HEATKEYS

The ultimate collection of online background noise generators, drones and soundscapes shaped to your personal hearing thresholds!

Thousands of people from around the world use SimplyNoise to block distractions, enhance privacy, aid sleep, mask Tinnitus, and melt away stress. The benefits of color noise have been utilized in clinics, schools, households, and offices.

Tests your audio equipment, speakers, room acoustics and hearing. Audio signals and test tones playable online. High resolution sound test files available for free download.

ESP - The Audio Pages. Professional results for the DIY enthusiast. Audio articles, projects to build and general information about hi-fi amplifiers, loudspeakers and audio in general.

YouTube is a place to discover, watch, upload and share videos.

Home page for Gold Line: Manufacturer of professional audio test and analysis equipment and of cb radio, marine radio and amateur radio accessory equipment.

Noisli is a fantastic background noise and color generator ideal for working and relaxing. Plus Text Editor for distraction-free writing.

MathWorks is the world’s leading developer of technical computing software for engineers and scientists in industry, government, and education