To get access to the console, just run the command
eqe core in Terminal or SSH. It will give you a prompt where you can run Lua code.
Once you're done messing around, you can type
exit to exit the console.
Here are some lines of code that you can run that change the EQ:
eqe.preamp = 20 --> set preamp eqe = filters.eq --> create a new peaking EQ band eqe = filters.highpass --> create a new highpass band eqe = nil --> delete a band eqe.load 'name of preset' --> load preset eqe.save 'name of preset' --> save preset eqe.flatten() --> flatten EQ to system default (basically turning it off)
And here's how to change properties of specific band. When changing the gain,
frequency or Q-factor of a band, you will have to run
in order for the changes to take effect:
eqe.gain = -0.5 --> set gain of first band eqe.frequency = 10000 --> set frequency of first band eqe.Q = 0.6 --> set Q-factor of first band eqe.update(1) --> apply changes to EQ
See this thread for more info.
All of the filters were scripted in Lua, found in
/var/tweak/com.r333d.eqe/lua/core/filter. You can create your own custom filter types.
For example, here's the code for the peaking EQ (found in
local super = require 'filter/base/gain' local filter = super:new() function filter:process(omega, alpha, A) local a0 = 1 + alpha/A local omegaC = math.cos(omega) return (1 + alpha*A) / a0, (-2 * omegaC) / a0, (1 - alpha*A) / a0, (-2 * omegaC) / a0, (1 - alpha/A) / a0 end return filter
I honestly don't understand how biquad filters work (I copy pasted this code from here) but if you do, this can be pretty powerful.
This is a pretty barebones intro. There's a lot more you can do with this, I will amend this with more documentation later.