How to spawn a command block with a command inside and have a certain condition chain ect
Solution 1:
The things you are looking for are the blockstate (+8 if you want it to be conditional, as @Venya pointed out) and the chain command block, which goes by the name chain_command_block instead of a regular commandblock.
The other thing you're looking for is {auto:1}, the tag that makes the command always active.
So the complete command would be:
/setblock -585.601 68.0 -471.7 chain_command_block 8 replace {Command:"/playsound block.piston.extend voice @p",auto:1}
(I removed the unneccessary numbers from the coordinates as well)