Production of sound waves by bacterial cells and the response of bacterial cells to sound Author: Matsuhashi/// Conference/Journal: J. Gen. Appl. Microbiol Date published: 1998 Other: Volume ID: 44 , Pages: 49 , Special Notes: See also 42, 315 (1996); 43, 225 (1997) and [J. Bacteriol. Feb. 688 (1995)] , Word Count: 38 They report having used these artificial sonic generators in their studies on bacterial cells. In addition, his group has used continuous single sine waves produced by a speaker at frequencies of from 6-38 Hz to promote colony formation