- Loss of air sacs improved hominin speech abilitiesBart de Boer
Amsterdam Center for Language and Communication, University of Amsterdam, Spuistraat 210, Amsterdam, The Netherlands
J Hum Evol 62:1-6. 2012..This relation between complex vocal communication and fossil evidence may help to get a firmer estimate of when speech first evolved...
- Acoustic analysis of primate air sacs and their effect on vocalizationBart de Boer
Universiteit van Amsterdam, Spuistraat 210, 1012 Vermont Amsterdam, The Netherlands mail
J Acoust Soc Am 126:3329-43. 2009..The relation between air sacs and the evolution of speech is discussed briefly, and it is proposed that an air sac would reduce the ability to produce distinctive speech, but would enhance the impression of size of the vocalizer...