'Pure tone' diaporamas de présentation

Pitch , tonality, and the missing fundamentals of music cognition

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Screening Techniques for the School Nurse

Screening Techniques for the School Nurse. Introduction to School Nursing. Screening Programs.

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Sound Synthesis

Sound Synthesis. Part II: Oscillators, Additive Synthesis & Modulation. Plan. Simple Oscillator (wavetable) Envelope control Simple Instrument (Helmholtz) Additive Synthesis Modulation Summary. AMP. FREQ. PHASE. WF. Simple Oscillator. Oscillator 3 strategies.

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THE AUDITORY SYSTEM

THE AUDITORY SYSTEM. Formula for a pure tone. Middle Ear Cartoon. How does the basilar membrane move?. Temporal (Telephone) Theory : Different frequencies are represented by the temporal response of the whole basilar membrane. The basilar membrane responds like a telephone or microphone.

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Efficient Encoding of Vocalizations in the Auditory Midbrain

Efficient Encoding of Vocalizations in the Auditory Midbrain. Lars Holmstrom Systems Science PhD Program Portland State University. Overview. Research goals Overview of the auditory system Encoding strategies Experimental design Experimental results and conclusions.

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Johannes Lantz, Otometrics A/S, HEARsound Laboratories - Copenhagen<>Lund

A FRESH approach to pediatric audiometry ; Should we stop using NBN now? Presentation given at AudiologyNOW !, Anaheim 2013. Johannes Lantz, Otometrics A/S, HEARsound Laboratories - Copenhagen<>Lund Hannah Holmes, Institute of Sound and Vibration Research, Southampton. What this is about.

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Chapter 26 Sound

Chapter 26 Sound. The Origin of Sound. All sound waves are produced by the vibration of a material object. E.g., the reed of a saxophone, the string of a guitar or the tines of a tuning fork.

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10) Two waves, A and B, are superposed. For which one of the following circumstances will beats result?

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Introduction to Audiologic Assessment

Introduction to Audiologic Assessment. Perry C. Hanavan Audiologist. What is the purpose of the audiologic evaluation? Measure degree of loss Define type of loss Determine the medical etiology All the above A and B. Purpose of Audiologic Evaluation.

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Introduction to Audiologic Assessment

Introduction to Audiologic Assessment. Perry C. Hanavan Audiologist. What is the purpose of the audiologic evaluation? Measure degree of loss Define type of loss Determine the medical etiology All the above A and B. Purpose of Audiologic Evaluation.

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Chapter 6: The Human Ear and Voice

Chapter 6: The Human Ear and Voice. The study of the human ear and the process by which sound waves are received and transmitted to the nerve endings that convert mechanical vibrations into electrical impulses.

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HISTORY OF HEARING TESTING

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Referral/Notification and Reporting Learning Objectives

ARIZONA T 3 HOW TO TRAIN HEARING SCREENERS RENEWAL CURRICULUM: REFERRAL/NOTIFICATION AND REPORTING. Referral/Notification and Reporting Learning Objectives. Understand the results of hearing screening methods. Know appropriate responses to screening outcomes.

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Lecture 8

Lecture 8. Perceived pitch of a pure tone Absolute pitch Midterm review. Instructor: David Kirkby (dkirkby@uci.edu). Miscellaneous. Results of homework #2: average score was 84%.

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Human hearing

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Human hearing

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Threshold of detection

Threshold of detection. Established according to some criterion. Other terms related to threshold. dB HL: Hearing level dB RETSPL: Reference equivalent threshold sound pressure level dB SL: Sensation level. HL to RETSPL conversion (Table 3.2 in textbook).

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records to be maintained

records to be maintained. By Jayashree Bsc , MEd (HI) Speciall Educator, Speech therapist. The records to be maintained by a teacher of the hearing impaired related to the audiogram and the hearing aid . Case history of the child Audiogram details

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The Waveform

pressure. time (ms). The Waveform. Microphone converts pressure to voltage Plot pressure vs. time Sound always has an oscillating pressure vs. time. period. T = 2.2 ms. T = 7 ms. Compare Waveforms. f = 1/T = 460 Hz. f = 1/T = 140 Hz. period. amplitude. pure tone = sine wave.

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What if cross-hearing is a problem?

What if cross-hearing is a problem?. Necessary to prevent NTE from responding. Procedure: MASKING. Types of masking: Central versus peripheral Central masking: Elevation of threshold of a pure tone presented to one ear when noise is presented to the other ear. Around 5 dB threshold shift.

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