PPT-Sound and Hearing Chapter 16

Learning Goals for Chapter 16 Describe sound waves in terms particle displacements or pressure fluctuations C alculate speed amp intensity of sound waves Understand Resonance frequencies . Nature of the Sound Stimulus. “Sound”. . is the rhythmic compression and decompression of the air around us caused by a vibrating object.. Applet. Applet2. Sound Wave:. Amplitude and Frequency (Hz). Audition.  . the sense or act of hearing. .. We hear a best of sounds with frequencies in a range corresponding to that of the human voice. . Frequency .  . the number of complete wavelengths that pass a point in a given time (i.e. per second. 1.1 The Nature of Sound . I. Essential Question: . What is sound and how does it move? . II. Key Vocabulary. Density:. the amount of matter in a given space or volume. . Found by dividing the mass by the volume. . Hearing loss. So: Place and Frequency theories both correct. At certain frequencies, each theory is correct. Place theory explains processing of sounds of 200-20,000 Hz. Frequency theory explains processing of sounds of 20-4,000 Hz. Hearing. Language. Sensory Receptors. A . receptor. Is a cell, often a specialized neuron, . Suited by its structure and function to respond to a particular form of energy, such as sound.. Function. : . Hearing. Language. Sensory Receptors. A . receptor. is a cell, often a specialized neuron, . suited by its structure and function to respond to a particular form of energy, such as sound.. Function: Convert that energy into a neural response.. Where Does Sound Come From?. A vibration creates a wave. Travels through liquids, solids, and gases. Frequency = Pitch. Bass to treble . Amplitude = . Loudness/ Volume. Outer Ear. Pinna/Outer Ear. Funnels sound waves into the ear canal. Outer Ear- . main purpose is to funnel sound waves to inner ear.. 1a. . Auricle. -gathers sound waves . 1b. . External acoustic meatus- . transmits sound waves to tympanic membrane. 1c. . Tympanic membrane . The Ear. The organ of hearing and equilibrium. What is Sound? . Pressure disturbance originating from a vibrating object. Compressions and rarefactions of particles in a medium. What sound looks like. 9.1 The . pattern of pressure fluctuations of a sound . Figure 9.1 The pattern of pressure fluctuations of a sound . (Part 1). Figure 9.1 The pattern of pressure fluctuations of a sound (Part . 2). Loss. Chapter 144 - . OtoscleroSis. Soroush Zaghi – October 30, 2013 . COCLIA- Auditory Function Tests. #1 ) Describe . in detail the decibel scales used to measure sounds and hearing (dB HL, dB SPL and dB SL). Speech and hearing are the most important means by which we communicate with our fellow man. Through hearing we receive speech sounds from others and also listen to ourselves! In some ways it is more of. & Implants. Latest Technology. Phonak. Roger Pen. GN . ReSound. LiNX2. Oticon. . Opn. (. IoT. ). MED-EL Rondo. Jacoti. Hearing Suite. Audioeverywhere. Rechargeable Batteries. PSAPs. Phonak. Roger Pen. FICMS, FRCS. Head of Department of Surgery. Head of Al-Yarmouk Center for Postgraduate Study. Consultant Otolaryngologist. Agenda. I will discuss the following points:. Epidemiology. Hearing Facts. Terms. Definitions..