This is a colorful noise generator. There is an onscreen visual representation of color spectrum along with an interactive quiz that let you create and change colorful noise from gentle Pink to harsh Violet.
The controls on screen (sliders and buttons) is clickable to make changes, but if you listen while you work, you can speed up adjustments using keys on your computer keyboard. The sound starts and stops with the play button. While it’s playing, the spectrum graph display a real-time image of relative frequencies.
How to Use the Colorful Noise Generator
You can set how long you want the noise session to last with a timer and the sound will fade away smoothy when done. You can select a program mode that changes through different layers and colors of noise over time as if it were a preset sequence. Hit a color button for an alternative tone.
On the screen, the options move from deep and rumbly (brown) to airy and bright (violet) as you go from left to right. White and pink noise is in-between. The graph display below show you how much energy is in each frequency through its slope. In the quiz rounds, the color name doesn’t show, just listen and try to pick out what sound it is.
Controls for tilt and filters are located in the shape section. The high pass and low pass sliders removes very low or very high frequencies. Dragging the handle dots on the spectrum graph lets you see cutoff points and adjust them visually. The tilt slider tilts frequency balance with a gentle slope that makes the sound darker or brighter, but doesn’t alter cutoffs. Filters also has presets so you can switch to commonly used filter shapes quickly.
The underlying noise are textured by adding layers to it. Hum, rumble, wind, ocean, and rain is all options for layers that can be set to any volume level using the slider and turned off/on using the mute button. Mixing layers together produces even richer noises.
Use the scene buttons to save a combination of layers, volume, filters, and color. You can then instantly return to your favorites.
Hands on with your computer keyboard. Press the spacebar to start/stop. Use left and right arrow keys to cycle forward/backward through the color of noise. Use up/down arrows to turn up/down the master volume. Use the bracket keys to raise/lower the tilt. To pick a specific color of noise from 1-5 just use the number keys: 1,2,3,4,5. Cycle through different timer settings with the t key. Cycle through each program with the p key. To exit the listening quiz press the q key and to move to the next quiz question, press n.
To exercise your ears, try it in quiz mode which covers up the spectrum and prompts you to guess what color the noise is. That way you can get a better sense of what frequencies are represented by the slope even if you aren’t looking at it. You could of always gone back and listen again to the previous sample to confirm your selection.
Let it run and experiment with filter layers. You get time after the timer to let the sound gradually fade. Look at the spectrum graph, which displays the desired slope (dashed line) for each color that you choose. You can then see how far off the graph your filter settings are different than the theoretical line.
For extra space, use the fullscreen button on the graph and if you forget what each control does, click the help button.
Pick a color, press play. Adjust the filters until they sound right, then add a layer for some texture. Tweak the tilt using the keyboard shortcuts as you listen. The quiz is where you can see how well you heard the difference. Go explore the sounds at your own pace.