DVD reader spin down?

Dear All
I am currently running opensuse 11, and I am really happy about it.
I have two high speed CD / DVD readers / writers on my system, and if i want to play a CD or a movie they spin so fast and so loud i have to really put up the volume to cope with it.

Is there a way to make them spin slower, or quieter, that is at the same speed of home DVD / CD systems?
I do not beleive it is necessary for the drive to spin at 16x to play a commercial CD or DVD

I understand the question is not inherently dependent on suse’s operative system, but maybe there is a linux command to achieve that.

I know it might sound silly…

thanks anyway

had a look at man hdparm ? has some good suggestions