The purpose of this test is to give students an easy and quick self assessment tool to validate their prior knowledge as required for the course H02A6 on Speech Recognition. H02A6 is being taught to a diverse audience with great differences in background knowledge, coming both from K.U.Leuven and other universities. Therefore it is difficult to describe the pre-requisite knowledge by specific class requirements. Generally speaking a good applied mathematical mind is required. Speech recognition uses lots of mathematical techniques, but we do not get involved in complex mathematical theory. Students should have had basic courses in statistics and information theory. Knowledge of the Fourier transform concept and time-frequency representation of time-varying signals is also recommendable.
The test below is split into 4 parts: Basic Mathematics, Probability Theory & Statistics, the BITS of Information and finally Time-Frequency Analysis.
Good luck. Be fair to yourself, don't look at the answers till you've given all questions your best shot. Feel free to use all course material you may have !
| Basic Mathematics | Questions |
| Probability Theory & Statistics | Questions |
| The BITS of Information | Questions |
| Time-Frequency Analysis | Questions |
| Basic Mathematics | Answers | This should be trivial. If not DO NOT enroll in this course and save yourselve time: don't even try to solve the rest. |
| Probability Theory & Statistics | Answers | The theory behind this problem set should be common knowledge. That doesn't make all of the answers trivial. You may not have come up with all the correct answers, but you should understand all the reasoning applied to get to the correct ones and be able to do better in the future. |
| The BITS of Information | Answers | You may never have had a course on information theory or coding, but that doesn't make this problem hard. High school mathematics should have been sufficient. |
| Time-Frequency Analysis | Answers | This much will have been part of virtually any basic undergraduate physics course. If not, call your teacher with a request to adapt his/her syllabus. |
I hope you did well on the self assessment.
If you didn't get it all correct because some of the material is rusty, but you feel you should have know after seeing the answers, then feel comfortable. Maybe read up on some older material. If not too rusty it will all come back in due time.
If there are some aspects of test 3 or 4 that you have never heard of, pls. try to find some very basic material and read up on this first. I'm not using advanced material, but I need to assume some knowledge in these fields in order to teach speech recognition.
If you had some problems with the statistics questions but test 3 and 4 went well, then go and look for your basic handbook on probability theory. It's full of such questions.
If you're still reading on, I assume you feel comfortable about your background.
Enjoy the course !