It might be your alternator belt. Check the tension and tighten if necessary.
The pitch is determined by how high the sound is.
A triangle has high pitch.
that would be high pitch
High
It emits a high pitch
pitch
The pitch of the sound.
The high pitch start would do so later and be higher pitch until the passing of the two moving objects where the low pitch would be lower and end sooner. basically,yes.
pitch - how high or low a sound is volume - how loud a sound is
Yes
No. High pitch = high frequency = short wave
Really high