Question #dc913
1 Answer
Jul 20, 2015
A slight difference in frequency between two sound waves can cause the effect of beats.
Explanation:
This effect is used, for example, in tuning a musical instrument. Say a guitar, you set up the basic note (La, using a tuning fork) then you tighten the cord until you hear, plucking it, an effect of "weavy" sound" changing intensity periodically (the same as saying "a" opening and closing your mouth).
I found this clip that can be interesting:
Hope it helps!