Ground truth materials

[MikeSmithEU]

2 freely available possible datasets have already been identified, more are welcome:

1. Mozilla Common Voice https://voice.mozilla.org/en
   CC-0 license
2. Openslr resources http://openslr.org/resources.php
   Each resource has own license ranging from "unrestricted" to "CC-BY-NC-ND 3.0"
   Remark: Some of the Openslr data is likely to have been used for training various STT systems, as such it may not always be the most fair indicator

Open questions:

• Which ground truth materials might we use for evaluating vendors' solutions? Will we build our own dataset? Or both?
• How will we include these resources into our product?

[MikeSmithEU]

Suggestion: the user of our benchmark should have the choice of which data to use (with a sensible default, following the 'Extensibility', 'Specific over generic' and 'Pragmatism' principles).