Page 91 - KEC Khaitan C8.1 Flipbook
P. 91
Sound travels in waves caused by vibrating objects. These vibrations move through various
mediums (air, liquids, solids).
CHARACTERISTICS OF SOUND
All sounds can be described by four key characteristics:
1. Pitch
Pitch describes how high or low a sound seems, depending on the
frequency of the sound wave. Higher frequency means a higher
pitch.
2. Duration
Duration describes how long a sound lasts, from a quick clap to the sustained sound of a musical
instrument.
Visualizing Sound: Transient vs. Continuous Waveforms
3. Intensity (Loudness)
Intensity is how loud or soft a sound is, determined by the amplitude of the wave. Loudness is
measured in decibels (dB).
Introduction to Sound 89

