rendermouse blog

AS3 volume control voodoo

While working with the AS3 sound controls this week, I've run into a few snags.

1. Despite what the Adobe docs say, SoundTransform.volume is NOT a writeable property. You have to create a completely new SoundTransform object with your desired volume and pan settings, and then ASSIGN that SoundTransform to the desired SoundChannel.soundTransform property to get it to change. Why?

2. If I fade the volume up from zero to 1 in increments of 0.01, it stops at 0.06. If I fade in increments of 0.005, it never goes up at all. If I fade in increments of 0.0101, it fades all the way up. So it looks like you can't reliably adjust the volume by 0.01 or less. Weird.