What makes sound louder?

What makes sound louder?

• A. A higher wave amplitude
• B. A higher frequency
• C. A longer duration
• D. A higher pitch

Answer: (A)

Loudness comes from how strong the pressure changes are in the sound wave. The amplitude is the size of those pressure variations; when the amplitude is larger, the air is pushed and pulled more vigorously, delivering more energy to your ears. That extra energy increases the sound pressure level, which your hearing perceives as a louder sound. Frequency tells you about pitch, not how loud something is. Longer duration means the sound lasts longer, but doesn't inherently make it louder unless the energy per moment is also higher. Higher pitch can sometimes seem louder in certain contexts due to how our ears respond, but the fundamental factor that makes a sound louder is the amplitude of its pressure wave.

Loudness comes from how strong the pressure changes are in the sound wave. The amplitude is the size of those pressure variations; when the amplitude is larger, the air is pushed and pulled more vigorously, delivering more energy to your ears. That extra energy increases the sound pressure level, which your hearing perceives as a louder sound.

Frequency tells you about pitch, not how loud something is. Longer duration means the sound lasts longer, but doesn't inherently make it louder unless the energy per moment is also higher. Higher pitch can sometimes seem louder in certain contexts due to how our ears respond, but the fundamental factor that makes a sound louder is the amplitude of its pressure wave.