combing effects at mid to high frequencies. A statistical study of 89 active near-field loudspeakers, located in 45 different installations, revealed that in 80% of the cases a one-sixth-octave-wide peak in the magnitude response at 141 Hz of about 4–6 dB was exhibited. The development of an active correction method is described which minimizes this low-frequency loading problem. It uses a single second-order notch filter to equalize the low-frequency loading effects.
ER  -