Types of Sound & How Each Sound Types Works
Sound is a complex and diverse phenomenon, and it can be categorized into various types based on several characteristics and properties. Here, we’ll explore the primary types of sound:
Audible sound is any sound that falls in the 20 Hz to 20,000 Hz frequency band that humans can hear. In a medium, like air, pressure waves move through it and make it work.
When an item vibrates, it causes the molecules of air around it to compress and expand.
These changes in air pressure move through the air like waves, hitting our ears and making our eardrums tremble.
Next, our inner ear turns these movements into electrical signals. These signals are sent to the brain to be interpreted as sound.
Infrasound is made up of sound waves with frequencies below 20 Hz, which is the lowest frequency that humans can hear. Infrasound is often made by natural events like meteorites hitting Earth, earthquakes, and volcanic fires.
It can also come from things that people make, like industry machinery. Even though we can’t hear infrasound, it can have an effect on our bodies because it can make different structures vibrate and resonate.
Ultrasound uses sound waves with levels above 20,000 Hz, which are higher than what the human ear can pick up. Ultrasound sounds are sent into the body by a transducer, which is used in medical imaging.
These waves hit organs and other parts of the body inside the body and then go back to the transducer to be turned into pictures. In medicine, ultrasound is used for non-invasive screening and diagnosis. In industry, ultrasound is used to find flaws and measure them.
White noise is a random signal that is the same strength at all levels that humans can hear.
It makes a constant sound that sounds like static or “shushing” by mixing sound waves with different frequencies and amplitudes.
White noise is often used to block out other sounds that aren’t needed, to help people relax, or to help them concentrate.
While pink noise is like white noise, it has more energy in the lower levels. As the frequency goes up, the loudness of the higher-frequency parts goes down, making it.
Pink noise is used to test and calibrate audio because it has a more even sound range.
Brownian Noise (Brown Noise):
Compared to pink noise, brownian noise has even more energy in the low levels. It is made by making the lower-frequency parts louder as the frequency goes down.
The sound of brownian noise is often heavy and rumbling, and it is sometimes used to help people relax and sleep.
The structured vibrations of musical instruments, such as strings, air columns, or membranes, produce sound. Based on its physical properties, an instrument produces particular frequencies or harmonics when it is played.
Melodies and harmonies can be produced by combining the musical notes that are produced by these vibrations. The way these frequencies are arranged and interact is a major factor in how we perceive music.
Speech is a type of sound that people make to communicate. It requires exact synchronization of the respiratory system, tongue, lips, and vocal cords.
Vocal cord vibrations and airflow are adjusted to create various speech sounds, or phonemes, which are then articulated into words and sentences.
The physiology of speech generation and the language processing abilities of our brains work together to produce the tremendously complex speech that is human.
Environmental noises are a wide range of sounds that are produced by nature around us. These noises come from a variety of sources, including machines, weather, animals, and more.
The features of these entities are contingent upon the particular source and the propagation channel.
In addition to giving us information about our surroundings and affecting our mood and emotions, ambient sounds are essential to our sensory experience.
Synthesizers and other electronic equipment are used to artificially create electronic sounds. These gadgets generate electrical impulses, which speakers or headphones then translate into sound waves.
Electronic sounds are adaptable and can be used in a variety of media and entertainment, including music, movies, video games, and other forms of entertainment because their frequencies, amplitudes, and waveforms can be precisely adjusted.