Electro-acoustic transducers

Slides:

Advertisements

Similar presentations

Advertisements

SOUND PRESSURE, POWER AND LOUDNESS MUSICAL ACOUSTICS Science of Sound Chapter 6.

What Do You Hear? Beginning Sounds /i/, /t/, /n/.

Developed by Karen Hsi, UCOP EH&S Student Intern.

NOISE EXPOSURE SURVEY NOISE EXPOSURE SURVEY. Either the Mine Operator Or MSHA Can conduct a noise exposure survey on You. This presentation describes.

Probe Tube Microphone Measurements (Basics and Definitions) Greg Nassar MCHAS Team University of Manchester.

Please Pick Up A Notebook Check

What is noise-induced hearing loss? It occurs when the tiny sensory hair cells in our inner ears are damaged by sounds that are too loud and that last.

Pure Tone Audiometry Basic Principles of Sound The Audiometer

Masking: Insuring that the non-test cochlea is not helping out. Making sure that the ear you want to test is the one that is responding.

Feng Chia University FCU Graduate Program in Electro-acoustics Tel: ext.3492 Website:

Operating Sound System Operating Sound System By Jesse A. Role Ph. D TM J& E Role Technology http//

SONOROUS ENERGY Charo Cañero, Andrea Jiménez y Teresa Galán.

Audiological Evaultions

Finite Element Model of an Ear Simulator Pierre Gélat and Richard Barham 3 April 2003.

TOPIC 4 BEHAVIORAL ASSESSMENT MEASURES. The Audiometer Types Clinical Screening.

PURE TONE AUDIOMETRY BALASUBRAMANIAN THIAGARAJAN DRTBALU'S OTOLARYNGOLOGY ONLINE.

Modernising Children’s Hearing Aid Services RECD Measurements Wave 4 EJB 17/05/04.

Lecture 12 10/03/2015  The child is conditioned to wait for a frequency specific stimuli in the sound field and respond using a play activity  used.

R3.6.4 Improved Hearing Assessment in Noisy Environments – Parts 1 & 2 Project Leader: Michael Fisher Principal Researcher (Part 1): the late Ben Rudzyn.

AUDIO MARTIN FILIPELLI Y PAULA CABARCOS A Sound card is an internal computer component that processes audio files. A sound card plays voice as well as.

Summer 2007 SPA 4302 Pure Tone Audiometry.

Vocabulary for Sound. The sound of the phone caused Kara to answer it. The noise something makes.

Pitch, Loudness, and Quality of Sound by by Rifki Irawan Rifki Irawan.

Lipin/Dietz Associates, Inc. Occupational Health Instruments.

Dynamic Microphones. Step-By-Step  Let’s take a step by step look into how the microphone process’s sound.

Test of Hearing And Pure tone Audiometry

$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300.

Scientific knowledge expected from audiological engineers and researchers being applied in Phonak‘s research and development Draft Dec 2007 Michael Boretzki.

CSD 2230 HUMAN COMMUNICATION DISORDERS Topic 5 Hearing Disorders and Hearing Loss Assessment.

Reading an Audiogram. Air vs. Bone Conduction A/C  Via TDH-50P headphones Placed on Pinna  Checks the validity of entire ear system  Tests that ipsilateral.

$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300.

SOUND PRESSURE, POWER AND LOUDNESS MUSICAL ACOUSTICS Science of Sound Chapter 6.

Eardrum Sound waves hit a thin skin call the eardrum. The sound waves cause the eardrum to vibrate. Three Tiny Bones As the eardrum vibrates, it causes.

Auditory Tests  For the Rinne test, a vibrating tuning fork (typically 512Hz) is placed initially on the mastoid process behind each ear until sound.

MASKING BASIC PRINCIPLES CLINICAL APPROACHES. Masking = Preventing Crossover Given enough intensity any transducer can stimulate the opposite cochlea.

Copyrights Beijing RSTech Co., Ltd. All Rights Reserved Trust System Acoustic Expert Trust System Application Beijing Rui Sen Technology Co., Ltd. Feb/2010.

# 1 THE ACOUSTICAL SOCIETY OF AMERICA STANDARDS PROGRAM Paul D. Schomer, Chair ASACOS & Susan Blaeser, Standards Manager Updated Nov

Destructive Interference – Active Noise Reduction (ANR) Koss Noise Reduction Headphones.

Threshold of detection Established according to some criterion.

You better be listening… Auditory Senses Sound Waves Amplitude  Height of wave  Determines how loud Wavelength  Determines pitch  Peak to peak High.

AUDITORY FUNCTION.  Audition results from sound conduction by either air or bones of the skull or both. Sound waves are converted (mechanically in.

AUDIOMETRY An Audiometer is a machine, which is used to determine the hearing loss in an individual.

SOUND PRESSURE, POWER AND LOUDNESS

Sound. Sound Intensity Intensity – the rate of energy flow through a given area.

Conductive hearing loss: there is obstruction of external auditory canal or disease of middle ear. Sensorineural hearing loss: disease affecting cochlea.

Implants – other types. City Lit Auditory brainstem implant (ABI)

Workshop on Standards for Safe Listening Standardized measurements of headphones/earphones Lars Birger Nielsen WP1/12 Chairman SG12 WP1:Terminals and multimedia.

Equipment for Measuring Hearing and Calibration

Trina Redford, Industrial Hygienist National Naval Medical Center

Copyright © American Speech-Language-Hearing Association

Therapeutic equipment I

Which part of you… Contains the smallest bones in your body?

A. B. C. < × >.

You better be listening…

Hearing loss conductive hearing loss sensorineural hearing loss

Audiogram The results from the hearing tests are often displayed in the form of an audiogram.

To be able to hear the webinar, please click on the speaker icon at the top of the screen, unmute your speakers and adjust the speaker volume: Participants’

Vocabulary for Sound

Topic 10: Now hear this © Siemens AG All rights reserved.

به نام خدا.

Ishan Bhatt, PhD, CCC-A, FAAA

Noise Exposure and the OSHA Standard

Name that bone....

Inter-aural attenuation

Electroacoustics Prof. Andrzej Dobrucki, PhD Maurycy Kin and Prof. Krzysztof Opieliński The chair of Acoustics and Multimedia, Wrocław University of Science.

Bone conduction audiometry

Chapter 13 – Waves II.

Work Work the transfer of energy using a force that causes the object to move in the direction of the force.

Presentation transcript:

Electro-acoustic transducers Headphones Insert earphones Bone-conduction vibrators Loudspeakers

Calibration Important for all equipment used to present sound and measure thresholds. Making sure that the sound being produced is what it is supposed to be. If not, add/subtract a correction factor.

Calibration Earlier: Psychoacoustic method Measuring known normal-hearing listeners’ thresholds Now: Electroacoustic method Using transducer, artificial ear or mastoid, weight, microphone, and sound level meter (SLM).