choot main lund dalna hi ye sab kahlata hai.
Period remains the same. A motion is isochronous if its period is always constant and independent of the amplitude.
Amplitude is how loud sound is and does not change a sounds pitch. They are independent.
Frequency is to waves as amplitude is to sound.
Well, I take it you mean a wave in the air, like a sound wave (alternating compressions of air). Volume of a sound wave ( a type of compressional wave) is our perception of its amplitude, the...