Using the re-voicing method, a trained transcriber listens to the multimedia to be captioned and re-speaks all dialogue, in their own voice, directly into the speech recognition software. Some transcription houses use this method to create their transcripts. There is an interesting and effective method for using speech recognition software called “re-voicing”. It takes more time (and/or costs more money) to review and edit the mistakes than it would for a trained transcriber to create the transcript from scratch. My rule of thumb? If the error rate of the speech recognition software is greater than 3%, it is more cost effective to outsource the transcription/captioning to professionals than it is to manually correct the automated transcript in-house.
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But, when you are trying to use speech recognition software and any of the following are present, your results are going to need a significant amount of manual correction: more than one voice, an accent, background noise. So, if you have a single voice speaking on the audio/video and the speech recognition software is trained to that voice, software like Dragon NaturallySpeaking can be very cost effective. Speech recognition software can be trained to your particular voice…and when it is trained, the accuracy rates can be very, very good. Let me put that last statement in context. But to date, the error rates on speech recognition software are too high to make this method the most cost effective. I continue to keep an eye on automated solutions, like Dragon NaturallySpeaking. of WebAim and I have both seen that outsourcing captioning to firms like CaptionSync is incredibly cost effective.
To be effective, your organization needs to adopt a captioning strategy. Here are some of my favorite lessons learned: Captioning Strategy You can read the transcript or chirpstory. So, on Monday, June 18th, the amazing Elle Waters ( and I ( hosted an #a11ychat “ Making Audio and Video Accessible to All” and we were joined by our colleagues to share what we know. And while I know a lot about this topic, it is evolving and I can always learn more from the accessibility tribe.
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You just need to know how to be super efficient with your resources and how to prioritize. But today, I know that accessible multimedia is doable and smart business. I’ll admit, I was initially overwhelmed by the challenges. After a decade of working in the field of web accessibility, I still hear people who think that creating accessibile multimedia for the web is too expensive and too hard to do.
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