A British voice actor called Rich has very kindly created and donated his voice for use with OptiKey. The TTS voice was created using ModelTalker.org (you can read more about voice banking here).
英国配音演员 Rich 为 OptiKey 制作了免费语音库，并放在 ModelTalker.org 上供下载使用(具体可以参看语音库)。
To download Rich's voice (British English) log in to https://www.modeltalker.org/get-your-voice with the username Rich with password ModelTalker (note both are case sensitive).
登录 https://www.modeltalker.org/get-your-voice 下载 Rich 的语音库（英式英语），用户名 Rich、密码 ModelTalker (注意大小写)。
Thank you Rich!