|The unit of measure loudness level of sound. It’s a logarithmic scale where a small change in decibel level represents a large change in sound intensity. For example, a whisper might measure around 20 dB, while a rock concert can exceed 120 dB.
|The measure of intensity of a sound wave determines its volume or loudness. Greater amplitude means a louder sound.
|The reflection of sound waves off a surface, results in a repetition of the sound after a delay. It occurs when sound waves bounce off a surface and return to the listener.
|The number of cycles of a sound wave that occur per second is measured in Hertz (Hz). Higher frequency corresponds to higher pitch, while lower frequency relates to lower pitch.
|SI unit of frequency, 1 hertz (1Hz) = 1 vibration per second.
|Sound producing organ (voice box) in humans.
|The degree of sensation of sound depends on the frequency of sound.
|Characterized of sound depending on the frequency of sound.
|A technique used to determine the depth of the sea and locate underwater objects.
|The characteristics of sound that help us to distinguish between two sounds of the same loudness.
|Absence of all material particles
|The combination of different musical notes played or sung simultaneously to create a pleasing sound. Harmony adds depth and richness to music.