PPT-EVALUATION OF A COMPLEMENTARY HEARING AID FOR SPATIAL SOUND

SEGREGATION Luca Giuliani 1 Luca Brayda 1 Sara Sansalone 2 Stefania Repetto 2 and Michele Ricchetti 2 Fondazione Istituto Italiano di Tecnologia Genoa Italy. 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). 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. deafness. .Common childhood problem. .1 in 1000 birth. .. Permanent hearing impairment >40 . dbHL. .(AVG.OF .5,1,2,4,Khz). .60%--moderate HL. .Rest –severe /profound HL. .. BIRTH TO 5 YEARS PERIOD. Influence Maps. Damián Isla, . Director of Tech. Moonshot Games. Spatial Evaluation. Spreading influence is just one form of spatial function.. Spatial decisions can be made on second-to-second timescales. 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. 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. T. his is called the precedence effect (PE). The precedence effect is a perceptual phenomenon where the cues of the preceding direct sound, the “lead,” dominate over later-arriving reflections, the “lag.” . 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. of the sources when the are using headphone. 2.Introduction Human beings extract a lot of information about their environment using their ears. During this process, sound signals are modified by th 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. 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.. Pam Cooke, Au.D.. Port Perry Audiology. 905-985-3166. info@audiologist.ca. Hearing loss. . Is the second most prevalent cause of living with a disability after depression. . [. Mathers et al (2003) and Weinstein (2011)].