55 Great Websites To Download Free Sound Effects. Imagine a movie or video without sound effects. Even a magnificent film like Titanic would look nothing more than a joke if there are no ‘Wham’, ‘Bam’ and ‘Smash’ sounds in it. Background music and sound effects are important for making a video (or even an audio production) engaging and in its full essence. There are thousands of online resources to download sound effects, however, not all of them can offer you high-quality material that’s also free. SimplyNoise.com - The best free white noise generator on the Internet. Freesound. Find and Share Free Sound Effects and Loops.