Room 3 

11:40 - 12:40 


Talk (60 min)

Wearable Live Captions (making mask wearing more accessible for those who are hard of hearing)

During the pandemic we've all been feeling pretty isolated, and we've all been doing our best and wearing masks. But what if everyone wearing masks cuts off your ability to converse?


My dear mum relies on lip reading and clear sounds to understand what people are saying. But I, of course want her to stay safe. So the thought occurred. Can I make a live captioning display fit into a mask so that she can read what I'm saying as I'm speaking?

This talk will cover how to build a wearable LED display, how to use Microsoft Azure Cognitive Services to convert speech to text, using Ably's MQTT broker to send messages to a microprocessor and some good old JavaScript and C++.

Live captioning of speech to text has so many useful applications and Cognitive Services makes it fast and easy to build captioning into your applications. Together with Ably Realtime, it is possible to make wearable devices which can display what you’re saying, in real time. Wearable Live Captions!

Jo Franchetti

Jo is a Developer Advocate at Spotify. She is passionate about the web a better place, developing fun PWAs, building sparkly wearable internet connected tech, and of course writing beautiful CSS. She is a mentor and organiser at and at Front End Foxes where she is able to act on her passion not only for teaching good use of the web but also for improving the diversity and inclusivity of the tech industry.