Noise colors in audio sound engineering have gained attention for their ability to create ambient noise with different frequencies and amplitudes.
Noise colors are variations of ambient noises, each distinguished by the frequency and amplitude of sound waves. Several noise colors exist, including white, pink, brown, blue, violet, green, grey, and black. The idea of associating noises with colors originated from white noise, which mirrors the concept of white light having a uniform power spectrum across the visible range.
White Noise: All-Encompassing Frequencies
White noise comprises all audible frequencies, ranging from 20 Hz to 20,000 Hz. Its unique characteristic is that all frequencies have equal volumes, creating a higher-pitched sound. White noise is recognized for its potential in masking unwanted sounds, promoting relaxation, aiding sleep, and addressing conditions like tinnitus and ADHD. Examples of white noise include TV static, fans, running water, and air conditioner hum.
Pink Noise: Softer and Balanced
Similar to white noise, pink noise covers all audible frequencies, but with decreasing power in higher frequencies. This results in a softer, more balanced sound that closely resembles natural sounds. Pink noise is often used for background noise due to its pleasing and relaxing qualities. Examples include rain, wind, waterfalls, ocean waves, and urban noises.
Brown Noise: Bass-Heavy and Soothing
Brown noise emphasizes lower frequencies, producing a deep, bass-heavy sound. It's known for its sound-muffling abilities and is often used to aid concentration while working. Research suggests brown noise may also enhance thinking skills. Examples of brown noise include steady waterfalls, heavy rainfall, and crashing waves.
Selecting the Right Noise Color
The choice of noise color depends on personal preference and the intended application. Studies indicate specific noise colors can be beneficial for certain situations. For individuals with ADHD, white noise has shown the potential in enhancing memory performance, while pink noise is explored for sleep improvement. Brown noise may assist in managing anxiety and enhancing relaxation.
Listening to Noise Colors
Creating noise colors can be achieved through various methods. Simple options include running a fan or utilizing a TV or radio with static. For more customizable and portable solutions, standalone sound machines, sound/sleep apps, and online platforms like YouTube offer white, pink, and brown noise soundtracks. It's essential to be cautious with volume levels, as excessive noise above 70 decibels can lead to hearing damage.
In conclusion, noise colors offer a unique way to create ambient sounds with varying frequencies and amplitudes. Each color—white, pink, and brown—has distinct characteristics and potential benefits, making them valuable tools for relaxation, concentration, and sleep enhancement.
Source: VERY WELL HEALTH
Photo: Getty Images