Fruity and Ableton EQ question in regards to sectioned bands?

[squidman90]

hey there

this is a question regarding the vertical graph lines of frequency bands displayed on the EQ in both Ableton's EQ 8 and Fruity Loops EQ. Why doesn't it evenly space out the band sections. You will notice that 200hz band is bigger than others why is that?

 

[bandcoach]

because frequency, like intensity, is logarithmic in nature not linear - a doubling in frequency is the same as making it an octave higher and vice versa

200Hz is one octave higher than 100Hz and 1 octave lower than 400Hz and 2 octaves lower than 800Hz and 3 octaves lower than 1600Hz if you look at the distance between each of those frequencies in a logarithmic scale they are roughly equal

when we look at the relationship of these 5 frequencies we also can see that we are talking about

100Hz x 2[sup]0[/sup] = 100Hz x 1 = 100Hz
100Hz x 2[sup]1[/sup] = 100Hz x 2 = 200Hz
100Hz x 2[sup]2[/sup] = 100Hz x 4 = 400Hz
100Hz x 2[sup]3[/sup] = 100Hz x 8 = 800Hz
100Hz x 2[sup]4[/sup] = 100Hz x 16 = 1600Hz