Old DSP Instructional videos on VHS tapes

Hi,
   In Julius' 5/18/15 reply to my post (Subject: An 
interesting historical DSP article) he mentioned the 
existence of old DSP instructional videos recorded 
on VHS tapes.

As it turns out, I own the following VHS tapes:

  IEEE IEDM-DSP
  "Fundamentals of DSP" (Part 1 of 4)
    by a Ronald Schafer

  IEEE IEDM-DSP
  "Applications of DSP" (Part 2 of 4)
    by a James McClellan

  IEEE IEDM-DSP
  "Trends in DSP System Design" (Part 3 of 4)
    by a Ronald Schafer

  IEEE IEDM-DSP
  "DSP, Analog Interfaces" (Part 4 of 4)
    by a R. Hester

  Mass. Inst. of Tech. (MIT)
  "Z-Transform Properties"
    by a Ronald Schafer

  IEEE
  "High-Resolution and Higher-Order 
  Spectral Analysis" (Part 1 of 2)

  IEEE
  "High-Resolution and Higher-Order 
  Spectral Analysis" (Part 2 of 2)

Because I threw my VHS player away years ago, 
I wonder if those tapes would be worth anything 
to anybody.

[-Rick-]

Haha, I don't think I've owned a VHS player since .... 2000? If you have fond memories of them you should think of converting them to DVD. 

I met Lotfi Zadeh at Berkeley in 2000 when they had some sort of internal symposium. Knowing that he had pioneered the development of the z-transform, and having had some cheap wine (I was a grad student at the time!), I came up to him and said I enjoyed that work of his and asked if the 'z' in z-transform was for "Zadeh". That made him laugh and he said, "no no no, I'd never do such a thing! We called it 'z' because you get a 'z' when you flip 's', like in the s-transform." 

I was pleasantly surprised that Jim McClellan is still active in GATech, I thought he had retired some years ago. I hired one of his PhD students for an internship this summer, so I look forward to getting to know McClellan through him. 

OK, enough name-dropping for this morning ..... ! 

On Tue, 19 May 2015 05:54:37 -0700 (PDT), julius <juliusk@gmail.com>
wrote:

>Haha, I don't think I've owned a VHS player since .... 2000? If you have fond memories of them you should think of converting them to DVD. 
>
>I met Lotfi Zadeh at Berkeley in 2000 when they had some sort of internal symposium. Knowing that he had pioneered the development of the z-transform, and having had some cheap wine (I was a grad student at the time!), I came up to him and said I enjoyed that work of his and asked if the 'z' in z-transform was for "Zadeh". That made him laugh and he said, "no no no, I'd never do such a thing! We called it 'z' because you get a 'z' when you flip 's', like in the s-transform." 
>
>I was pleasantly surprised that Jim McClellan is still active in GATech, I thought he had retired some years ago. I hired one of his PhD students for an internship this summer, so I look forward to getting to know McClellan through him. 
>
>OK, enough name-dropping for this morning ..... ! 

H Julius,
   It's nice to hear from you and to hear 
your stories.

Julius, I have a important question for 
you.  The question is very personal and 
I hope it does not offend you.  I also hope 
your answer doesn't embarrass you or damage 
your career in any way.  Here's the question:

  "When you rented Hollywood movie VHS tapes from 
   the movie rental place, did you rewind the 
   tapes before returning them?

[-Rick-]

Trick question, I didn't watch Hollywood movies on VHS ;-). 

On Monday, May 18, 2015 at 7:04:47 PM UTC-4, Rick Lyons wrote:
> Hi,
>    In Julius' 5/18/15 reply to my post (Subject: An 
> interesting historical DSP article) he mentioned the 
> existence of old DSP instructional videos recorded 
> on VHS tapes.
> 
> As it turns out, I own the following VHS tapes:
> 
>   IEEE IEDM-DSP
>   "Fundamentals of DSP" (Part 1 of 4)
>     by a Ronald Schafer
> 
>   IEEE IEDM-DSP
>   "Applications of DSP" (Part 2 of 4)
>     by a James McClellan
> 
>   IEEE IEDM-DSP
>   "Trends in DSP System Design" (Part 3 of 4)
>     by a Ronald Schafer
> 
>   IEEE IEDM-DSP
>   "DSP, Analog Interfaces" (Part 4 of 4)
>     by a R. Hester
> 
>   Mass. Inst. of Tech. (MIT)
>   "Z-Transform Properties"
>     by a Ronald Schafer
> 
>   IEEE
>   "High-Resolution and Higher-Order 
>   Spectral Analysis" (Part 1 of 2)
> 
>   IEEE
>   "High-Resolution and Higher-Order 
>   Spectral Analysis" (Part 2 of 2)
> 
> Because I threw my VHS player away years ago, 
> I wonder if those tapes would be worth anything 
> to anybody.
> 
> [-Rick-]

Rick,

I have a question for you regarding AGC implementation based upon a diagram in your textbook.  The diagram you show (Figure 13-77) shows the AGC'd signal , yn going through a multiplier.  I was wondering if a complex signal is available whether it is better to implement the AGC with Isquared+Qsquared rather than with yn squared? 

