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[WSG22] Daily Study Group: Signals, Systems and Signal Processing

POSTED BY: Abrita Chakravarty
122 Replies
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Bogdan Botas
Bogdan Botas
Posted 2 years ago
POSTED BY: Bogdan Botas

Hello Bogdan, Yes, that would be a good start. You can also browse Stephen Wolfram's Elementary Introduction to the Wolfram Language to get a feel for the language.

If you get stuck with any particular function, you will find more information about it at reference.wolfram.com.

Hope this helps, Abrita

POSTED BY: Abrita Chakravarty
POSTED BY: Mariusz Jankowski
Bogdan Botas
Bogdan Botas
Posted 5 months ago
POSTED BY: Bogdan Botas
POSTED BY: Mariusz Jankowski
POSTED BY: Mariusz Jankowski
Bogdan Botas
Bogdan Botas
Posted 4 months ago

Thanks for looking into this Mariusz. I'll continue with the course and come back to the quiz later on.
POSTED BY: Bogdan Botas

Hi Bogdan, I am told that the multiple-choice quiz questions in Signals, Systems, and Signal Processing have been redeployed and should be working. Give them another try. Thanks!
POSTED BY: Mariusz Jankowski
Bogdan Botas
Bogdan Botas
Posted 4 months ago

Thanks Mariusz!
POSTED BY: Bogdan Botas
Bogdan Botas
Bogdan Botas
Posted 4 months ago

this can't be right...

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POSTED BY: Bogdan Botas
POSTED BY: Mariusz Jankowski
POSTED BY: Mariusz Jankowski

I must admit that confuses me, that you would get different responses to the quiz questions at different times. Let me check on your quiz results, and we'll reach out to you directly if there is any issue.
POSTED BY: Jamie Peterson

Thanks for looking it up. I attach the screenshots from the first attempt, in which almost all my answers were marked as incorrect (same file I sent to wolfram-training email), and my last attempt, in which all the answers are marked correct, even though in both attempts the answers are the same.

Attachments:
Quiz 6 first attempt.pdf
Quiz6 second attempt.pdf
POSTED BY: Arturo Pazmino
POSTED BY: Jamie Peterson
POSTED BY: Arturo Pazmino

Hi, I have a question about the certificates, I have not gotten mine, are you still working on these certificates? or is there any other reason for me not getting the certificate?
POSTED BY: Arturo Pazmino
Dave Middleton
Dave Middleton
Posted 4 years ago
POSTED BY: Dave Middleton
Jonathan Bell
Jonathan Bell
Posted 4 years ago

Thank you, Jamie!
POSTED BY: Jonathan Bell

Hi @Jonathan Bell. Quiz 7 and 8 are linked in the course framework. Please check your recording notification emails from the Daily Study Group to find this link. Our Study Group participants have access to the course in its pre-release phase. We expect to officially release it soon.
POSTED BY: Jamie Peterson
Jonathan Bell
Jonathan Bell
Posted 4 years ago
POSTED BY: Jonathan Bell
Jonathan Bell
Jonathan Bell
Posted 4 years ago
POSTED BY: Jonathan Bell
Rui Lyu
Rui Lyu
Posted 4 years ago
POSTED BY: Rui Lyu
POSTED BY: Jamie Peterson
POSTED BY: Jamie Peterson
Rui Lyu
Rui Lyu
Posted 4 years ago

Hi, I see there's no video for L31, but the certification requires the watching...
POSTED BY: Rui Lyu

Hello, to the staff, could you please double check the "correct" answers for Quiz 6. Thanks.
POSTED BY: Arturo Pazmino

Hi @Arturo Pazmino, We will look into this. Thanks
POSTED BY: Abrita Chakravarty
POSTED BY: Jamie Peterson
POSTED BY: Hakan Kjellerstrand

Quiz 8 has been released as part of the course framework made available to our Study Group participants. Please check your recording notification email sent today and upcoming reminder emails for your link to the pre-released course framework.
POSTED BY: Jamie Peterson
POSTED BY: Hakan Kjellerstrand
Gerald Dorfman
Gerald Dorfman
Posted 4 years ago
POSTED BY: Gerald Dorfman
POSTED BY: Hakan Kjellerstrand
Dave Middleton
Dave Middleton
Posted 4 years ago

The links of all recordings of the study sessions can be found on this page.

