Messages
2015-12-14
The answers and solutions to the exam have been uploaded in the Examination section. I had previously published solutions for task 1 to 4, but all tasks now have a solution for you to examine.
For the Swedish students:
On Monday 4:th or Tuesday 5:th or January we will schedule a session where we will go through the exam, briefly recap parts of the course, or otherwise discuss or talk about the course contents and answer some questions of your choice. It is mainly intended as a preparation for the re-examination at the end of that week, but we also welcome the rest of you to attend.
Send a mail to Mikael Swartling or just check this course page later for date and time if you are interested in such an additional session before the re-examination.
2015-12-13
The exam has been corrected and the results can be seen in the link "Results" to the left.
2015-11-17
I have published the results of the labs in the laborations section. All submissions that I received have passed, but please see the document in case your submission have gotten lost or in case I missed it. Some mails were sorted incorrectly and I have tried to locate all the submissions.
The exams were sent form China today and we will grade them as soon as they arrive here. Answers to the exam will also be published in a few days in the examinations section.
Finally we, both Nedelko and I, would like to thank you all for attending the course. The teaching situation was of course unfortunate and out of our control, but we hope that the videos and other materials have been a decent substitute. We hope that you still have enjoyed the course and we wish you good luck! Thank you.
2015-11-11
So you have had the exam now and I hope that everything went well. We will have your exams sent to us for grading as soon as possible. Remaning now is the laboration and the deadline is on Friday so make sure you finish your report soon.
2015-11-06
One detail regarding the exam that I have forgot to mention and that I have received a question about is about the table of formulas. The examination section here on the course web page links to a table of formulas that you are typically allowed to bring to the exam. We will provide the relevant/necessary pages from the table along with the exam so you don't have to print it or otherwise get your hands on a hardcopy.
2015-11-05
The time and location for the exam has finally been booked. The exam will be on Tuesday 10:th of November, from 16:00 to 20:00, in Building 7 room 304.
I will also postpone the deadline for the labs so that you can focus on the exam for the remaining days. The deadline to submit the report for the laborations will be on Friday 13:th of November.
Good luck preparing for the exam!
2015-11-02
The results for part examination 2 have been published. I have also updated the results for part examination 1 with a full set of masked ID numbers.
My internal grading for Task 1-3 are as follows:
- Task 1 is the number of correct answers, where 3 or more awards 0.2 points. Some have been awarded 0.1 points for fewer correct answers, see below.
- Task 2 is either correct or not correct.
- Task 3 is the grading of task A and B, respectively; 2 means correct answer, and 1 means partly correct, and 0 is an incorrect answer.
Most of the problems with part examination 2 was in task 1 and the circular convolution. The process of circular convolution can be seen in video 10, part B. There are some interpretations of what circular convolution means when the sequences are not of proper length. Different interpretations gives different results.
The methods presented in the video (truncation of long sequences and simply discarding unused values) are the steps necessary to preserve the linearity and time invariance of the circular convolution operator when working with sequences of incorrect length. Other methods result in a circular convolution that is not linear and/or time invariant for these special cases, when the operator typically is both linear and time-invariant.
I have been quite lenient in interpreting your answers for task B and D if the final answer was incorrect, if you have presented some intermediate calculations.
2015-10-30
The answers to part examination 2 is available. The results will be come soon.
I have also received some comments about the date for the final examination. It seems that Wednesday 11:th of November is the most reasonable choice. I will book the exam after the weekend and confirm the date, time and location. Thank you for the feedback.
2015-10-27
I have received questions about the final exam. The exam will be during week 46 (Monday 9:th to Friday 13:th) but we have not decided on a specific date yet. You will thus have about two weeks from now until the final exam. If there are any particular days during that week when you cannot have the exam (colliding with other courses or activities) then please inform me as soon as possible. We will of course try to avoid any collisions with other activities and the whole week is otherwise open for us to schedule the exam.
The exact date will be decided before the end of this week, but you know at least that you have about two weeks to prepare for it. I will of course be available for questions by mail during that time.
Also, don't forget to complete the second part examination (by Friday 30:th) and the lab. The deadline for the lab is still on the day of the exam, so stay tuned for an update when the exam has been booked.
