Hi Sina,
I am sending two images found in the repository for the original code. The file TextToSpeech.png shows three shapes inside the triangle, probably representing the three original authors (David, Leonard and Craig). And I guess the company was called Trillium for the same reason. It is interesting that in your logo there are three holes. Were you aware of the three authors?
On the other hand, if you look at the Gnuspeech's website, you will see that David wrote "gnuspeech", all lower case, with no space.
Marcelo