Every frequency range has a colour, a quality, a character. For sound engineers, musicians, and other enthusiasts, knowing how to apply this to an equalizer (EQ) can make a transformational change to your sound—whether you're mixing a live concert, a recording, or even playing music through iTunes.

It's a simple app with a powerful promise: if you learn the qualities of each frequency band—for example, cutting 4kHz puts sound in the background—then you can make equalization work for you, and truly transform your sound into something professional and beautiful.

hearEQ uses your favourite songs to create custom ear training exercises that a) teach you all about frequency bands, and b) help you really hone your EQ skills. A standard 10-band equalizer is used, just like you'd find in iTunes and on many professional sound mixers. Your song will be played back with a simple equalization applied—and you guess what it was!

> Was it really clear, maybe a bit hollow? Could be a 1000 Hz cut.

> Was it muddy? Maybe that's a 500 Hz boost.

> Was it really present, almost too in-your-face? Sounds like a 4kHz boost.

Ten questions, ten frequencies, and then you get a score. Want to focus on just a few frequency bands to start? You can do that too. Keep at it, and you'll be an EQ master in no time.

Want to learn more? Check out our site and the hearEQ video at www.hearEQ.com.