Our ears are capable of receiving the waves and transmitting them through the eardrum and ear bones to the cochlea, which converts the vibrations into electrical impulses that the brain can interpret. This is an efficient method of communication, as sound travels very quickly in water. For example, beavers use their tails to hit the surface of water to create a warning or alarm signal. This technique is used by a large number of creatures. A surface, which is struck to produce sounds.
These vibrations are controlled by muscles, which contract and relax to control the membrane. The pitch can be changed based on how fast the vibrations are. The vibration is caused by air pushed up along it by the lungs. A vibrating membrane present in the Larynx of amphibians and mammals, and the Syrinx of birds.When these are rubbed together they produce a ‘chirp,’ which is higher pitched based on the speed at which the two surfaces are rubbed together. A Stridulatory Organ that consists of a ‘scraper’ and a rough surface, present on two different parts of the body.It is often found in insects and is used to producing mating calls. A Vibrating Membrane that is attached to a muscle.In order to carry out these actions, many organisms have adapted body features. When looking at classification based on the method of sound production, we must understand that any movement that causes molecules in the air to vibrate about or causes pressure waves will produce sound. Auditory communication is further classified based on the methods of sound production and the type of sounds produced.