Debugger
It can be enabled by launching OCEmu --debugger
This tab is only visible if you added the sound_card component.
The tab is separated in the 8 channels of the sound card. For each channel, you can see the waveform. On the left, you can also see the frequency (in Hz) and the volume. The volume is displayed as A% * B%, where A is an "ADSR coefficient", which applies the ADSR paremeters, and B is the channel's volume.