2015-10-26
The results for part examination has been published and can be found under the exmination section where you found the taska and the solutions.
Results are listed by masked student/personal ID number. Check your last two digits of you chineese student ID number or the masked form of the swedish personal ID number. I realised I was missing the ID number for many of the swedish students, but for the sake of reporting the results, it makes no difference as you will see.
The Task 1-3 columns indicate my own grading of the tasks.
- Task 1 is the number of correct true/false answers, where 4 or more awards 0.1 points.
- Task 2 is the grading of the tasks A and B, repectively; 2 means correct answer, 1 mostly correct but some error in setting up the problem (see earlier message, for example error in setting up the partial fraction expansion), and 0 is incorrect answer and problem setup. Task A and B are graded individually: 2+2 means fully correct answer and awards 0.2 points, 1+2 or 2+1 means an error in either A or B but still awards 0.2 points, 1+1 or less would have awarded less points.
- Task 3 is the number of correct matched pole/zero plots and amplitude responses, where 6+6 are all systems matched correctly and awards 0.2 points.
Since there are multiple students with identical masked ID there may be some ambiguities which results are for which students. As you see, in such cases the students with shared masked ID all had the same number of points awarded.
Added: Only the chineese students are listed by your masked chineese student ID (two last digits) while only the swedish studentes are listed by your masked swedish personal ID number. In case you don't find your masked swedish personal ID, you are listed under "xxxx". I will update that list as soon as I get your correct numbers, and if it turns out that you are not on the list then contact me as soon as possible. In any case, you should not miss the points on the part examination if I missed your submission or if it got lost somewhere.
2015-10-25
The document with detailed solutions has been updated with an additional solution.
For the two remaining lectures we will cover video lectures 10, 11 and 12. To the extent that the videos are prepared and uploaded, you are free to watch any of them on the Monday or the Tuesday lectures.
2015-10-22
I have graded most of your submissions and the results are very good. Good job to all of you. I am waiting for some additional information from a few students before I publish the full results. Hopefully I will receive it by Friday.
Solutions are available in the Examinations sections where you found the tasks. The grading for task 1 and 3 are simple; sufficient number of correct answers gives you the points for the task. Task 2 has been graded by looking at the overall approach to a few details about the problems. A common issue is the partial fraction expansion in task a) for example. Numerical errors, for example mistakes in calculating the actual coefficients from the partial fraction expansion that is otherwise correctly setup, has been disregarded.
Part examination 2 was supposed to be published on Friday, but I have already published it. You still have until Friday, October 30, to complete it. The document with detailed solutions will be updated during the weekend with more solutions relevant to the examination. Good luck with the second part.
2015-10-19
I hope the first part examination is going well for you all. We will keep the pace up now as we approach the end of the course and have the second part examination starting on Friday, October 23, and ending on Friday, October 30. Same times as before; 12:00 Swedish time and 18:00 Beijing time. The second part examination includes some topics from the last two lectures on Monday and Tuesday, so don't be concerned that the exam includes topics not yet covered. More solutions to relevant problems will be provided together with the part examination.
2015-10-17
Solutions to two exercises with more detailed comments have been published and you can find the document in the course material section. Hopefully these will aid you in solving the part examination problems.
2015-10-15
The first part examination tasks have been uploaded to the examination section. I have also uploaded a table of formulas that you can use to look up various useful mathematical identities and transforms. Good luck with solving the tasks.
2015-10-12
On Tuesday, October 13, you will watch lecture 6 and lecture 7. At the end of the week, we will also publish the first part examination. The document will be available here on the course web page and you will have one week to solve and submit the assignments.
In order to prepare for the part examinations, we will also publish solutions to a few selected exercises will full and detailed explanations. These solutions may not be available before the part examination, but at the very least during the exam. We can also select specific tasks on your request if you are having problems understanding particular tasks or topics.
2015-10-05
The laboration files have been uploaded to the course material section.
Your task is to follow the instructions and explore the results by modifying parameters, filters and such on your own. Collect everything in one report per student where you answer the given questions and problems, or interpret and comment on the results in general if there are no explicit questions.
