Increasing the amplitude of a sound wave?

Answer 1

Loudness is the quality of a sound that is the primary psychological correlate of physical strength or amplitude. Loudness is a subjective felt impression and is in some way related to the objective measure of the sound pressure.

Neither our ear drums nor the microphone diaphragms can convert acoustic intensity. Therefore only use the sound pressure for measuring. To measure the loudness feeling is a difficult thing.

The loudness of 1 sone equals the loudness level of 40 phons (at 1 kHz).

Answer 2

More energy.

Loudness is a measure of how much energy is in the wave. Waves with greater amplitude have more energy and when they interact with a receiving instrument, like an ear, the wave converts that additional energy into greater vibrations in the receiver.

When the amplitude of any wave is increased, the amount of stuff vibrating is being caused to increase its amount of vibration. For sound, increased amplitude of the compression wave is an increase in the pressure variation (both higher and lower) in the wave.

Compressing a gas takes energy. When a gas is compressed, it has potential energy, i.e. it has energy equal to the amount of work it took to compress the gas. Similarly, creating the compression and rarefaction that constitutes a sound wave takes energy. That wave moves and the energy moves. (Technically, the motion of the wave is this displacement of the location of the wave disturbance, not the displacement of the material through which the wave is propagating.)

To increase the amplitude of a sound wave, the source must vibrate with greater movements and that creates higher compression pressures and lower rarefactions pressures in the sound wave and the sound wave has more energy and the wave has a greater amplitude. It is then detected as louder.

Answer 3

As we increase the amplitude then intensity of sound increases. The physical term is intensity. Practically we mean it as loudness. More amplitude then loud sound. If amplitude is less then sound is so soft.

Answer 4

I do not have a specific way of doing this, however you would capture the frequency of the sound and recreate it with larger compressions to recreate the longitudinal waves with a greater number of molecules per wave transfering the frequency.

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I.e., you would pick up the sound with a microphone to turn it into an electrical signal you can amplify to a larger-amplitude signal then use a loudspeaker to convert that back to sound. Frequency does not come into this. Nor does the number of air molecules - but you make them move more closely together and further apart, so increasing the wave's amplitude..

Answer 5

In that event, the sound is perceived as getting louder.

Answer 6

If you increase the amplitude of a sound wave the sound becomes louder.

Answer 7

The sound will become louder