SSC MTS EXAM

Detailed explanation-1: -How high or low a sound seems to a listener is its pitch. Pitch, in turn, depends on the frequency of sound waves. High-frequency sound waves produce high-pitched sounds, and low-frequency sound waves produce low-pitched sounds. Infrasound has wave frequencies too low for humans to hear.

Detailed explanation-2: -The amplitude of vibration of a sound wave determines its pitch. The higher the frequency of the sound wave, the lower is its pitch, and hence shriller is the sound produced. Similarly, a sound wave of lower frequency has a low pitch and hence a shriller sound is produced.

Detailed explanation-3: -Low-frequency sound waves reside at and below 300 Hz. We perceive these sound waves to have the lowest pitch.

Detailed explanation-4: -Pitch of the sound depends upon its frequency. As the pitch of the sound is directly proportional to frequency, Low-frequency sounds are said to have low pitch whereas sounds of high frequency are said to have the high pitch.