While searching for the Millennium Falcon in the asteroid field, Admiral Piett notifies Darth Vader that the Emperor wishes to speak to him. Darth Vader proceeds to do so.

Here, I have the de-specialized original version followed by the current one. The look isn't the only difference as the dialogue between the two has been changed as well.

Sourced from the D+80 Project and Empire Strikes Back 2011 Blu-ray