New Developments in Hearing Technology Dave Gordey, M. Sc. AUD (c)
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Transcript of New Developments in Hearing Technology Dave Gordey, M. Sc. AUD (c)
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New Developments in Hearing Technology
Dave Gordey, M. Sc. AUD (c)
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Let’s Talk About…..
New Features of Hearing Aids Directionality Noise Reduction Adaptation Manager Datalogging New Designs And Next Generation in Hearing
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What is Directionality?
Two microphones Optimal Port spacing Optimal mic alignment
A good way to improve speech in noise!
Dir
ect
ionalit
y ind
ex (
DI)
- d
B
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First Generation -Manual Directionality
Underlying assumptions
Target is in front Noise is elsewhere Manual switching required
Microphone Directionality
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Now - Automatic Directionality
Switches automatically between omni-directional and fixed directional microphones.
Uses Artificial Intelligence to make decisions.
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Noise Reduction
Noise interferes with speech understanding
Likely linked to auditory fatigue
Most environments have some noise present
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Noise Reduction
1.Modulation Based NoiseManagement
2. Tristate Noise Management
Two Types
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Speech
Noise
Speech + Noise
“Looks like noise”
Minimal Modulations
Highly Modulated
First Generation of Noise Reduction - Modulation Detection
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Tristate Noise Reduction
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Automatic Adaptation Manager
Automatic transition to the target prescription
Customizable transition time (start and end-time)
Smooth adaptation for a smoother acclimatization
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SKI-Slope Losses
Focus on more than just audibilityLess gain in HFMore gain in MFMore focus on transition region
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Data logging
Hearing aid has a built in “artificial memory”Tells us about:
Hearing aid use
Operation of on/off switch
Battery consumption
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Introducing Delta. . .
The look of the future
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Delta
Design Nothing like a traditional
hearing aid Fits Mild to Moderate-Severe
Understanding in noise Excellent bandwidth Advanced directionality
Sound quality and comfort Open fitting/Micromold Speaker in the ear State-of-the-art automatics
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How can people with hearing loss become hearing
empowered?
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Answer
Connecting them to the Near World and the Far World
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The Near World
Hearing our friends, family and colleagues in different environments.
Hearing and understanding the sounds of our world
Living in the soundscape.
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Connecting to the Far World
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The Far World
The world is going wireless
Multimedia is now a big part of our life
Professional and Personal Lives
We all need access to the far world
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Ramsdell and WWII Veterans
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•Social
•Signal/Warning
•Primitive
Disconnected from their Soundscape
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The importance of auditory spatial resolution
(or why it’s good to know where sounds come from..)
Demo with lights out
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Speech understanding in noise:
De-construct the auditory scene, find the voice of interest
Not just identifying components, but “following a voice”
Speech events have little or no meaning in isolation – Meaning accumulates over time…
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What is the most important mechanism to maintain a
persons Soundscape?
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Hint #1
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Hint #2
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Two ears are better than one
Binaural hearing gives us a sense of place Binaural hearing allows us to localize
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Localization ability: Maintains SoundScape Improves Speech/Noise
Binauaral hearing is most important for good localization ability
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How do Hearing Aids Currently
Affect Localization ability
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Video
Excitement and Innovation….
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Binaural Processing
Spatial Sound: Ensures that auditory system is sent
and accurate representation of the spatial environment
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Binaural DFC
Unique - First DFC system ever to benefit from binaural processing
Benefit- More precise feedback detection- Avoid “false positives” and common artifacts of conventional DFC systems.
Conventional
Epoq
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Extreme Bandwidth
Unique- Bandwidth extends up to ~10,000 Hz
Benefit- Improved sound quality- Better localization- Greater naturalness and fidelity.
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Extended Bandwidth & Audibility
. . . can they hear it?
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Life Learning
Unique
1. Detailed learning of Volume Control preferences – in many different types of environments
Benefit - Convenience, ease of use- Discreetness (reduce need to use VC)- Volume is automatically adjusted to match each situation- Higher acceptance and long term satisfaction
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Phone and Streamer Demo
video
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Streamer
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Streamer Benefits
Mobile phone: Hassle free, wire free. Listen with both ears
Connect to your IPOD - Stream music - directly into the hearing aids
Easy to Use.
Etc.
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Summary
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Questions?