The link you're looking for can be found here.
POSTED BY: Dave Middleton

Would someone post the link to today's recording of the lesson Z-Transform and Z-Transform Theorems? I wasn't able to attend and don't see the email for the recording. Sincerely, Jay Morreale
POSTED BY: Jay Morreale
POSTED BY: Hakan Kjellerstrand
POSTED BY: Mariusz Jankowski
POSTED BY: Hakan Kjellerstrand
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POSTED BY: Mitchell Sandlin
Rohit Namjoshi
Rohit Namjoshi
Posted 4 years ago

Works fine for me on the Wolfram Cloud

RSolveValue[y[n] - \[Alpha] y[n-1] == 0, y[n], n]
(* \[Alpha]^(-1 + n) C[1] *)

Most likely you have an existing definition for y or \[Alpha]. Try ClearAll["Global`*"] or "Restart Session" from the "Evaluation" menu, or Quit[].
POSTED BY: Rohit Namjoshi

Thanks, Restarting the session did the job.

Mitch Sandlin
POSTED BY: Mitchell Sandlin
POSTED BY: Anthony Collins

Sorry about that! Done.
POSTED BY: Jamie Peterson
Gerald Dorfman
Gerald Dorfman
Posted 4 years ago
Attachments:
MaximizePiecewis...nb
POSTED BY: Gerald Dorfman
POSTED BY: Hakan Kjellerstrand
POSTED BY: Jamie Peterson
Gerald Dorfman
Gerald Dorfman
Posted 4 years ago
Attachments:
LaplaceROCProof_...nb
POSTED BY: Gerald Dorfman
Doug Beveridge
Doug Beveridge
Posted 4 years ago

Can we get Fridays recording please (Week 2 Review and Fourier Series)

POSTED BY: Doug Beveridge
POSTED BY: Arturo Pazmino
POSTED BY: Zbigniew Kabala
POSTED BY: Mariusz Jankowski

Same here.
POSTED BY: Zbigniew Kabala
POSTED BY: Zbigniew Kabala
Gerald Dorfman
Gerald Dorfman
Posted 4 years ago
POSTED BY: Gerald Dorfman
POSTED BY: Zbigniew Kabala
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Posted 4 years ago
POSTED BY: Updating Name
POSTED BY: Zbigniew Kabala
POSTED BY: Marcos Henrique da Silva Bassani
POSTED BY: Mariusz Jankowski

POSTED BY: Mariusz Jankowski
Doug Beveridge
Doug Beveridge
Posted 4 years ago

Sometimes there seems to be little correlation between the video and the lesson notebooks eg Convolution.

Is there a notebook of the video lecture that corresponds to L09CTConvolution.nb ?

POSTED BY: Doug Beveridge
POSTED BY: Mariusz Jankowski
Doug Beveridge
Doug Beveridge
Posted 4 years ago
POSTED BY: Doug Beveridge
POSTED BY: Mariusz Jankowski
POSTED BY: Jacek Gwizdka

POSTED BY: Zbigniew Kabala
POSTED BY: Mariusz Jankowski

Thanks, Mariusz. I really appreciate it. BTW, I wonder why Mathematica gives me different results of integration that it does for you? I'll try to figure it out and will let you know.
POSTED BY: Zbigniew Kabala

If of any help, I checked for eventually different output emerging from different input and, as it is seen below, we get the same result: enter image description here
POSTED BY: Marcos Henrique da Silva Bassani
POSTED BY: Zbigniew Kabala
POSTED BY: Mitchell Sandlin
POSTED BY: Hakan Kjellerstrand
POSTED BY: Mariusz Jankowski
POSTED BY: Jacek Gwizdka
POSTED BY: Mariusz Jankowski
POSTED BY: Jacek Gwizdka

Hi Jacek, yes, the continuous-time part of signals and systems has not changed much or any in the past 30-40 years. In the nineties, discrete-time concepts were added in recognition of the importance of DSP. It has remained in this form since then without I think losing any of its relevance. It still is a necessary gateway to topics in communication, digital signal processing, image processing, control, etc.

POSTED BY: Mariusz Jankowski
POSTED BY: Mariusz Jankowski
POSTED BY: Mitchell Sandlin
POSTED BY: Hakan Kjellerstrand
POSTED BY: Arturo Pazmino
POSTED BY: Arturo Pazmino
Updating Name
Updating Name
Posted 4 years ago

Arturo, They are for just for practice, nothing to turn in. Later in the course, they will post quizzes to be completed online and these will count towards the certificate of course completion. Steve
POSTED BY: Updating Name
POSTED BY: Mariusz Jankowski
POSTED BY: wilfredo henriquez
POSTED BY: wilfredo henriquez
POSTED BY: Mitchell Sandlin

@Mitchell Sandlin we should be able to share the PDF versions. We will try to add them to the download folder soon.
POSTED BY: Abrita Chakravarty
POSTED BY: Jacek Gwizdka

Hi Jacek, An email was just sent out with a link to download the exercises. Please check again.

