Q.Find out how NLP is helping differently-abled persons?

NLP — computers understanding and producing human language — powers several assistive technologies:

• Text-to-speech (TTS)/screen readers read out books, websites and screens for the visually impaired.
• Speech-to-text converts lectures/conversations into live captions for the hearing impaired, and lets people with motor disabilities type and control devices by voice.
• Voice assistants (Alexa, Google Assistant, Siri) let users operate phones, lights and appliances hands-free.
• Real-time captioning/subtitling of calls and videos, and sign-language translation research systems. …

The idea. Natural Language Processing (NLP) enables computers to understand spoken/written human language and to produce it. For a person whose sight, hearing, speech or movement is impaired, NLP effectively substitutes the missing channel with another one. This is an explore-type activity, so the following is a model survey of real, widely used examples.

For the visually impaired

• Screen readers with text-to-speech (TalkBack on Android, VoiceOver on iPhone, NVDA/JAWS on PCs) read out everything on screen — books, websites, messages — enabling independent use of computers and phones.
• Audio description and OCR-plus-TTS apps photograph printed text (letters, labels, signboards) and read it aloud.

For the hearing impaired

• Speech-to-text / live captioning (e.g. automatic captions in video calls and lectures, Live Transcribe) converts surrounding speech into instantly readable text.
• Automatic subtitling of videos and phone-call transcription make audio media accessible.
• Research systems translate between sign language and text/speech in both directions.

For people with motor/physical disabilities

• Voice assistants (Google Assistant, Alexa, Siri) allow full hands-free operation — making calls, typing messages by dictation, switching lights/fans/TV — for users who cannot use hands, keyboards or switches.
• Voice-controlled wheelchairs and home automation extend the same principle to mobility and the living environment.

For people with speech impairments …