Hi,
Sometime ago I noticed in alsamixer there are 4 EQ's with 5 controls each one. For example EQ1 B1, refers to EQ number 1, B1 is the first control, I assume that is the control for the most lower frequencies, and B5 for the most higher. At this point I don't know what is the range in KHz of each control. Does somebody know that? Because I would like to include EQ's for my GUI utility: