Funny horn on the E231-1000

[E231densha]

Hey there,

 

When I went to Japan a month ago, I saw an E231-1000 going very fast at a crossing, in it's usual cool and stylish attitude. It sounded a funny horn from a distance. It sounded somewhat like a steam train horn. How does the driver make that horn sound? When I looked through the cab window of another E231-1000 later that day to investigate, all I see is the driver stepping on the pedal to activate the normal horn. How does he activate the funny horn?

 

Cheers,

Alex

[ToniBabelony]

Like in this video?

 

 

I think it has to do something with how much pressure is applied to the foot-pedal. The more pressure, the intenser the horn is.