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## Dft Calculation |

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via calculation , frequency calculation , directivity calculation , gbw calculation

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

Please find my attempt to manually calculate the **dft** of the Hann function.
I have built a model in MATLAB - Simulink in order to verify the results and included them in the attachment. As you can see the is a substantial difference ?
Apparently the amplitude at zero frequency/dc should be 1v, 1w, 0dB or 30dBw.
I cannot understand this as t

Digital Signal Processing :: 01-06-2016 11:29 :: derick007 :: Replies: **2** :: Views: **576**

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 10:20 :: sarge :: Replies: **0** :: Views: **457**

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 17:49 :: user2788 :: Replies: **0** :: Views: **521**

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 16:52 :: karanbanthia :: Replies: **2** :: Views: **1292**

dtft -- given all points, determine a spectrum.
**dft** -- given a set of points, determine the same number of points from the spectrum.
fft -- same. the fft is just any fast **calculation** method. FFT is often used interchangeably with "**dft**" as a term.
There are two immediate implications above. The first is that the **dft**/FFT (...)

Digital Signal Processing :: 10-03-2011 05:40 :: permute :: Replies: **3** :: Views: **691**

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 05:51 :: melexia :: Replies: **2** :: Views: **912**

What device are you talking about? Amplifier, ADC, DAC... in general, you just divide the output by the full-scale (normalize to the full-scale) before taking the **dft** so that it corresponds to

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 02-10-2011 22:06 :: JoannesPaulus :: Replies: **7** :: Views: **2330**

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 :: 06-08-2007 02:05 :: gunturikishore :: Replies: **1** :: Views: **863**

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 08:38 :: scheik :: Replies: **1** :: Views: **677**

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 14:37 :: wangchao :: Replies: **6** :: Views: **2565**

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 08:04 :: scdoro :: Replies: **1** :: Views: **860**

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voltage mode driver | measure real power | assign delay | capture signal | digital smps | analog clock | keeloq | upgrade | cmos current source | matlab analog digital