1. Van Warren Van Warren April 2002 The Echomatic™

2. What Is The Echomatic™? An Ultrasonic Mobility Device For the Visually Impaired

3. What Does The Echomatic™ Do? Paints a Sound Picture of the Visual World Using TI Digital Signal Processors™

4. U.S. Statistics 10 Million Visually Impaired 10 Million Visually Impaired 1.3 Million Legally Blind 1.3 Million Legally Blind 1.5 Million Use Computers 1.5 Million Use Computers Only 116,000 Use Cane or Dog Only 116,000 Use Cane or Dog

5. The Echomatic™ Worn like a Walkman™. Worn like a Walkman™. Generalization of Echo Location Generalization of Echo Location Exploits Human Neurophysiology Exploits Human Neurophysiology Natural: Found in Dolphins, Bats Natural: Found in Dolphins, Bats

6. Echo Location Appears in Cane Tapping Appears in Cane Tapping Appears in Tongue Clicking Appears in Tongue Clicking Echomatic™ Magnifies Resolution & Texture Echomatic™ Magnifies Resolution & Texture of Acoustic Image Fantastically of Acoustic Image Fantastically User Interactively “Sounds Out” Environment User Interactively “Sounds Out” Environment

7. Sight Impaired Advantages Can Hear Higher Frequencies Can Hear Higher Frequencies Can Hear Fainter Sounds Can Hear Fainter Sounds Better at Phase Differences Better at Phase Differences Phase in the sound domain is equivalent to stereopsis in the visual domain.

8. Fully Sighted Advantages Explore in New Wavelengths Explore in New Wavelengths Zero EMI Communication Zero EMI Communication Marine Communication Marine Communication Phase in the sound domain is equivalent to stereopsis in the visual domain.

9. Echomatic ™ Architecture

10. Echomatic ™ on TI DSP™

11. Project Status Outbound Algorithms Working Outbound Algorithms Working Inbound Algorithms Working Inbound Algorithms Working Decomposition Understood Decomposition Understood Single 6711 DSK Prototype Built Single 6711 DSK Prototype Built Three DSK Prototype Underway Three DSK Prototype Underway

12. Opportunity for TI Exciting Possibilities In Personal Device Market Exciting Possibilities In Personal Device Market Personal Medical Devices Personal Medical Devices Personal Entertainment Personal Entertainment “Snap Together” Prototyping“Snap Together” Prototyping

13. Opportunity for WDV Engineering Support Engineering Support Packaging Support Packaging Support Project Support Project Support

14. Engineering Support Codec Integration Codec Integration Audio Amplifier Selection Audio Amplifier Selection Digital Audio (low noise) Digital Audio (low noise)

15. Distribution Channel via Janus:via Janus: Qualified User Contact Professional User Training Systematic User Followup Technical Support!

16. Distribution Cont’d Worldwide Market 24x U.S. Worldwide Market 24x U.S. Engineered and Sold: Engineered and Sold: – Like “Walkman” Or “A Calculator” to Sighted “A Calculator” to Sighted – Like “Hearing Aid” to Visually Impaired

17. Contact Information L. Van Warren van@wdv.com 501-224-7434 home office 501-231-5426 mobile

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