What are the audio equivalents of images like "Lena", "Mandrill", and "Cameraman"? I don't know what to call these images, but they're very often used in the image processing world as standard examples to show the output of a particular operation. Here's a link to the page describing Lena as a "standard test image". Are there similar canonical audio clips used to demonstrate the effects of certain audio filters or operations?
The closest example I can think of is the beginning of Suzanne Vega's "Tom's Diner" which has been used for the mpeg-1 layer 3 development, and is still occasionally used to demo audio codecs.