4. The method of claim 1 , wherein the method comprises determining source identities of detected speech during the conference and storing the determined source identities in memory, and wherein determining that the detected speech constitutes the speech fragment comprises determining that the detected speech is associated with a new source identity different than a current source identity stored in memory.
4. The method of claim 1 , wherein the method comprises determining source identities of detected speech during the conference and storing the determined source identities in memory, and wherein determining that the detected speech constitutes the speech fragment comprises determining that the detected speech is associated with a new source identity different than a current source identity stored in memory. 5. The method of claim 4 , wherein determining the source identities of the detected speech comprises determining relative spatial locations of the sources of the detected speech in a conference environment.