[Ardour-Dev] 2.4 lock edit issue

Sakari Bergen sakari.bergen at tkk.fi
Sun Apr 6 13:52:36 PDT 2008

I don't see any good reason why transparency should be dropped, I just  
said it would be ok for me...

In any case I agree that having a "square wave" curve preset for the  
crossfade editor would be a good idea. No need for a separate  
"transparent crossfade" option (which would be confusing).

Also, looking at the crossfade editor I noticed the image for the last  
curve looks a bit different from the others. Maybe this could be  
corrected at the same time? I wonder who made those images?

What comes to the confusion with transparency and crossfades, I'm not  
quite sure what could be done with it. The problem with crossfades on  
transparent regions arises when you have a transparent region  
completely above a longer region (transparent or not). [] = under, ()  
= over (transparent)
[   (   )   ]
What happens is, that the underlying audio will fade away during the  
crossfade and come back after it, which is clearly not the desired  
result with transparent regions. This is also the reason I originally  
made the patch that fixes this.

However, if you have a situation like this: [] = under, () = over  
[    (    ]   [ ]   )
you might want to have a crossfade in the first overlap, but still  
keep the top region transparent, which is not possible with the  
current model. You could just reorder the regions, but sometimes  
things might get complex...

One solution could be to automatically disable the crossfades when the  
transparent region is completely over the bottom region, but leave it  
up to the user in situations where the regions overlap only partly. I  
must admit I didn't think of all possible situations here, and I'm not  
presenting this as the best solution, just an idea.


> ----- Original Message -----
> From: "John Emmas" <johne53 at tiscali.co.uk>
> Subject: Re: [Ardour-Dev] 2.4 lock edit issue
>>  Even if it isn't needed for the music sector, it's a distinctive feature
>> that would be uniquely useful for other types of work.
> And anyway - Sampo's just given a great example of why music editors
> might value it too...!
> John

More information about the Ardour-Dev mailing list