You’ll be familiar with the fact that e-learning requires you to be able to add narration to your presentations and videos. This has traditionally required the creator of the content to either record their voice or hire a professional voiceover artist. Many people dislike the sound of their voice, so it can be prohibitively costly to hire a professional voiceover artist.
Text-to-speech was not an option for e-learning content development until recently. The quality of the voices was robotic and unengaging. It is now possible to create neural text-to-speech solutions through machine learning. This is great news. These can now be used to support any person creating e-learning content.
How can neural text-to-speech be used?
These neural text-to-speech solutions can be used in many ways by content creators:
- As a way to storyboard their content, they can add text-to-speech. This allows them both to see and hear the way the learner will view the content. After they are satisfied, they can send the scrips to a professional voiceover artist. Or they can record it.
- To support accessibility, text to speech is an important tool. Learners with visual impairments may have difficulty reading text on a screen. TTS allows learners to access voice files, making your content more accessible.
However, content creators can easily create voice files that sound natural and engaging thanks to the advances made by Google, Amazon, and Microsoft in the field of neural text-to-speech technologies.
Capella Speech is a text-to-speech engine that allows content creators to alter the speed, pitch, and overall sound of neural text to voice files. Advanced skills can also use SSML (Speech Synthesis Markup Language) to manipulate voices and make them more human-like.
When creating text-to-speech voices in e-learning content, our advice is to keep sentences short. Then review them and make adjustments to the sentences by adding punctuation. This will make your content sound great for learners viewing the slides, presentations or videos you have created for online learning.
Example Text to Speech