Signal Processing Model of Human Auditory System
To evaluate environmental noise, we need to use methods based on functioning of our auditory system. In this chapter, basics of human auditory system are described. First, the ear sensitivity of the human ear from a sound source to the auditory system consisting of the external canal, eardrum, bone chain with oval window, auditory nerve, cochlear nucleus, thalamus, brain stem, and cortex, and signal processing model for evaluation of environmental noise are described. Second, brain responses in relation to basic perception such as loudness and annoyance are described.