On the pole not making more than one sound---
preferably no sound-one strike and its over. Sometimes-
you control the other weapon once and you slip in...
two sounds? You are begiining losing- after that you have lost.
I would like to suggest an alternate, literal interpretation. When you are first learning to use a stick or pole, you do not understand how to apply the proper time/force curve (determined by the weapon weight, length, and flexibility). As a result, when you hit a hard surface, your weapon will bounce away slightly, and hit again a fraction of a second later, making two sounds.
Once you have gained some experience, you can impart all your force in a single solid blow. One sound, no bounce.
Do not attempt to share your interest in martial arts with pedantic,
narrow-minded scholars. As soon as they find out, they will quote from
the classics and regale you with all kinds of irrelevant nonsense. This is
infuriating.
--Ch'ang Nai-chou