MATLAB program code for controlling echo?

Answer 1

To control echo in MATLAB, you can use the audiorecorder function to capture audio and the audioplayer function to play it back with an echo effect. Here's a simple example:

fs = 44100; % Sampling frequency
recObj = audiorecorder(fs, 16, 1); % Create audio recorder
disp('Start speaking.')
recordblocking(recObj, 5); % Record for 5 seconds
disp('End of Recording.');

% Get the audio data
audioData = getaudiodata(recObj);

% Create echo effect by delaying the signal
delay = round(0.2 * fs); % Delay of 0.2 seconds
echoData = [audioData; zeros(delay, 1)]; % Add zeros for delay
echoData(delay+1:end) = echoData(delay+1:end) + 0.5 * audioData; % Add echo

% Play the audio with echo
sound(echoData, fs);

This code records audio for 5 seconds, applies an echo effect, and plays it back. Adjust the delay and gain factor (0.5 in this case) to modify the echo characteristics.