![]() ![]() G09B21/009- Teaching or communicating with deaf personsĪ communication device for deaf, hearing impaired, or mute persons comprises a processor control system which makes use of a microphone and a speech recognizer to receive and process audio data (speech or non-speech) to determine whether or not a dangerous situation exits within the environment surrounding the user.G09B21/00- Teaching, or communicating with, the blind, deaf or mute.G09B- EDUCATIONAL OR DEMONSTRATION APPLIANCES APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE MODELS PLANETARIA GLOBES MAPS DIAGRAMS.G09- EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS.238000006011 modification reaction Methods 0.000 description 4.238000005516 engineering process Methods 0.000 description 4.239000011604 retinal Substances 0.000 claims description 8. ![]()
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