Context: Much of its technology and ideas were incorporated into the definition of ISO MPEG Audio Layer I and Layer II and the filter bank alone into Layer III (MP3) format as part of the computationally inefficient hybrid filter bank. Under the chairmanship of Professor Musmann (University of Hannover) the editing of the standard was made under the responsibilities of Leon van de Kerkhof (Layer I) and Gerhard Stoll (Layer II).

Question: What was only incorporated into Layer III and not Layers I or II?
Answer: filter bank

Question: Who was the chair that oversaw the editing of the standard?
Answer: Professor Musmann

Question: Who's responsibility was it to edit the standard for Layer I?
Answer: Leon van de Kerkhof

Question: Who's responsibility was it to edit the standard for Layer II?
Answer: Gerhard Stoll