From fowler at ece.msstate.edu Mon Oct 8 08:18:49 2007 From: fowler at ece.msstate.edu (James E. Fowler) Date: Mon Oct 8 08:18:58 2007 Subject: [ece8453] Re: ECE 8453 - HW#4 In-Reply-To: <516143.1191810113630.JavaMail.ltb24@msstate.edu> References: <516143.1191810113630.JavaMail.ltb24@msstate.edu> Message-ID: <470A2E39.6070504@ece.msstate.edu> > I had two questions about part 4 of the homework: > > 1.) Where do we get the filters h & g? Are we supposed to be able to > create those from the information given? h[k] & g[k] are fundamental to the definition of the Haar scaling and wavelet functions. They were given in lecture. Part of this assignment is to properly extract h & g from the lecture material. > 2.) Also, you ask us to calculate J1 given the region of support. > What day did we go over that? I am having trouble finding that > information in the notes. The formula for J1 was given in lecture the week before last. Again, part of the assignment is the extract this from the lecture material. -- ======================================================================= | Dr. James E. Fowler | | Professor | | Department of Electrical & Computer Engineering | | GeoResources Institute (GRI) | | Mississippi State University | | | | fowler@ece.msstate.edu | | http://www.ece.msstate.edu/~fowler | | | ---------- Postal Address ---------------------- Contact Info --------- | Box 9571, 406 Hardy Rd. | HPC2: Rm. 208, +1 (662)325-2578 | | Mississippi State, MS 39762 | ECE: Rm. 406, +1 (662)325-3640 | | USA | Fax: +1 (662)325-7692 | ======================================================================= From fowler at ece.msstate.edu Wed Oct 10 06:39:48 2007 From: fowler at ece.msstate.edu (James E. Fowler) Date: Wed Oct 10 06:39:54 2007 Subject: [ece8453] Re: Midterm In-Reply-To: <1191984610.470c3de305835@webmail.msstate.edu> Message-ID: <16138266.104061192016388472.JavaMail.root@zimbra.ece.msstate.edu> > Dr. Fowler, > In part c of problem # 4 of midterm, can i use the spectogram.m function > provided by you for our homework # 2? Yes. -- ======================================================================= | Dr. James E. Fowler | | Professor | | Department of Electrical & Computer Engineering | | GeoResources Institute (GRI) | | Mississippi State University | | fowler@ece.msstate.edu | | http://www.ece.msstate.edu/~fowler | | | ---------- Postal Address ---------------------- Contact Info --------- | Box 9571, 406 Hardy Rd. | HPC2: Rm. 208, +1 (662)325-2578 | | Mississippi State, MS 39762 | ECE: Rm. 406, +1 (662)325-3640 | | USA | Fax: +1 (662)325-7692 | ======================================================================= From anish at GRI.MsState.Edu Mon Oct 15 10:06:50 2007 From: anish at GRI.MsState.Edu (Anish Chand Turlapaty) Date: Mon Oct 15 10:10:13 2007 Subject: [ece8453] problem 4 Message-ID: <4713820A.5060402@hpc.msstate.edu> Dr. Fowler For problem 4, as I am reusing the code from homework # 2, do I have to compose a full report or can I just present the results and analysis. Thanks Anish From fowler at ece.msstate.edu Mon Oct 15 11:37:51 2007 From: fowler at ece.msstate.edu (James E. Fowler) Date: Mon Oct 15 11:37:59 2007 Subject: [ece8453] problem 4 In-Reply-To: <4713820A.5060402@hpc.msstate.edu> Message-ID: <29891659.111531192466271923.JavaMail.root@zimbra.ece.msstate.edu> > For problem 4, as I am reusing the code from homework # 2, do I have to > compose a full report or can I just present the results and analysis. Just present the results and the analysis. -- ======================================================================= | Dr. James E. Fowler | | Professor | | Department of Electrical & Computer Engineering | | GeoResources Institute (GRI) | | Mississippi State University | | fowler@ece.msstate.edu | | http://www.ece.msstate.edu/~fowler | | | ---------- Postal Address ---------------------- Contact Info --------- | Box 9571, 406 Hardy Rd. | HPC2: Rm. 208, +1 (662)325-2578 | | Mississippi State, MS 39762 | ECE: Rm. 406, +1 (662)325-3640 | | USA | Fax: +1 (662)325-7692 | ======================================================================= From fowler at ece.msstate.edu Fri Oct 19 17:14:12 2007 From: fowler at ece.msstate.edu (James E. Fowler) Date: Fri Oct 19 17:14:16 2007 Subject: [ece8453] Midterm Exam Solutions Message-ID: <47192C34.1010507@ece.msstate.edu> Solutions to the Midterm Exam have been posted to the class website. -- ======================================================================= | Dr. James E. Fowler | | Professor | | Department of Electrical & Computer Engineering | | GeoResources Institute (GRI) | | Mississippi State University | | | | fowler@ece.msstate.edu | | http://www.ece.msstate.edu/~fowler | | | ---------- Postal Address ---------------------- Contact Info --------- | Box 9571, 406 Hardy Rd. | HPC2: Rm. 208, +1 (662)325-2578 | | Mississippi State, MS 39762 | ECE: Rm. 406, +1 (662)325-3640 | | USA | Fax: +1 (662)325-7692 | ======================================================================= From fowler at ece.msstate.edu Wed Oct 24 18:32:52 2007 From: fowler at ece.msstate.edu (James E. Fowler) Date: Wed Oct 24 18:32:59 2007 Subject: [ece8453] Re: about the hw#5 In-Reply-To: <4064068.1193265699516.JavaMail.hy58@msstate.edu> References: <4064068.1193265699516.JavaMail.hy58@msstate.edu> Message-ID: <471FD624.8060304@ece.msstate.edu> > Dear Dr fowler: > I have some question about the Hw#5 > 1. in part 5 you said we do not need to multiply the 2^-j1/2, does > that mean we just use the signal3 as the input x of dwt? Yes. > 2. In your web site you said the circular_conv will take a lot of > time to run. I copied dll file to the directory, it doesn't work. can I provide the mex files for your convenience - I make no warranties about whether they will work or not on your system. > I use mcc -l circular_conv.m to generate the dll file myself? Yes and no - you can do that, but it will not make circular_conv run much faster. You need to compile the circular_conv.c file. You might be able to run: "mex circular_conv.c" and have it work. See the documentation on mex files at Mathworks' website for more details. > 3. I got same plots form part 5 and part 7. However from part 8, it > sounds the two plots need have some difference. am I right? Maybe, maybe not. What does theory tell you? How can you measure a difference if it occurs? -- ======================================================================= | Dr. James E. Fowler | | Professor | | Department of Electrical & Computer Engineering | | GeoResources Institute (GRI) | | Mississippi State University | | | | fowler@ece.msstate.edu | | http://www.ece.msstate.edu/~fowler | | | ---------- Postal Address ---------------------- Contact Info --------- | Box 9571, 406 Hardy Rd. | HPC2: Rm. 208, +1 (662)325-2578 | | Mississippi State, MS 39762 | ECE: Rm. 406, +1 (662)325-3640 | | USA | Fax: +1 (662)325-7692 | =======================================================================