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## Dft Calculation |

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11 Threads found on edaboard.com: **Dft Calculation**

I think your **calculation** for DC is correct. How did you get the Matlab results?
The **dft** is not a low pass filter. Why should the amplitude at DC be 1V?

Digital Signal Processing :: 01-13-2016 09:33 :: std_match :: Replies: **2** :: Views: **326**

Hi to all,
I'm trying to built simple power amplifier with cmos output. I need to calculate output power in tran analysis, usually I do it with **dft** function and rms value for signal.
For example for sinus we know:
P=\frac{V^2 }{2R }
Also, from wiki crest factor for rectangular

RF, Microwave, Antennas and Optics :: 02-13-2014 05:20 :: sarge :: Replies: **0** :: Views: **351**

I am trying to understand how the Goertzel algorithm works, which is bothering my mind at the moment.
I have an discrete sampled output, but can't se how come **dft** **calculation** comes, and how come we end up spectral coefficient...
Basically, I am lost..

Digital Signal Processing :: 12-16-2013 12:49 :: user2788 :: Replies: **0** :: Views: **437**

Hello all,
I am not able to get the correct amplitude of input signal from **dft**. My sampling frequency is 128Hz and I am take 128 Samples and computing 128-point FFT. I also have a simulated sine wave generator which I am using as input. When I vary the input frequency, FFT detects the frequency correctly till 64Hz (i.e. Fs/2) but it g

Digital Signal Processing :: 09-18-2012 12:52 :: karanbanthia :: Replies: **2** :: Views: **1028**

I search after information like sites or Tabels that compare with diffrent methods or documents that have explanation about the different in all fourier transform methods like **dft**, FFT, DTFT, Fourier queue and more

Digital Signal Processing :: 09-28-2011 09:08 :: GoRub :: Replies: **3** :: Views: **537**

Hi all,
I am trying to do post place and route simulation using Modelsim XE with ISE 11.
My code is a Discrete fourier transform implementation which contains three 1024 bytes dual port memories, and other logic for **calculation** of **dft**.
When I run a post route simulation it takes 1 hour to simulate few hundreds of nano seconds, why is it happen

PLD, SPLD, GAL, CPLD, FPGA Design :: 05-25-2011 01:51 :: melexia :: Replies: **2** :: Views: **812**

Hi,
Can anyone give me some idea how I can calculate SFDR from the **dft** plot obtained by using cadence ADE calculator. I want to know after getting the **dft** plot, what function in the calculator do i need to choose to obtain SFDR?
Thanx.

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 02-10-2011 15:25 :: abhisek.dey007 :: Replies: **7** :: Views: **1966**

Though the FFT **calculation** is discrete, tools can automatically plot by connecting the top with a smooth curve of the magnitude plot against frequency. So it depends sometimes on the tools setting. To say SIMPLY FFT or **dft** is a sampled version of continusous spectrum. So I dont think the author faked or something like that. I hope I answered your q

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 06-07-2007 22:05 :: gunturikishore :: Replies: **1** :: Views: **764**

The only transform which we may calculate using our PC or any other machine is**dft**
All the other transforms are theoretical
Because the Limits are from -Inf to +Inf
Where as the limits in **dft** are real Numbers so we calculate only **dft**, Practically.
FFT is nothing but a Optimized technique for **calculation** of (...)

Digital Signal Processing :: 03-30-2007 04:38 :: scheik :: Replies: **1** :: Views: **628**

Categorize your size into Random Logic Area + MEM Area.
You can get the area report from synthesis tool, usually it's based on um^2. (Based on the library you are targeting).
The chip area will be (RLA/cell utilization + MEM Area) * (1+**dft** overhead)

ASIC Design Methodologies and Tools (Digital) :: 05-07-2006 10:37 :: wangchao :: Replies: **6** :: Views: **2215**

Hi all,
Can anyone help me comment on the below code and explain how the function works.I am not sure how this function works and why is there a mid value in the **calculation**?
Thanks a lot!
regards

Digital Signal Processing :: 01-25-2006 03:04 :: scdoro :: Replies: **1** :: Views: **732**

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