On Tue, 19 May 2015 14:42:33 -0700 (PDT), bulegoge@columbus.rr.com
wrote:

   [Snipped by Lyons]
>
>I have a question for you regarding AGC implementation based upon a diagram in your textbook.  The diagram you show (Figure 13-77) shows the AGC'd signal , yn going through a multiplier.  I was wondering if a complex signal is available whether it is better to implement the AGC with Isquared+Qsquared rather than with yn squared? 

Hello bulegoge,
   I just now saw your post. I don't have a 
quick answer for you off the top of my head.
Let me think about your question for a while and 
I'll get abck to you.

[-Rick-]

On Tue, 19 May 2015 14:42:33 -0700 (PDT), bulegoge@columbus.rr.com
wrote:

>Rick,
>
>I have a question for you regarding AGC implementation based upon a diagram in your textbook.  The diagram you show (Figure 13-77) shows the AGC'd signal , yn going through a multiplier.  I was wondering if a complex signal is available whether it is better to implement the AGC with Isquared+Qsquared rather than with yn squared? 

Hello bulegoge,
 The answer to your question is:

    If x(n)and y(n) are complex-valued sequences, 
    then yes, the input samples applied to the 
    lowpass filter should be the Isquared + Qsquared 
    value of the y(n) sequence.

Thanks for making me think about this 
complex-signal situation!

bulegoge, if you'd like to have the errata for your 
copy of my "Undersatnding DSP" book, please send me 
a private e-mail.  I'll be happy to send you the 
approriate errata.

[-Rick-]

>Hi,
>   In Julius' 5/18/15 reply to my post (Subject: An 
>interesting historical DSP article) he mentioned the 
>existence of old DSP instructional videos recorded 
>on VHS tapes.
>
>As it turns out, I own the following VHS tapes:
>
>  IEEE IEDM-DSP
>  "Fundamentals of DSP" (Part 1 of 4)
>    by a Ronald Schafer
>
>  IEEE IEDM-DSP
>  "Applications of DSP" (Part 2 of 4)
>    by a James McClellan
>
>  IEEE IEDM-DSP
>  "Trends in DSP System Design" (Part 3 of 4)
>    by a Ronald Schafer
>
>  IEEE IEDM-DSP
>  "DSP, Analog Interfaces" (Part 4 of 4)
>    by a R. Hester
>
>  Mass. Inst. of Tech. (MIT)
>  "Z-Transform Properties"
>    by a Ronald Schafer
>
>  IEEE
>  "High-Resolution and Higher-Order 
>  Spectral Analysis" (Part 1 of 2)
>
>  IEEE
>  "High-Resolution and Higher-Order 
>  Spectral Analysis" (Part 2 of 2)
>
>Because I threw my VHS player away years ago, 
>I wonder if those tapes would be worth anything 
>to anybody.
>
>[-Rick-]

Hi Rick,

I still have a VHS tape player that is in very good condition. I think I
purchased it in the early 2000's because I still had instructional VHS
tapes that I wanted to view. 

If you still have them let me know what it will cost me to have them
shipped to zip code 91910.

Thanks,
Miguel Cubillas



---------------------------------------
Posted through http://www.DSPRelated.com

On Wednesday, May 27, 2015 at 2:03:36 PM UTC-4, Rick Lyons wrote:
> On Tue, 19 May 2015 14:42:33 -0700 (PDT), bulegoge@columbus.rr.com
> wrote:
> 
> >Rick,
> >
> >I have a question for you regarding AGC implementation based upon a diagram in your textbook.  The diagram you show (Figure 13-77) shows the AGC'd signal , yn going through a multiplier.  I was wondering if a complex signal is available whether it is better to implement the AGC with Isquared+Qsquared rather than with yn squared? 
> 
> Hello bulegoge,
>  The answer to your question is:
> 
>     If x(n)and y(n) are complex-valued sequences, 
>     then yes, the input samples applied to the 
>     lowpass filter should be the Isquared + Qsquared 
>     value of the y(n) sequence.
> 
> Thanks for making me think about this 
> complex-signal situation!
> 
> bulegoge, if you'd like to have the errata for your 
> copy of my "Undersatnding DSP" book, please send me 
> a private e-mail.  I'll be happy to send you the 
> approriate errata.
> 
> [-Rick-]

Thanks for the reply.  I am finally getting to implement a real DSP based radio after thinking about this stuff for several years.  I have also been playing around with gnuradio, which is a great platform to understand DSP architectures.

Brent

On Thu, 28 May 2015 06:19:40 -0500, "mcubillas" <20183@DSPRelated>
wrote:

   [Snipped by Lyons]
>
>Hi Rick,
>
>I still have a VHS tape player that is in very good condition. I think I
>purchased it in the early 2000's because I still had instructional VHS
>tapes that I wanted to view. 
>
>If you still have them let me know what it will cost me to have them
>shipped to zip code 91910.
>
>Thanks,
>Miguel Cubillas

Hi Miguel,
   Oh shoot.  I'm sorry to say that about a 
week ago I agreed to mail those tapes to 
another guy here on comp.dsp.

Sorry about that Miguel.

[-Rick-]