bullhorn
A sub-woofer.
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The volume of the harp varies by the player's touch. The harder the pluck the louder the sound. The softer the pluck the softer the sound.
Stereo sound makes it possible for different sounds to come out of different speakers.
Dig a Hole
It makes the sounds louder So it amplifies (increases in size/volume/sound) of the audio
Sounds are louder when they are closer, because the sound is closer to your ears.
it differs by the vibrations
how much the stereocilia of the hair cells are bent
Sounds are louder when they have greater intensity or amplitude, which is the magnitude of the sound wave. The more energy a sound wave has, the louder it will be. Additionally, the distance between the sound source and the listener can also affect how loud a sound appears.
amplifiers
it makes it louder
To make sounds louder, you can increase the volume or amplitude of the sound waves. To make sounds softer, you can decrease the volume or amplitude of the sound waves. This can be done using a volume control or adjusting the distance between the sound source and the listener.
the pitch of someone
Very large. the larger the louder.
Because sounds louder than that (and actually somewhat softer) cause permanent hearing loss.