Test each audio channel in your A/V system (up to 8 channels) with SignalSuite TV.
Use SignalSuite TV's stereo test signal generator on your 4th generation Apple TV to help set up, test and optimize your A/V audio system. SignalSuite TV generates white noise, pink noise and pure tones in addition to square, triangle, and sawtooth waveforms. Signals can be panned between two (left and right) audio channels, and any channel in up to 8-channel surround sound audio systems can be assigned to either the left or right output.
Note: Working with multi-channel A/V systems requires that Apple TV's audio Surround Sound setting be set to "Auto" and that the A/V receiver be properly configured for a multi-channel source.