high-pitched

1. High in pitch, as a voice or musical tone.
2. Steeply sloped, as a roof.
3. Marked by or indicating intense emotion: a high-pitched debate.

adjective

Elevated in pitch: high, piercing, piping, shrieky, shrill, shrilly, treble. Music acute. See high/low, sounds/pleasant sounds/unpleasant sounds/neutral sounds or silence.

Definition: high
Antonyms: deep, low-pitched

The adjective has 2 meanings:

Meaning #1: used of sounds and voices; high in pitch or frequency
  Synonym: high

Meaning #2: set at a sharp or high angle or slant