I was hoping someone could help me understand the Q-Value in parametric EQs. I know larger values correspond to wider frequency bands affected by the gain/suppression you specify, but how are the frequency ranges calculated from the values you set (0.5-6.4 on my Rockboxed Clip+)? I've tried finding the info myself, but apparently my google-fu isn't good enough...
Basically, I've been trying to equalise my SCL2s, and have identified the following peaks:
10500-7500Hz, peaking at 8800
6000-3700Hz, peaking at 5000
1000-450Hz, peaking at 850/930
The Rockbox EQ allows you to specify Gain, Peak and Q settings for Low Shelf, High Shelf, and three peaks.
So I've set the peak frequencies to 890, 5000 and 8800Hz, but what values should I set for Q, for the 650, 2300 and 3000Hz ranges?
Cheers in advance for any help ;)