for a complete beginner's intro to the fascinating world of neuroscience.
vocalization & speech
A little interactive demo to illustrate the role formants play in vowel sounds.
This podcast by science journalist Dr Carinne Piekema explores how hearing loss affects people, in particular how it affects musicians, and what modern prosthetic devices such as hearing aids or cochlear implants can and cannot do for these patients. It contains insightful interviews with inspirational deaf musicians, some of the UKs leading hearing researchers, as well as simulations designed to show to normal listeners what it would be like to have to rely on a hearing aid or a cochlear implant.
You can listen to the podcast here,
One of the most important classes of sounds that have pitch in the natural environment are voiced speech sounds. However, like many other naturally-produced sounds, these sounds are not strictly periodic. In spite of this, they produce a strong sense of pitch. Sounds that are not strictly periodic but that do evoke pitch are in fact the rule, rather than the exception.
Here is a naturally-produced human vowel:
Elliot and Theunissen addressed this question by calculating the "modulation spectra" of speech as shown here: