The areas of compression are lossless compression and lossy compression. Lossless compression reduces the file size without sacrificing any data quality, while lossy compression reduces the file size by discarding some data, which may lead to a decrease in quality.
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In a sound wave, compression areas are where the air particles are closely packed together, resulting in high pressure. Rarefaction areas are where the air particles are spread out, resulting in low pressure. These alternating areas of compression and rarefaction create the vibrations that we perceive as sound.
A sound wave is a longitudinal wave that propagates through a medium by causing particles in the medium to vibrate back and forth in alternating areas of compression and rarefaction. Compression refers to areas where particles are close together, while rarefaction refers to areas where particles are spread out.
That phenomenon is called compression. Sound waves are made up of areas where air particles are compressed together (high pressure) and areas where they are spread out (low pressure), resulting in the perception of sound.
A compression wave diagram illustrates how energy is transmitted through a medium by showing areas of high and low pressure as the wave moves through.
When the particles of a medium displaces due to compression and rarefaction in the direction of the force, it is known as longitudinal waves.