Feb 13, 2003 #1 ctris Mechanical Apr 14, 2002 3 Anybody can help on the A-weighted values for 1/12 and 1/24 octave band centre frequency.
Feb 13, 2003 #2 GregLocock Automotive Apr 10, 2001 23,767 Yes. The formula for A weighting at any frequency in dB is given by =10*LOG10(B11^8/((B11^2+20.6^2)^2*(B11^2+12200^2)^2*(B11^2+107.7^2)*(B11^2+737.9^2)))+165.45 where B11 contains the frequency in Hz I've checked this against the standard for each 1/3 oct centre frequency Cheers Greg Locock Upvote 0 Downvote
Yes. The formula for A weighting at any frequency in dB is given by =10*LOG10(B11^8/((B11^2+20.6^2)^2*(B11^2+12200^2)^2*(B11^2+107.7^2)*(B11^2+737.9^2)))+165.45 where B11 contains the frequency in Hz I've checked this against the standard for each 1/3 oct centre frequency Cheers Greg Locock
Feb 17, 2003 Thread starter #3 ctris Mechanical Apr 14, 2002 3 Thanks Greg for the information. Appreciate your help. Cheers Tris Upvote 0 Downvote
