Add the adjustment function of sound in the menu

[xmh0511]

The approach of adjustment of the sound can only work in playing channels, the sound of the beeper during the alignment of the dish is associated with the sound. That is, if we haven't searched any channel, the sound is unable to be adjusted. Shall we add the function for adjusting the voice in the menu so that we can directly adjust the sound instead of that the entry of adjusting the sound is only usable after searching the channel and playing it?

[Tom.w]

Yes, this issue needs to be fixed