The lab consists of four parts. Part two unfortunately requires additional software that you will not have access to. Do as much as possible from part two, except for the tasks related to the realtime processing (the reverb and chorus commands mentioned in the laboration instructions) and the appendix about configuring the realtime environment.
The deadline for submitting the report (submission by email to Mikael Swartling, unless other instructions are given later) is the time of the exam at the end of the course.
2015-09-29
The conference platform is/was not working for me today but I hope that you were able to watch the video lecture today anyway.
Regarding the confusion and the question about the exam and the chinese students: you will follow the course and do the exam at the end of the course, as usual. I was mistaken thinking that you would follow the course but not take the exam. The laborations, part examinations and the final exam is for everyone to take.
Today was the last lecture before the break, and next lecture will be in two weeks, on Monday, Ocrober 12. The part examinations will be scheduled directly after the break, and the laborations will be published during this week but the deadline for the report is at the end of the course. During the break, there will be no mandatory course activities.
Please contact us as soon as possible if you have any problems or questions regarding the lectures, the exercises, the laborations or other general questions.
2015-09-28
Laborations
There are two mandatory laborations for the course. These labs will instead be made as home exercises that you can solve during the course. Instead of attending the lab, you submit a brief written report. The deadline for the report is at the time of the exam at the end of the course. The labs are Matlab based and can be solved anywhere you have access to Matlab. More information about the labs themselves will be posted here later.
Part examinations
There will be two part examinations (duggor) during the course. These are not mandatory, but will add points towards the final exam. A part examination consists of some exercises that will be publieshed here on the course web page, and you will have one week to solve them. A hand written solution (a photo or scan) will be submitted for grading. You are encouraged to cooperate in solving the issues, but individual solutions are required.
Each part examination accounts for up to 0.5 points each, total of 1.0 points for both part examinations, and counts directly towards your score on the final examination. The final examination gives you up to 5.0 points, for a full grading scale of 0 to 6 points on the exam including the part examinations. The grades for the exam is (where score include the two part examinations):
- 0.0 to 2.9 is not passed
- 3.0 to 3.9 is grade 3
- 4.0 to 4.9 is grade 4
- 5.0 to 6.0 is grade 5
Exact dates for the part examinations will be decided later, but the first part examination will be at around lecture 6 or 7.
2015-09-24
Instead of having public exercises where we solve some of the exercises, we will prepare some detailed solutions for you by request. For each lecture there are some suggested tasks, see the Reading instructions and exercise selection document on the course material page. These exercises come with answers, and sometimes a brief solution.
If you don't understand the answer or the provided brief solution, then we will select some exercises and solve for you. We will either record a video or provide a written document walking you through the solution with more detailed explanations.
Please ask about any problems you have preferably by email or directly after the video lectures. Solutions will be prepared during the week and presented for the next lecture (if by video, for you to watch before or after the lecture).
2015-09-20
The first lecture has been uploaded and consists of an introduction to signal processing, lecture one in two parts, and the slides from the videos with complete annotations. You find links to the videos under the course material sections. The videos are about 20 to 25 minutes long, about 300 MB each to download.
Updated
We were told there were difficulties accessing the files. I have made the files available through alternative links instead. The links on the course material page has been updated accordingly. Please report any further technical problems to Mikael Swartling (contact information available via the course facts page) as soon as possible.
2015-09-18
The base course material with introduction, reading instruction, transform overview, as well as lecture notes for lecture 1 and 2 have been uploaded in the course material section.
Video lecutres are in the processes of being recorded at the moment and will be uploaded and be made available to you via the course material section here on the course web page. If everything goes according to plan, you will find links to video files and support material that you can download and watch both in group and by yourself. The first two lectures will hopefully be available for you no later than Sunday 20:th. Hopefully someone can ensure that the files have been downloaded in advance so they are ready to be watched immediately during the lecture.
The intent is for you to watch these files during the scheduled lecture times. I will be available for questions, both during and after the lecture, on the same online conference platform we tried for the first lecture.
The room has been booked on mondays from 18:30 to 21:00 and on tuesdays from 16:00 to 21:00. On Monday 21:st and Tuesday 22:nd we will watch and discuss lecture 1 and 2, respectively. Videos and lecture notes for the coming weeks will be made available during the course.