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ahmed allaheani


Last seen: 3 years ago |  Active since 2016

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matlab newer version and toolboxes
that's great....thanx

6 years ago | 0

Question


matlab newer version and toolboxes
hello everyone i have matlab version R2017b (student license) and i purchased toolboxes (needed for school projects) also i p...

6 years ago | 2 answers | 0

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answers

Question


I am simulating a DPCM transmitter and receiver with a 5th order predictor and a 4-bit mid-riser quantizer using a recorded sound file, and the code is as follow:
clc; clear all; close all; y=audioread('MySpeech.wav'); %audioread used to read our speech signal sound(y); %plays t...

6 years ago | 0 answers | 0

0

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Question


the coefficients of the 3rd-order predictor
hello everyone : i am working on an FIR predictor i got the following sequence x(n)=[-1 -3 5 2] and this is the code to...

6 years ago | 2 answers | 0

2

answers

Answered
impulse response for this problem
i got some help from an expert, and this is the solution: n=[-2:10];% time vector x=n==0; % impulse input y=n==-1;% o...

6 years ago | 0

Question


impulse response for this problem
how can i obtain the impulse response and the plot: y(n)=x(n)-0.6y(n-1),for y(-1)=0 and n=[-2:10] i tried to understand ...

6 years ago | 1 answer | 0

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answer

Answered
about freqs_m function
thank you very much guys. the code is working perfectly

6 years ago | 0

Question


about freqs_m function
[N,Wn]=buttord(8000*pi,32000*pi,1.421,22.380,'s') [B,A]=butter(N,Wn,'s') freqs(B,A) [db,mag,pha,w]= freqs_m(B,A,3...

6 years ago | 3 answers | 0

3

answers

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i need to find the roots of the polynomial
>> p=[1 8 22 24 9]; >> roots(p) * _for some reason i get this error message_* Error in roots (line 32) r = zeros(0,1...

6 years ago | 1 answer | 0

1

answer

Question


how to color the area under the line??
i am using polar coordinates to plot an antenna coverage area shape. i got the code as following: <</matlabcentral/answers/up...

7 years ago | 1 answer | 0

1

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Question


i want to convert from direct to parallel form, and i am getting an error massage???
%H(z) coefficients [C,B,A] = dir2par([1 0 0 -1], [1 -0.8 0.37 -0.05]) n=[0:20] ; %%%% delta function %%%% [delta,n] = im...

8 years ago | 1 answer | 0

1

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Question


Undefined function or variable 'sigshift'. how can i shift the signal?
i got this code nx = [-3:3]; x = [-4 5 1 -2 -3 0 2]; subplot(2,2,1); stem(nx,x); axis([-4 8 -5 9]); ...

8 years ago | 1 answer | 0

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