 Sauveur is known principally for his detailed studies on acoustics.Indeed, he has been credited with coining the term "acoustique", which he derived from the ancient Greek word ακουστός, meaning "able to be heard".His work involved researching the correlation between frequency and musical pitch, and — putting Fontenelle's statements in modern terms — he conducted studies on subjects such as the vibrating string, tuning pitch, harmonics, ranges of voices and musical instruments, et al.