Yes, sound can be heard louder if wind is carrying it. When sound waves propagate through a medium, such as air, they create variations in air pressure. The wind can affect the propagation of sound in a couple of ways:
Sound Amplification: When wind blows in the same direction as the sound wave, it can act as a medium for sound propagation and can help carry the sound waves over longer distances. This can lead to an increase in the perceived loudness of the sound. The moving air particles can act as a conveyor for the sound, pushing the waves forward and reducing the dissipation of sound energy.
Directivity and Focusing: Wind can also influence the directionality of sound waves. If the wind blows towards the listener from the source of the sound, it can act as a "wind tunnel" and funnel the sound waves towards the listener, increasing the perceived loudness. This effect is similar to how a megaphone or a horn can focus sound waves by directing them in a specific direction.
However, it's important to note that the wind's impact on sound can be complex and dependent on various factors, such as wind speed, wind direction, and the distance between the sound source and the listener. In some cases, strong winds blowing against the sound waves can hinder sound transmission and reduce its audibility. Additionally, the characteristics of the sound source, such as its intensity and frequency, also play a role in determining how wind affects its perceived loudness.
In summary, wind can have both positive and negative effects on the audibility and perceived loudness of sound. When wind aids in the propagation or focusing of sound waves, it can contribute to a louder perception of the sound.