- Is there anybody there said the traveler?
- Knock again, louder.
- I should have thought that was loud enough to wake the dead.

6 seconds sound clip from the The Old Dark House (1932) movie soundboard.

You can hear this line at 00:05:32.624 in the DVD version of the movie.

Quote context

[...]

- Singing in the bathtub, sitting all alone tearing out a tonsil just like a baritone. Just like a baritone. Never take a shower...

(rocks and dirt rumbling)

- Oh look, Phil, lights, lights. Pull in there.

- Probably wisest to push on.

- Well, I'm for staying here.

(rocks and dirt rumbling) (2)

- There you are, the whole hilltop has probably fallen off.

- Is there anybody there said the traveler?

- Knock again, louder.

- I should have thought that was loud enough to wake the dead.

- That's an idea.

- What is?

- Wouldn't it be dramatic? Supposing the people inside were dead, all stretched out with the lights quietly burning about them.

- I'm sure it would be very amusing.

- I'm sure I could do with a drink.

- These people have to be selfish, to be soaked inside not out.

- Listen.

- What is it?

- Thought I heard something.

[...]