Rockbox

Dynamic menus use a callback function to provide the text of each menu
item. That’s how the “Simple EQ Settings” menu is able to display a
configurable frequency in a menu item name, and it’s also used in the
“Advanced EQ Settings” menu to avoid repetitive lang entries for Peak
Filter 1, 2 and 3. Those menu items are not spoken however.

What I did is simply to add a voice callback to dynamic menus, along side
the text_callback. The voice_callback goes ahead and speaks the item,
rather than returning lang IDs. It’s called from the talk_menu_item()
function that speaks constant items.

And I implemented such callbacks for the two eq menus, of course.

The menu system macros are a bit painful to follow, but my modifications
are straightforward.