• (a.) Speaking or sounding very loud; stentorian.
Sten`to·ro·phon'ic adjective [ Greek ... Stentor + ... a sound, voice. See Stentor .] Speaking or sounding very loud; stentorian. [ Obsolete] « Of this stentorophonic horn of Alexander there is a preserved in the Vatican.» Derham. 
stentorophonic 1. Speaking or sounding very loud; stentorian. 2. Having a loud, powerful voice or making a loud sound.