For example, of the two words lion and lioness, lion is unmarked for gender (it can denote either a male or female) whereas lioness is marked, since it denotes only females. b. Explicitly characterized by or having a particular linguistic feature.
20 Hertz to 20,000 Hertz is the frequency response range that a human can hear. So in answer to your question 20 Hertz would be the lowest pitch a human can hear.
What sounds loudest to humans may not sound loudest to another species. People are most sensitive to the bandwidth that corresponds to the resonant frequencies of our auditory canal. So, on an average, we hear and experience âloudâ best between 2.5-5 kHz.