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Kaashyap Pappu


MathWorks

102 2019 年以降の合計貢献数

I am an Application Support Engineer at MathWorks in the Engineering Development Group.

My areas of interest are Signal Processing, Wireless and Satellite Communications, Radar Signal Processing and Image Processing.

DISCLAIMER: Any advice or opinions here are my own, and in no way reflect that of MathWorks.

Kaashyap Pappu's バッジ

  • Knowledgeable Level 2
  • First Answer
  • Introduction to MATLAB Master
  • Solver

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Loss stops calculating with custom layer (weighted cross entropy function)
Whenever the loss value is either “NaN” or “Inf”, the value is not plotted on the curve. On similar lines, the accuracy is near ...

29日 前 | 0

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Classifying ECG into separate segments
As I understand it, each type of wave has a specific frequency characteristic. Based on this, bandpass filters can be designed t...

30日 前 | 0

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Time-frequency spectral coherence analysis (desperate need of help)
As has already been suggested by Daniel, the mscohere function can be used. If you are using a custom window, generate the vecto...

30日 前 | 0

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How do I plot a constant value over multiple different intervals ?
To plot an overlapping line onto the figure, an x-axis vector would need to be specified and provided to the “plot” function alo...

30日 前 | 0

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Help with echo effect to audio signal code?
The Audio Toolbox has an Echo object that could cater to your needs. Create the object using the following code: echoObject = a...

約1ヶ月 前 | 0

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designAuditoryFilterBank - Error "Undefined function or variable"
The designAuditoryFilterBank function is available from the MATLAB R2019B release version. If you are using an older version, th...

約1ヶ月 前 | 0

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Frequency spectrum of a sound signal
Using a test sound file of my own, I was able to generate the plots attached. The function “audioread” works if the suffix of th...

約1ヶ月 前 | 0

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BER depends on TotalFrame count in QPSK Transmitter and Receiver example
The variability is due to timing synchronization and carrier frequency offset (CFO). Timing synchronization becomes much difficu...

約1ヶ月 前 | 1

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Collection of all the signals by Phased.collector
Yes, the “collector” can be used for all the signals from angles by specifying the second input argument as shown as shown here....

約1ヶ月 前 | 0

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Remove unwanted narrowband interference
Increasing the order of the Butterworth filter could help improve the response. Alternatively, the buttord function can be used ...

約1ヶ月 前 | 0

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Plotting a matrix / Plotear una matriz
I am assuming you are trying to have multiple axes on a single figure window, where a few of the subplots will be used to plot m...

約1ヶ月 前 | 1

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append cell array #2 to cell array #1 to get a final cell array of cells
The operations carried out by either: C = [A B]; C = horzcat(A,B); C = cat(2,A,B); Should work for your requirement. There i...

約1ヶ月 前 | 0

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Normalize/scale in range
The code below can help perform matrix normalization where you have to specify the appropriate -1, 0 and 1 values in variables "...

約1ヶ月 前 | 0

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How to set the FIR filter specifications?
You can use the Filter Designer app to get started on the Filter design. You can select the FIR filter option, specify order or ...

約1ヶ月 前 | 0

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Matlab and USB2.0 Protocol data aquisition
To read data from a USB, you can use the serial port object to initialize communication between device and MATLAB, followed by u...

3ヶ月 前 | 0

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Help needed for Plotting Confusion Matrix as given in the sample image
I have brought this issue to the notice of our developers. They will investigate the matter further. For the time being, you co...

3ヶ月 前 | 0

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単相誘導機の特性曲線フィッティング
You can use the Curve Fitting app documentation to get started. Hope it helps!

3ヶ月 前 | 0

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how can i filter my signal if the fft looks like this?
For plotting the FFT output, the x-axis must be defined in a vector. Ideally this vector is defined as follows: x = (0: 1/nFFT ...

3ヶ月 前 | 0

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QPSK modulator and demodulator
To perform QPSK modulation and demodulation, you can use the “pskmod” and “pskdemod” functions by setting the order of modulatio...

3ヶ月 前 | 0

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How to hold previous selection in masked block
The solution to this problem has been addressed in this thread. Hope this helps!

4ヶ月 前 | 0

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Plot BER & SNR of LTE
To obtain the BER values for a LTE channel, refer to the example elaborated upon here. Click on “Try it in MATLAB” to get the M-...

4ヶ月 前 | 0

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Examples of matlab2016
You can find the documentation of previous MATLAB releases in the Archived MathWorks Documentation here. Hope this helps!

4ヶ月 前 | 0

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Syntax error in Simulink Fcn
Make sure the variables “c1”, “c2”, “u”, “c3”, “cw”, “A” and “rho” are defined in the MATLAB workspace or in one of the callback...

4ヶ月 前 | 0

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Analysing the results of a fullfactorial experiment
A possible workflow for this could be to normalize each of the factor values using the “normalize” function elaborated here. Se...

4ヶ月 前 | 0

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Fine Tuning Kalman Filter Using Simulink Design Optimization
A similar query regarding the Q and R matrices’ optimization was addressed and elaborated upon here. It is important to model th...

4ヶ月 前 | 0

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I am trying to use the frequency offset calibration for receivers code available in MATLAB to process a set of IQ data I received from a spectrum analyzer. I tried running the code but I am experiencing difficulty with the pilot tone expected.
Given that MATLAB carries out Baseband Processing, based on the Bluetooth Standard, the Bandwidth could be 1MHz in the case of B...

4ヶ月 前 | 0

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Using bisection to determine unknown parameter
The results of function_Q2(a) and function_Q2(b) are negative, therefore no root exists within the interval [a,b]. The “if” cond...

4ヶ月 前 | 0

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Filtering of frame by frame IQ data from SDR
To filter the frame-based samples, you can use the “filter” function with a “filter” object as shown here. By appropriately assi...

4ヶ月 前 | 0

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how to impliment pseudo random binary singal in simulink ?
A general way to generate a random binary signal would be to use the “Random Number” block that has been elaborated here, follow...

4ヶ月 前 | 0

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FFT analysis through powergui block is showing empty in signal options.
Hi, Given that I have been unable to reproduce this issue, a possible workaround I have identified would be to connect the outp...

4ヶ月 前 | 0

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