how are wavelenght and frequency of sound related tho the loudness of the sound?
Loudness: (Amplitude or Intensity) is measured by the strength of the sound, while the distance between the sound compressions and rarefactions is known as wavelength.
Low frequency sounds have a long wavelength and are perceived as low-pitched sounds and vica-versa.
Now, if the sound waves have a small amplitude,then the sound will be faint/less loud.On the other hand if the sound waves have a large amplitude,then the sound will be loud.
but there is no as such necessary dependence between loudness & frequency or wavelength.