PROPAGATION OF SOUND AND FACTORS AFFECTING IT 2.0 PROPAGATION OF SOUND Propagation of sound is the Transmission of Acoustic Energy through a medium via a sound wave. Sound is a sequence of waves of pressure, which propagates through compressible media such as air or water or solid. During their propagation, waves can be reflected,
ULTRASOUND. FIND OUT MORE. Sound can be low-pitched, like the rumble of a large truck, or high-pitched, like a whistle. The pitch of a sound depends on the frequency of its wave. Piano keys produce notes that increase in pitch from the left side of the keyboard to the right. We can hear sounds of different pitches, but there are some sounds we cannot hear. Our ears cannot detect very low-pitched noises, known as infrasound, or very high-pitched noises, called ULTRASOUND.
Negative Effects. Not all the effects of music on the brain are positive however. Some types of music can cause the brain to lose it's symmetry between it's right and left halves, or hemispheres.o achieve positive effects of music on the brain, music must have certain attributes. It needs to be fairly complex to involve more of the brain in the activity and keep the person interested. New and different music is another factor that keeps the brain active and not bored.