Forums

depicting the concept of aliasing

Started by Unknown November 3, 2012
Sorry for this supposedly simple question. In Richard Lyon's "Understanding Digital Signal Processing" p.27 is there a y axis for Figure 2-2(c)? And if so, what is the unit of that y-axis? Thank you.

On 11/3/2012 5:59 PM, rich.poum@gmail.com wrote:
> Sorry for this supposedly simple question. In Richard Lyon's "Understanding Digital Signal Processing" p.27 is there a y axis for Figure 2-2(c)? And if so, what is the unit of that y-axis? Thank you.
Which edition/printing? Jerry -- Engineering is the art of making what you want from things you can get. �����������������������������������������������������������������������
On Sat, 3 Nov 2012 14:59:51 -0700 (PDT), rich.poum@gmail.com wrote:

>Sorry for this supposedly simple question. In Richard Lyon's "Understanding >Digital Signal Processing" p.27 is there a y axis for Figure 2-2(c)? And if >so, what is the unit of that y-axis? Thank you.
Hello Rich, I see that you're looking at the 1st Edition of my book. Figure 2-2(c) was my attempt to graphically show the relationship between frequencies that are aliases of each other for an Fs = 6 kHz sample rate. So for that particular figure the vertical axis has no physical meaning. I realize that essentially every frequency domain plot (frequency along the horizontal axis) you'll ever see will have a vertical axis that represents spectral amplitude or power. But for that particular Figure 2-2(c), the vertical axis has no meaning. Rich, if you send me an E-mail telling me what is the Printing Number of your copy of my book, I can send you the approriate errata for your copy. You can determine the "Printing Number" of the American version of the 1st Edition of the book by looking at the page just before the "Dedication" page. On that page (before the Dedication) you'll see all sorts of publisher-related information. Down toward the bottom of the page you may see lines printed something like: ISBN 0-201-63467-8 6 7 8 9 10 MA 02 01 00 99 That initial 6 on the second line above means the "Sixth Printing". A later printing shows something like: 0-201-63467-8 910-MA-02 That initial 9 on the second line above means the "Ninth Printing". An even later printing shows something like this: 0-201-63467-8 11 12 13 14 15 16 17 18 MV 05 04 03 That initial 11 on the second line above means the "Eleventh Printing". See Ya', [-Rick-]
A great book! Is there an errata for the 3rd Edition? Just in case; I 
haven't found any errors or typos.



"Rick Lyons" <R.Lyons@_BOGUS_ieee.org> wrote in message 
news:7lef98tpi6refmjuhhsef4oellkdsn9759@4ax.com...
> On Sat, 3 Nov 2012 14:59:51 -0700 (PDT), rich.poum@gmail.com wrote: > >>Sorry for this supposedly simple question. In Richard Lyon's >>"Understanding >>Digital Signal Processing" p.27 is there a y axis for Figure 2-2(c)? And >>if >>so, what is the unit of that y-axis? Thank you. > > Hello Rich, > I see that you're looking at the 1st Edition of > my book. > > Figure 2-2(c) was my attempt to graphically show > the relationship between frequencies that are > aliases of each other for an Fs = 6 kHz sample > rate. So for that particular figure the > vertical axis has no physical meaning. > > I realize that essentially every frequency domain > plot (frequency along the horizontal axis) you'll > ever see will have a vertical axis that represents > spectral amplitude or power. But for that particular > Figure 2-2(c), the vertical axis has no meaning. > > Rich, if you send me an E-mail telling me what is > the Printing Number of your copy of my book, I > can send you the approriate errata for your copy. > > You can determine the "Printing Number" of the American > version of the 1st Edition of the book by looking at > the page just before the "Dedication" page. > > On that page (before the Dedication) you'll see all > sorts of publisher-related information. Down toward > the bottom of the page you may see lines printed > something like: > > ISBN 0-201-63467-8 > 6 7 8 9 10 MA 02 01 00 99 > > That initial 6 on the second line above means > the "Sixth Printing". > > A later printing shows something like: > > 0-201-63467-8 > 910-MA-02 > > That initial 9 on the second line above means > the "Ninth Printing". > > An even later printing shows something like this: > > 0-201-63467-8 > 11 12 13 14 15 16 17 18 MV 05 04 03 > > That initial 11 on the second line above means > the "Eleventh Printing". > > See Ya', > [-Rick-]
Thank you so much Jerry and Rick for your reply. 

Rick, I will get the print number for you. Thank you again.
Rich
On Tue, 6 Nov 2012 16:12:00 -0800, "garyr" <garyr@fidalgo.net> wrote:

>A great book! Is there an errata for the 3rd Edition? Just in case; I >haven't found any errors or typos.
Hi, Yep, I've compiled an errata for every Printing of every Edition. garyr, send me an E-mail and tell me the Printing NUmber of your copy of my book, and I'll be happy to send you the appropriate errata. See Ya', [-Rick-]