User Interface Options Transmission Options Examples of ALDs and ALSs Finding and Using ALDs and ALSs Latest Stuff Recommendations ALD Introduction 2 Hearing Aids and CIs Best in Quiet and Close ID: 390168
Download Presentation The PPT/PDF document "1 Why do we need Assistive Listening?" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
1
Why do we need Assistive Listening?User Interface Options Transmission OptionsExamples of ALDs and ALSsFinding and Using ALDs and ALSsLatest StuffRecommendations
ALD IntroductionSlide2
2
Hearing Aids and CIs Best in Quiet and CloseNot so good at a distanceNot so good in noiseNot so good when sounds bounce aroundALDs can solve those “Big Three” problems Bring the sound you want to hear right to your earsEliminate or at least reduce the noiseEliminate the reverberation (bounced sound)
Minimize the loss of signal from conversion
Make a HUGE difference in how much you understand
Why We Need ALDsSlide3
3
DistanceDouble the distance; QUADRUPLE the loss Varies with frequency (highs don’t “travel” well)NoiseWhat you want to hear is easy to lose in the dinThe “signal to noise” ratio mattersReverberationEven without noise, sound you want to hear gets “spread out” as it bounces around the room
Hear the “straight line” first, but then delayed versions of the same thing at lower volume.
The Big ThreeSlide4
4
Reverberation
Reverberation and echos reduce speech intelligibilitySlide5
5
The TV from Across the RoomOn the PhoneIn the carYour Friends at DinnerAt the MuseumAt the MoviesAt a PlayIn a Noisy Restaurant Other Audio Sources
Radios
Music Players
iPods
Hearing Your BestSlide6
6
Hearing aids and CIs have microphones for Inputmicrophones hear everythingBackground noiseReverberationPoor quality signal after distance.Some hearing aids and CIs have other input options
Hearing Aids and CIsSlide7
7
The following input paths can be used instead of or in addition to the hearing aid or CI’s microphones.MagneticAnalog TelecoilDigital Near Field Magnet Input (NFMI)Direct Audio Input (DAI)FM ReceiversBoot
Embedded
By having access to these alternatives
, you can choose how to hear best in every situation.
Get
your audiologist to set up your programs and explain how to use them
Other Input Paths Slide8
8
Headphones (no Hearing Aids or Cis or telecoils)Headphones (with telecoils in Hearing Aids or Cis)Earbuds (usually only works without hearing aids)Neckloops Standard Analog (to telecoils
)
Near Field Magnetic Interface (NFMI) … digital induction
Silhouettes (to
telecoils
)
FM
Boots (to DAI)
Embedded
Patch cord (to DAI
)
Interface OptionsSlide9
9
Pocketalker (or similar)Wired Connect ViaNeckloopSilhouettes
DAI
Headphones
~$140
Personal AmplifiersSlide10
10
Personal FM Solutions
Transmit sound from transmitter to receiver by FM radio.
Directional Microphones
You choice of Interface Slide11
11
Personal IR SolutionsTransmit sound from transmitter to receiver by Infrared light.Directional MicrophonesSome let you choose interface Mostly for TV (not very portable)Slide12
12
Personal LoopsRoom loopsTVComputerChairpad loopsTableloopsSlide13
13
BluetoothBluetooth uses a digital signal to communicate between a pendant and paired audio sourcesIt can be “two-way” so it can work with phones both in and outTransmission/receiving done in pairs; not a “broadcast” Digitally encoded, so it’s privateYour Bluetooth device can “remember” several different pairings and reconnect automatically Only connects with one paired device at a timeSlide14
14
So far, there are no Bluetooth Hearing Aid or CIsBluetooth loopsets can connect you to phones (and TVs, iPods, Tablets, Computers and remote mics)Standard BluetoothNFMIOticon
Phonak
Bluetooth
Bluetooth to Device
Standard Analog Magnetic to Hearing Aids/
Cis
Advantages
Cheap
Not Proprietary
Disadvantages
Bilateral but Mono
Possible EMI (interference)
Bluetooth to Device
NFMI Magnetic to Hearing Aids/CIs
Advantages
Some are True Stereo
No Interference
Disadvantages
More Expensive
ProprietarySlide15
Bluetooth NFMISlide16
Bluetooth AnalogSlide17
Bluetooth
GoodRelatively cheapSome are Integrated with remote controlsSome are true stereoNo Electromagnetic Interferences (unlike regular telecoils)Possible issuesShort range (maybe 30 ft)NFMI is Proprietary; must match your hearing aids Uses a lot of power (so far) it must be a pendantProcessing delay can be more than 25
ms
Ok for
phone calls or listening to music or radioMay be distracting if watching TV or other videoSlide18
18
Systems
Assistive Listening Systems
FM
IR
Loops
Installation
Permanent
Portable
Movies, Auditoriums, Theaters, Stadiums, Churches, Classrooms,Slide19
Jacks and Plugs
Mono (1 ring, 2 sections)
Stereo (2
ring,
3
sections)
Cell Phone (3 rings, 4 sections)
Stereo to Mono Adaptor
Male to Male Adaptor
RCA to male 3.5 mm
Optical Slide20
Simple
Mic to TVPlace a good mic near the TVPatch it via wire or your favorite wireless to your ALD of choiceFMIRBluetoothUse your favorite interfaceHeadphonesEarbuds
Neckloop
Silhouette(s)
Works, but better to patch directly to the TVSlide21
Patching to a TV
Then with appropriate adaptor
to your favorite interface
Bluetooth TV adaptor
FM
InfraRed
Stereo System
Room Loop
Headset
May need a stereo/mono adaptor
May need different style jack
Some newer TVs don’t have “line outs”, but use an Optical audio output. You would need a d/a converter to patch to most ALDs.Slide22
22
Finding SystemsSignsIRLoopsALDsWebsiteswww.aldlocator.comwww.loopamerica.orghttp://www.americanhearingloop.com/hearing-loop-locations.htmlwww.captionfish.com
http://
www.hearinglossweb.com/tech/ald/loop/loop.htmSlide23
23
Resourceswww.ncatp.orgInformationTrial equipmentwww.ncdhhs.gov/dsdhh/Regional CentersEquipment Distribution
www.nchearingloss.org
Glossary defines terms
HLAA ConventionsDon’t miss the exhibit areaSlide24
24
RecommendationsLook for where you could benefit from Assistive Technology.Consider which technologies meet your needs.Try out the technology in various situations.Never buy a hearing aid that doesn’t have standard telecoilsGet your telecoils activated and tuned to your needs.
Learn how to change to the best program for each situation.
Consider other options such as a personal amplifier, Bluetooth, FM or IR
Standard telecoils are NOT obsolete
Some aids have both NFMI and standard
telecoils
.Slide25
25
Latest Stuff
Roger FM (by
Phonak
but supports most brands)
Pen mic
Clipon
mic
Boot or embedded receivers
Cochlear Dynamic FM
For BAHA
For Nucleus CI (soon)
MFi
(Made for iPhone) hearing aidsSome direct to aids from several manufacturers
Some to a “gateway” deviceSlide26
26
Questions?Now I’ll stay as long as you likeLater Email me at steve.barber@earthlink.net