| sound production by singing humpback whales. | sounds from humpback whale songs were analyzed to evaluate possible mechanisms of sound production. song sounds fell along a continuum with trains of discrete pulses at one end and continuous tonal signals at the other. this graded vocal repertoire is comparable to that seen in false killer whales [murray et al. (1998). j. acoust. soc. am. 104, 1679-1688] and human singers, indicating that all three species generate sounds by varying the tension of pneumatically driven, vibrating membranes. patt ... | 2010 | 20370048 |