This is an interesting video. This was recorded on May 31, 2008 at The Merchants House Musuem in New York City. In the video is Ray Sette on the left and Gordon Ward on the right. Mike Gustavson is running the minidv. While discussing the possible origin of a name you can clearly hear a loud metal "clank." What's interesting is that none of the people respond in any way to the noise. There were two other recorders running along with the video. It is common practice to call out noises that are heard during a recording session in order to avoid confusion later when the recording is being reviewed. Nobody mentions this noise and it was only recorded on two of the three recorders that were running. This was filmed in the old servants quarters where there are bells that would ring when the family needed a servants attention.