ROOM_E0UALIZER

Published:2009/6/29 23:48:00 Author:May | From:SeekIC

Ten-octave equalizer is combined with pink-noise generator in such away that all but one octave band can be switiched out,Mith pink noise passed through remaining filter to power amplifier and loudspeaker，Microphone with flat frequency response over audio band is used to pick up resulting noise at some center listening point in room being equalized. Ampllfied output ot microphone drives VU meter where arbitrary level is established for one filter section. Other filter sections are then switched in one at a time and adjusted to give same VU reading. Equalizer settings then give flat room response for all ten octaves. High end can then be rolled off or low end boosted to suit personal preference. Adjustments are readily repeated when fumiture is changed in room. Table gives values of C1 for each octave.- Audio Handbook, National Semiconductor, Santa Clara, CA, 1977, p 2-53.-2-59.



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