I've asked about this in electronics forum some months ago. No one could offer an easy solution.
What you need is LM3914 dot/bar driver that you could wire as 10 LED bar graph in green/red or green/yellow/red but it'd limited to 1 wide. For multiple bars, you'd need to build filters to isolate and pass only specific frequency to one of the multiple LM3914's but this isn't easy as it involves lot of computing to get proper capacitors, inductors, and/or resistors to get the correct frequency range. A DSL filter would be a cheap solution to pass everything from 4KHz and below (voice part for telephone part), and if you find another filter for DSL modem intended to pass 4KHz and up that too. Now day most DSL modem has high pass filter built in.