Avatar

Please consider registering
guest

sp_LogInOut Log In sp_Registration Register

Register | Lost password?
Advanced Search

— Forum Scope —




— Match —





— Forum Options —





Minimum search word length is 3 characters - maximum search word length is 84 characters

sp_Feed Topic RSS sp_TopicIcon
Question about 10.4 - "The Sampled Sinusoid"
Avatar
dan_1
New Member
Members
January 26, 2021 - 2:54 pm
Member Since: January 26, 2021
Forum Posts: 1
sp_UserOfflineSmall Offline

Hi all, 

I have a question about equation 10.11, page 199 (2nd edition of the FX book)...

In short, the question is: is the equation correct? Smile

It keeps puzzling me, as we are subtracting "M", which is a number of samples, from "nT" which is a value in seconds. I may be entirely missing the point, but it seems to me that equation 10.11 would work if M was a value in seconds, not number of samples. 

In order to delay by a number of samples M, the exponent should be [j * omega * T * (n - M)] rather than [j * omega (nT - M)]. 

I thought this was perhaps a typo or something, but I see that the same equation is used multiple times later on so perhaps I'm just confusing myself...

Does anybody have any thoughts to share? 

Thanks a lot! 

Forum Timezone: America/New_York

Most Users Ever Online: 152

Currently Online:
7 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Top Posters:

Chaes: 51

Skyler: 48

Derek: 46

Frodson: 45

Peter: 43

TheSmile: 43

clau_ste: 39

jim: 34

JimmyM: 33

Gwen: 32

Member Stats:

Guest Posters: 1

Members: 684

Moderators: 1

Admins: 5

Forum Stats:

Groups: 13

Forums: 41

Topics: 747

Posts: 2853

Newest Members:

duo.dirtykidz, Paul, Reakenzo, jflo, dan_1, phlub, josh, bmarx, Tom Helvey, Ludovic

Moderators: W Pirkle: 555

Administrators: Tom: 74, JD Young: 80, Will Pirkle: 0, W Pirkle: 555, VariableCook: 3