Homo heidelbergensis Ear Anatomy Indicates They Could Have Heard The Same Frequency of Sounds As Modern Humans » Comparison of Homo heidelbergensis Hearing
Like in modern humans (shown in solid blue), the ear canal of H. heidelbergensis (shown in red and magenta lines) had a peak in auditory sensitivity in the frequency range from 2 kilohertz to 4 kilohertz, where much spoken information is transmitted. Chimpanzees (shown in solid green) have a dip in sensitivity in that range.
