Exam Preview for 33952: Oticon Technologies to Manage Complex Liste

Oticon Technologies to Manage Complex Listening Environments

Please note: exam questions are subject to change.

1. Static, band-limited nonspeech sources of competition: Do not actually exist Are the most challenging for patients Can be effectively minimized via filtering Can fool directional systems
2. Automatic, adaptive directionality: Can operate independently in different frequency regions Activates based on principles set up by the manufacturer Traditionally will change mode over several seconds or more All of the above
3. Modulation-based noise reduction: Is another term for adaptive directionality Will usually take several seconds to make changes in the response of the device Works to reduce sound that is modulating 3-8 times per second Cannot exist in a product that also has directionality
4. Realistic sound environments: Can include competing speech Can include unstable, nonspeech sources of sounds (e.g., traffic noise) Can include stable, nonspeech sounds (e.g., ventilator noise) All of the above
5. Traditional approaches to controlling noise: Tend to be subtractive in nature Are most effective a separating competing talkers Improve as the situation becomes more reverberant Require wireless communication between devcies
6. The unique section in the overall design block diagram for OpenSound Navigator is: Directionality Noise Reconfiguration Analysis Reduplication
7. In OpenSound Navigator: Sound sources in the environment are classified along several dimensions The environment is constantly scanned used two, parallel directional patterns Location information of sound sources is fed to the Noise Removal system All of the above
8. The Velox S platform: Provides the speed to allow OpenSound Navigator to operate at speeds significantly faster than traditional noise control systems Is used solely for OpenSound Navigator as other processing is run on the older Inium section Allowed us to eliminate the need for NFMI wireless processing Had to be retired in order to implement Open Sound Optimizer
9. OpenSound Navigator has been proven to: Match or outperform beamforming Outperform traditional directionality Improve speech understanding performance in complex environments by typically at least 5 dB All of the above
10. Speech Guard LX and Spatial Sound LX: Are two names for the same system Require too much processing power to be useful anymore Became redundant when we introduced OpenSound Navigator Provide a more complete set of natural cues to the listener