White Noise Frequency Customizer

How This Tool Works

This generator creates custom white, pink, and brown noise using Web Audio API. It generates noise in real-time with different frequency characteristics. White noise has equal energy across frequencies, pink noise emphasizes lower frequencies, and brown noise has even more lower-frequency emphasis. The tool allows you to customize noise type and volume for your needs.

The generator uses the Web Audio API, a powerful browser-based audio processing system that can generate and manipulate sound in real-time. When you select a noise type, the tool creates a continuous audio signal with specific frequency characteristics. White noise contains equal energy across all audible frequencies (20 Hz to 20,000 Hz), creating a flat frequency spectrum that sounds like static or television hiss. This uniform distribution makes white noise excellent for masking a wide range of sounds, as it covers all frequencies equally.

Pink noise uses a different frequency distribution - it has more energy in lower frequencies and less in higher frequencies, following a 1/f pattern (where energy decreases by 3 decibels per octave). This creates a more natural, soothing sound similar to rainfall, wind, or ocean waves. Pink noise is often preferred for sleep because it's less harsh than white noise while still effectively masking disruptive sounds. Brown noise (also called red noise) takes this further, with even more emphasis on lower frequencies (6 dB per octave decrease), creating a deep, rumbling sound like thunder or a waterfall. The generator processes these signals in real-time, allowing you to adjust volume and switch between noise types instantly without pre-loading audio files.

Noise Color Guide

• White Noise: Equal energy across all frequencies. Sounds like static or hissing. Good for masking sounds and focus.
• Pink Noise: More energy in lower frequencies. Sounds more natural, like rain or wind. Good for sleep and relaxation.
• Brown Noise: Even more energy in lower frequencies. Deep, rumbling sound like thunder or ocean waves. Good for deep sleep and focus.

FAQ

• What is the difference between white, pink, and brown noise?
  White noise has equal energy across all frequencies (hissing sound). Pink noise has more energy in lower frequencies (more natural, like rain). Brown noise has even more energy in lower frequencies (deeper, rumbling sound like thunder or ocean waves).
• Which noise color is best for sleep?
  Pink and brown noise are often preferred for sleep as they are more natural-sounding and less harsh than white noise. Brown noise's deep rumble can be particularly effective for masking disruptive sounds and promoting deep sleep.
• Which noise color is best for focus?
  White noise is often used for focus as it masks a wide range of frequencies. However, some people find pink or brown noise less distracting. Experiment to find what works best for you.
• Is it safe to listen to white noise all night?
  Yes, white, pink, and brown noise are generally safe to listen to all night at moderate volumes. Keep volume at a comfortable level (around 50-60% or lower) to avoid potential hearing issues. Use a timer if you prefer not to play all night.