I am new to all of this so please be patient Could you please tell me if there is such an animal as a potentiometer or something like it designed to smoothly adjust audio pitch in a low power dc circuit? Thank you.

 

You make no sense what so ever.
What do you mean by "audio pitch in a low power dc circuit?"

Let me see if I can decode what you are asking.

You would like a circuit where the frequency of the output is adjustable by changing a variable resistor.

 

You make no sense what so ever.

LOL I'm not surprised haha. I will try to explain it at this other post.

http://forum.allaboutcircuits.com/showthread.php?p=445504#post445504