POSTED BY: Leila Fuladi
POSTED BY: wilfredo henriquez

Hi Wilfredo, I will ask our team to include Poll questions if possible. As for the cell brackets, in the notebook, if you evaluate the following, it will hide the cell brackets for all your notebooks: SetOptions[$FrontEnd, ShowCellBracket -> False]
POSTED BY: Leila Fuladi

Where do you place that? there are no 'SetOption' menus. I look in the "Preference" submenu to see if there is a checkbox for formatting etc. For me,it is too annoying those brackets. I am used to MATHCAD and clean sheets. MATHCAD has been discontinuing by PTC in favor of their Junky Mathcad Prime, I dislike that S/W big time, sorry). They are years away to make it like Mathcad.

So, I am migrating from a Math Program to type equations as they are seen. Something that I cannot do it in MATLAB. MATHEMATICA is like Mathcad with Floating Pallets plus the powerful syntax, just as any software package, we must learn to use the "short notation' and menus.
POSTED BY: wilfredo henriquez

Hello @wilfredo henriquez , As you are migrating to Mathematica, you might find this video helpful to get started with Wolfram Notebooks: Learn to Use a Notebook on the Desktop
POSTED BY: Abrita Chakravarty
POSTED BY: Jacek Gwizdka

Hi Jacek, the exercises start with Lesson 2, we did not create an exercise notebook for the introductory lesson.
POSTED BY: Mariusz Jankowski

Dziękuje!

POSTED BY: Jacek Gwizdka

Jacek, That's correct. There are no exercises for Lesson 1 (Introduction). For today's session, you have L02 exercises.We covered L01 and L02 today.
POSTED BY: Leila Fuladi
POSTED BY: Jacek Gwizdka

Hi Jacek, in general the notebooks may have more examples compared to the presentation. Here is the missing example for L09:

POSTED BY: Leila Fuladi

Thanks! how do I download it to a local .nb file? When I click on download and select "Continue with FIle Download" it downloads something, but it is not an .nb file - for me it looks like ".com.google.Chrome.tU6ZVD"

POSTED BY: Jacek Gwizdka
POSTED BY: wilfredo henriquez

You are replying on a totally different topic. I am talking about a link to a "Embedded Notebook" from a reply in this forum. Download does not work for me.

POSTED BY: Jacek Gwizdka
POSTED BY: Leila Fuladi

Thanks. The download error I reported earlier is due to my Google Chrome browser. Apparently a "bug", I am not able to download any files from Chrome any more.

POSTED BY: Jacek Gwizdka
POSTED BY: Drew Lesso

Hi Drew, If you study the lesson notebooks and go over the exercises in your own time, that should work.

POSTED BY: Leila Fuladi
POSTED BY: wilfredo henriquez
John Bohn
John Bohn, Retired
Posted 4 years ago

Will there be exercises available to download? Thank you, John
POSTED BY: John Bohn

Hi John, That is correct. For each lesson (except for L01) you will have a set of exercises, shared after the session is completed.
POSTED BY: Leila Fuladi
John Bohn
John Bohn, Retired
Posted 4 years ago

Thank you, Leila Enjoyed your class today. I am new this topic and new to Mathematica. This class will be helpful for both.
POSTED BY: John Bohn

Thanks, John! Glad to hear that.
POSTED BY: Leila Fuladi
POSTED BY: wilfredo henriquez

Hi Wilfredo, We will have review sessions on Fridays, if you can attend.
POSTED BY: Leila Fuladi
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Posted 4 years ago
POSTED BY: Updating Name
POSTED BY: Mariusz Jankowski
POSTED BY: Mariusz Jankowski
John Bohn
John Bohn, Retired
Posted 4 years ago

Hello Mariusz Do you have suggestions for reference materials such as books, online, etc? Thank you, John
POSTED BY: John Bohn

Regretfully I need to unsubscribe from the Signal Processing study group. I thought I would have time to participate, but my current schedule will not allow.
POSTED BY: Drew Lesso
POSTED BY: Rui Alves

Hello Rui and welcome! If you have signed up for the study group you will receive emails with the updated material. If you have registered and have not received the material, please send an email to our Wolfram U team at wolfram-u@wolfram.com.

POSTED BY: Leila Fuladi
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