matlab articles

  How can I ensure that when I click the play button more than once in my MATLAB GUI, the audio is played only once, regardless of how many times I press the play button? I am making an audio equalizer in MATLAB guide. When I press the 'play' button more than once, it plays the audio signal as many times as I've pressed the button. What I want is that when I press the play button more than once, it should only play the audio signal once.   The code for play button is given below:   % PLAY BUTTON function pushbutton2_Callback(hObject, eventdata, handles) % hObject handle to pushbutton2 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) audiofile = handles.fullpathname; % the input audio file is stored in "audiofile" variable. [x, fs] = audioread(audiofile); guidata(hObject, handles); handles.CP=1; % Storing the value of slider in respective variables. slider_1 = get(

  I need to isolate certain values of a matrix based on whether one of the values fall in a certain range I am writing a word recognition program that takes an array from 'audioread' and applies a few methods to it to get a frequency spectrum. This spectrum is saved into a cell aray with each cell containing the frequency peaks for a quater of the word at a time.   So for each word it returns a 4x1 cell array. Each of these cells need to be further subdivided to frequency bands An example of one such a cell follows     % ans = 2×2 % 24.9843526628176 32 % 5.44020124026728 62 The first column indicates amplitude and the second indicates the index. I need to split the matrix into divisions that are 30 wide each. So all 2nd column values from 0 to 30 must be together and all from 30 to 60 etc. All the way up to 300.   The following code exert is the function that I wrote for this application for context to the question. It is probably f

  Hi, I'm wondering how I can place a sound file through a filter that I made through Matlab. The code works, I'm just wondering how to inject the audio file through the filter itself. I believe it should be some application of the fir1 command, though I'm not sure how to impliment it fully. The code is as follows:   Fl = 300 Fh = 3400 Samples = 44100 Wc = [Fl Fh]./Samples bbp = fir1(256, Wc, 'band'); figure(1) plot (1:length(bbp), bbp) figure(2) freqz(bbp,1) outbp = filter(bbp,1,y); audioread('song.wav'); info = audioinfo('song.wav') filename = 'song.wav'; [y,Fs] = audioread('song.wav'); audiowrite(filename,y,Fs); sound(y,Fs) And I am looking to filter song.wav with the bandpass filter I made, rather than the default fir1 command one. Thanks for the help NOTE:- Matlabsolutions.com  provide latest  MatLab Homework Help, MatLab Assignment Help  ,  Finance Assignment Help  for students, engineers and researchers in Multiple Branches

  Hi everyone, I want to plot the frequency spectrum graph of an original audio signal by using this code:   %input audio file with format: *.wav [samAud, samRate]=audioread('Toto_Africa.wav'); N=200; f=0:samRate/(N/2-1):samRate; samAud_fft=fft(samAud,N); %plot audio file in time domain figure(1) plot(samAud); %plot original audio signal in time domain %plot audio file in frequency domain figure(2) plot(f,abs(samAud_fft(1:N/2))/max(abs(samAud_fft(1:N/2)))); xlabel('Frequency (in hertz)'); However, I have trouble where the graph is only showing like this: Could somebody help me troubleshoot this problem? NOTE:- Matlabsolutions.com  provide latest  MatLab Homework Help, MatLab Assignment Help  ,  Finance Assignment Help  for students, engineers and researchers in Multiple Branches like ECE, EEE, CSE, Mechanical, Civil with 100% output.Matlab Code for B.E, B.Tech,M.E,M.Tech, Ph.D. Scholars with 100% privacy guaranteed. Get MATLAB projects with source code for your learn

  All matlab spectral descriptors as spectralSlope, spectralKurtosis,ect have the choice to use a time domain or a frequency domain input, but I'm unable the get the same (even aproximadetly) result, does anyone knows how to solve this?   Example:     clear; %load an audio [x,fs]=audioread('example.wav'); %windowing data win=round(0.025890625*fs); over=round(0.01875*fs); % 72% %Obtain the spectral data [s, f, t]=spectrogram(... x,... hamming(win),... over,... win,fs,'yaxis'); slope_normal(:,1)=spectralSlope(x,fs, Window=hamming(win),OverlapLength=over); slope_spec(:,1)=spectralSlope(s,f); figure;plot(slope_normal);hold on;plot(slope_sub);   NOTE:- Matlabsolutions.com  provide latest  MatLab Homework Help, MatLab Assignment Help  ,  Finance Assignment Help  for students, engineers and researchers in Multiple Branches like ECE, EEE, CSE, Mechanical, Civil with 100% output.Matlab Code for B.E, B.Tech,M.E,M.Tech, Ph.D. Scholars with 100% privacy guara

  Hello everyone, I'm doing research on an assignment that does LPC compression to a Speech file.   Here you see the code;   clear all; clc; %TAKING INPUT WAVEFILE, a1 = 'C:\Users\user\Desktop\WAV\a1.wav'; [y, Fs] =audioread(a1); % x=wavrecord(,); %LENGTH (IN SEC) OF INPUT WAVEFILE, t=length(y)./Fs; sprintf('Processing the wavefile "%s"', a1) sprintf('The wavefile is %3.2f seconds long', t) %THE ALGORITHM STARTS HERE, M=10; %prediction order [aCoeff, pitch_plot, voiced, gain] = f_ENCODER(y, Fs, M); %pitch_plot is pitch periods synth_speech = f_DECODER (aCoeff, pitch_plot, voiced, gain); Additionally, I want this code to calculate PSNR, MSError and SNR.   dis=numel(y)-numel(A2); A2=[A2,zeros(1,dis)]; PSNR = psnr(A2,y) MSError=mse(A2,y) SNR=snr(A2,y)   I found such a code on the internet. But I don't know what I should write instead of "A2" or for the others. NOTE:- Matlabsolutions.com  provide latest  MatLab Homework Help, M