Left Right Sound Test
Click on the left and right button to play sound through your speakers.
Speaker Test sectionIn the Audio Files subsection you'll find small sample files, including short speaker tests and subwoofer tests by THX. If you'd like to learn more about THX, check our THX trailers section
Tones Files sectionIn the Tones Files section you will find audio files ranging from 20 Hz to 20 KHz. Lower frequency files are ideal to use as a subwoofer test. In the last page of the library, you'll find sounds that go in crescendo or decrescendo. Use these files to measure the range of your audio equipment (and your own ears, also ;-))
Noise Files sectionIf we had to give a quick definition of noise, we'd all think of terms like “annoying”, “harmful”, “maddening”, or simply unwanted sounds. We all know what that is and how it can affect us. Deeming something as noise is highly subjective on the listener's end. What many people probably don't know is that noise, despite being sound waves, can also have different colors. We can relate sound waves to light. In the same way that white light is formed by the superposition of every color and black is the absence of light and color, we can speak about the color of noise depending on the sound frequencies that form it. So, even if we can't actually see it, noise will have one or other color depending on each of the noise's frequency's contribution. You can use the following Noise Files as speaker tests and subwoofer tests:
- White Noise: It's basically random noise which is formed by a constant energy in each frequency. That is to say (as you'll note on the wave graphic), it has a uniform distribution of frequencies. Like white light is a combination of every color, white noise is a combination of every frequency.
- Brown noise: Where white noise had a uniform energy distribution, brown noise has a descending frequency slope of 6 dB/octave.
- Grey Noise: You'll note the graphic is convex. Grey Noise contains every frequency in equal loudness (opposing white noise which contains every frequency with equal energy).
- Pink Noise: Similar to brown noise but with a 3 dB/octave descending slope. Since every octave has double the frequencies as its previous one, this reduction results in a flat spectrum for every frequency band.
- Violet Noise: The energy distribution in this kind of noise as an ascending slope of 6 dB/octave (brown's opposite, if you will).
- Blue Noise: With an ascending slope of 3 dB/octave, we could say it's pink noise's opposite.
The sound sample used in this test was created by XSerra