Unknown Symbol

[Harrypph]

I'm looking at a circuit diagram for an Omnichord, it seems pretty easy to follow but I have 2 component symbols that I can't figure out what they are. any help is appreciated
(Its the dotted line and ladder symbols)

 

[Pommie]

That looks like a badly drawn Diac.

Mike.
Edit, it has 1μ above it which suggests a capacitor.

 

[MaxHeadRoom78]

That shows suggested alternative circuit options.
Max.

 

[Ylli]

The part with the 'ladder' is simply an electrolytic capacitor - i.e. a polarized capacitor. The cross hatching may be indicative of an aluminum electrolytic or tantalum cap, but it really doesn't matter. It's a cap.

The dotted area shows multiple instances of the same circuitry. Your schematic shows 2 tone related touch switches, while the actual product may have many more. It's just a way of not having to draw the same thing over and over again.

 

[Harrypph]

Ah ok, so it is like the Electrolytic (Japan) in the picture below, but just with fewer lines in the middle.

-Also, another quick question when it refers to "touch sensors" does it mean a physical sensor like this-

Or is it just a metallic strip between the two points that just acts as one