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Yes you are exactly right. This portion is related to detection for presence of specific tone. Thanks for u reply I just want ...

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Answered 5 years ago

I have written a code for DTMF tone generation. Now for decodiing purpose, i have written code for dtmfscore function ss = d...

11 Answers

Asked 5 years ago

I want to decode DTMF tones by using FIR Filter. The filters that are required to be used in filter bank are cnstructed by Sinus...

any help please....

25485 views

Responded 5 years ago

Hussam i want to benefit all from my query. Actually i was unable to upload question here. Now i have uploaded complete question...

hi thanks Wayne king for ur reply , if u allow me, i can send u exact question of book.since i cannot attach file here, so i thi...

this is my code I have written it to read the audio file and then plot it in time domain and frequency domain. ***************...

Sir Wyne King can i send u email and show you my work and can tell u details of issue thanks a lot

I am having a wave file. I have read this wave file in matlab. Its length is 5 seconds. Now i want to pass this audio file from ...

Posted 5 years ago

I have generated dtmf tones and i am listening them i tried to write them in wave file by using this command wavwrite(dtmf...

10 Answers

I have found the frequency spectrum of signal x=(4+cos(1000*pi*t+pi/3)).*(sin(500*pi*t+pi/4)) There is slight difference i...

8 Answers

for last one hour i am stcuk with this equation x(t) = *(summation sign k=-10 to k=10)* k^2 * e^(j*6*k*pi*t) How to sketch it...

Here is my code. till the time the alto_dur and teb_dur are exactly same vectors, then there is no problem but if i make al...

I am having Transfer Function H(z)= .5z(2)+1/ [z(2)+1] i want to plot its freq response using omega axis

7 Answers

I want to plot spectrum diagram which gives the frequency content of a signal x(t) for example if i draw spectrum of x(t) = 1...

the book code says A = linspace(0, 0.9, (length(y)*0.2)); %rise 20% of signal D = linspace(0.9, 0.8,(length(y)*0.05)); %dro...

Hi i have written a code which is executing perfectly for DTMF tones with this command. I am listening tones in speaker dtmf=dt...

6 Answers

Here is portion ofmy code alto = cell(1, length(keysa)); for i = 1:length(keysa) % The for loop continues till number of ...

Hi I am having the difference equation y[n] = -0.9y[n-1] +x [n] -x [n-1] I want to see its frequency response. What shou...

5 Answers

Hi i am stuck with this question Write a MATLAB program to simulate the following difference equation 8y[n] - 2y[n-1] - y[n-2] ...

Hi i am having a wave file I want to see its frequency response. How can i see that

I want to write a DTMF function which takes 5 inputs and give sound for it with gap of 1 seconds. I know how to concatinetane at...

Thanks

10924 views

Responded 7 years ago

lets suppose x=[1 2 3;4 5 6;7 8 9;10 11 12;13 14 15] size(x,1) % returns number of rows ans = ans = ans = ans ...

Posted 7 years ago

Hi My transfer function is H(z)= (1-z(-1)) / (1-3z(-1)+2z(-2)) How can i calculate its difference equation. I have calcula...

4 Answers

Hi i am having mat file its name is sig.mat it is having dtmf tones in it i m using x=load('sig.mat'); soundsc(x,8000) an...

I have written this code h1336=[]; L=50; fs=8000; fb=1336; h1336 = (2/L)*cos(2*pi*fb*(0:L-1)/fs); [H,F] = fr...

This is portion of my code function [dtmf]=dtmfdial(x,fs); %This function produces DTMF Tone corresponding to given %key nu...

how to find roots of equation having tan(x) or exp(x) I know how to calculate roots of polynomial having numerical values bu...

Lets suppose i am having one transfer function as H(z)= 1-2z/(1+3z) and the other is G(z) = 1-2z(-1)/ [1+3z(-1)] //N...

3 Answers

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