My neighbour is a noisy ignorant barstool who plays his music extremely
loud with loads of bass every night, it irritates the hell out of me
and is driving me mad. Does anyone know a way of generating a signal
that can disrupt his speakers similar to the way mobile phone does when
a message or call is received? This would have to be a strong enough
signal to penetrate a wall and preferably be directional.

Alternatively I will pay for a brick to be put through his window.