Reducing line spacing between multiline figure title

I have a multiline figure title with larger text on top. I'm trying to reduce the white space between text lines so that the two lines are closer together. I'd also like the second line to have normal weight font, rather than bold.

Any thoughts on how I can accomplish this?

I've included a code snippet below:

t = title({['\fontsize{14}','First Line of Title'];['\fontsize{9}','Second Line of Title']},'FontWeight','Bold','FontName','Helvetica');

Answer 1

[Voss]

This makes the second line a superscript (^{}) so it's closer to the first line, increases its font size (to 11) to account for it being a superscript, and makes it have normal font weight (\rm).

figure
t = title({'\fontsize{14}First Line of Title';'\rm\fontsize{11}^{Second Line of Title}'});

[John Cruce]

Great suggestion, thanks.

Is there a simple way to adjust the title down so that there's less white space between the top of the figure and superscript?

[Voss]

Adjust the position as desired; second component is the y-coordinate:

figure
t = title({'\fontsize{14}First Line of Title';'\rm\fontsize{11}^{Second Line of Title}'}, ...
    'Units','normalized','Position',[0.5 0.99 0]);