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Recent content by javadakhlaghi

  1. J

    Neural Networks - Algorithms, Applications and Programming

    neural networks a comprehensive foundation ebook you can see this book Neural Networks: A Comprehensive Foundation (2nd Edition) by Simon Haykin also you can search in EDAboard.com in Search part Ebook Download/ Upload
  2. J

    Audio Processing, Music Note Generation

    if you know frequency of a note u can make it in MATLAB by this : y= cos(2*pi*f*(0:N-1)/fs); that f is note frequency and fs is sampling frequency(fs>2*f) and N is length of signal after these u can sent it to sound device by: sound(y,fs)
  3. J

    A description of chirp signal

    Re: chirp signal? Chirp Signal is also use in ESM system for frequency band Scanning and Detection
  4. J

    What is the best way to build a DC-DC converter?

    Re: Converter question What is your rating current? For low output current rating (<10 watts) best choice is Linear regulator (LM723) For high output current rating (>10 watts) best choice is switching regulator (buck regulator)
  5. J

    how to design a PCM-PWM converter for audio pA??

    You Can use PWM Imbeded Microcontroler
  6. J

    Help me understand this spectrum of signal problem

    Re: spectrum of signal In spectrum analysis of signal x yuor signal is shot and you can consider it as x=sin(n/4)×ones(1,7) ones(1,7) is rectangular Window from 0 to 7; dft of sin function is delta and dft of window is Sinc function therefor dft(x)=convolution(delta_functin ,Sinc_Function )
  7. J

    Matlab to VHDL for IIR BP filter

    Re: matlab to VHDL for IIR Quantization of coefficient In Implementation of Filter in VHDL Code (which is fix point 8 bit - 16 bit) cause Error you most Check Quantization effect in Filter Design Toolbox on filter performance
  8. J

    Mathematical model of Echo

    In Matlab You Can use filter function to genarate echo for example Signal_And_Echo=filter([1 zeros(1, delay) 1 ] , Signal)
  9. J

    how to design a oversampling FIR Filter in audio process??

    Re: how to design a oversampling FIR Filter in audio process for oversampling filter Design you can use filter design toolbox of matlab
  10. J

    Filtering waveform using matlab

    Re: Filtering using matlab you can use high pass filter to remove dc and none sharp (no Spike like) form data by use of this y=filter(b, a, data) which b ,a is filter coefficent
  11. J

    fm demodulation in matlab (PLL)

    fm modulation matlab DECIMATE function in Matlab reduce Data rate by 1/R therefore negative R is Not Correct

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