PPT-Sound, the Auditory System, and Pitch Perception

Roberto Bresin DT2350 Human Perception for Information Technology Copyright c 2015 Roberto Bresin This work is licensed under the Creative Commons Attribution Noncommercial Share Alike 30 . Speech is for rapid communication. Speech is composed of units of sound called . phonemes. examples of phonemes: /ba/ in bat , /pa/ in pat. Speech. Seeing Sound with Spectrograms. A spectrogram is a 3D plot of sound. Count. Track balls and strikes in the order they are pitched. Example. First pitch = strike. Second pitch = ball. Third pitch = strike. Fourth pitch = batter gets one-base hit. Cumulative pitch count. Anatomy and physiology . Sense organ. Ears are a pair of complex sensory organs located in the both sides of the head at approximately eye level. Ears are housed in the . temporal bones. Each ear is divided into 3 parts – . An old riddle ….. If a tree falls in a forest, and no one hears it, does the tree make a sound?. What is “sound”?. Sound Waves. To a scientist, a tree makes a sound whether someone hears it or not.. Some listeners even assign pitch differently depending upon whether the sound was presented to the right or left ear . Pitch characterize how high or low is sound. Pitch is mainly (but not only) determent by the fundamental frequency. Overview. Capabilities of the Auditory System. What does the auditory system do and how well does it do it?. Hearing Sensitivity. The faintest sound that can be detected by the human ear is so weak that it moves the ear drum a distance that is equivalent to . Bethany Wenger, . Au.D. ., CCC-A, FAAA. AAP QI Phase 2 Webinar. March 14, 2017. Overview. Types of Hearing Loss. Methods of Assessing Hearing. OAE vs AABR/ABR Newborn Hearing Screenings. Types of Hearing Loss. Like light, sound travels in waves and like vision, in order to hear, we first need to receive the sensory input of the waves and then convert them into neural impulses sent to, and processed by, the brain. into local. receptor . potentials. Scala. vestibuli. Cochlear duct. (contains endolymph). Scala. tympani. Perilymph. Basilar. membrane. Cochlea. Sound waves. Helicotrema. Stapes vibrating. in oval window. How the brain & . body communicate. Week 2: Sensory Perception. Week 3: Information Processing. Week 4: Cognition & Motor Action. Week 5: Review and Exam 1. Ascending vs. Descending Pathways. We . associate pitch (the high or low quality of a sound) with . frequency. . Pitch . can vary due to factors other than frequency, such as the intensity or context of a stimulus.. Most frequencies are systematically encoded by the auditory system through . CAPD. ). Central Auditory Processing Disorder (CAPD). http://hark.ie/helping-children/auditory-processing-disorder-apd. /. A disorder that causes students to have difficulty understanding what they are hearing in the classroom. . Ear. The ear converts changes in pressure in the air to changes in the electrical activity of neurons. . The . human ear can detect sound frequencies between 20 and 20 000 Hz.. Anatomists distinguish the outer ear, the middle ear, and the inner ear. 20. th. Feb 2019. Review: the . visual pathway. Pathway begins at the physical apparatus of the eye. Works its way through connecting nerves. Lateral geniculate nucleus (LGN) is an important junction .