does pitch increase when you tighten the membrane of a drum? i
have no idea what exactly is that. i mean the "membrane" of the
drum.
Yes. Membrane is sort of the 'skin' of the drum, the place where
you hit the drum with your drumsticks. The tighter it is, the
faster it will vibrate, thus higher frequency and thus higher
pitch.
and can someone show me a diagram depicting a wavelength between
the rarefactions and compressions? is the wavelength the length
between a series of rarefactions and compressions?
Wah lau... you really jialat leh... this one should be very
basic...
wavelength is distance between the centre of consecutive
rarefactions or consecutive compressions.
lastly, what does the question mean when it says to indicate the
centres of compressions and rarefactions?
Literally the centre....
Regards,
Eagle (ExamWorld)
