More than 10 bands EQ in Rockbox

[Krismarzyk]

Hi,

Is it possible that in the near future any new version would contain more than 10 bands of EQ? Alternatively, is there any simple way of increasing the number of bands in the current 3.13 version? Maybe someone could write a patch?

Many thanks for the replies.

Regards

[saratoga]

We won't include that in the main build since its pointless but you can of course edit the code to include as many bands as you like.

[Krismarzyk]

thank you. can you please tell me in the very easy words (I don't know anything about programming etc.), which I could pass to my colleague, how to edit the source and how to multiply bands? Where is the source code available?

[saratoga]

Take a look at the 10 band eq patch on gerrit.

[gevaerts]

You are aware that this is a *parametric* EQ, right? That means that in just about any realistic case five bands is all you'll ever need if you use it properly

[Krismarzyk]

Yes, I'm aware of this. However, I need to have more than 10 bands in order to adjust the sound which I receive from my DAP via my IEMs. In the treble I have to have at least 7 bands (I have a different boost in 6-7 kHz range and in 7-8 kHz range) and I need additional few for bass and midrange.

I'm complete layman in programming etc. so can someone please write step by step what I have to do in order to multiply the bands.

Should I firstly download the program and then put it into a program editor? Then what?

[saratoga]

If you really have no idea how programming works it may not be feasible for you to do this.

[Krismarzyk]

You are right and I'm not gonna do this by myself. I want to know where to start and I will pass all the info to my colleague at my work who will do this for me.

[luisdent]

For what it's worth, I know that "normally" this many bands isn't necessary.  However, I was recently in a similar situation on my ipod touch.  I have a few IEMs, and using something like "accudio" allows you to make them more "flat" in frequency response by applying an EQ setting that cancels out any bumps or dips that the IEM has in its stock sound signature.  I found that I can very easily make any IEM fairly flat by doing the same sort of thing myself with EQ using online graphs of the IEMs.   Some IEMs, even when close to flat, still need a bunch of bands because they might only have slight bumps in the treble, but there could be 6 bumps.

The only easy way to cancel the 6 bums in the  treble is to use 6 opposing EQ dips.  You can imagine, if you want to get very critical and precise, you would want to flatten out every single bump/dip.  This could easily get into more than 10 bands...  Just a though.