# How to generate echo sound by matlab?

## How to generate echo sound by matlab?

The function is to be called like this: output = echo_gen(input, fs, delay, amp); where input is a column vector with values between -1 and 1 representing a time series of digitized sound data. The input argument fs is the sampling rate.

## How do I hear audio in Matlab?

After you import or record audio, MATLAB supports several ways to listen to the data: For simple playback using a single function call, use sound or soundsc . For example, load a sample MAT-file that contains signal and sample rate data, and listen to the audio: load chirp.

**How do you print something in Matlab?**

How do I print (output) in Matlab?

- Type the name of a variable without a trailing semi-colon.
- Use the “disp” function.
- Use the “fprintf” function, which accepts a C printf-style formatting string.

**How do I make a diary in Matlab?**

diary creates a verbatim copy of your MATLAB session in a disk file (excluding graphics)….Write to a Diary File

- Turn on the diary function.
- Display the contents of the array you want to export.
- Turn off the diary function:
- Open the diary file my_data.

### What is Echo Matlab?

echo on turns on echoing for statements in all script files. When you turn on echoing, MATLAB® displays each line in the file in the Command Window as it runs. Normally, the statements in a script are not displayed during execution. Statement echoing is useful for debugging and for demonstrations.

### How do you stop echo in Matlab?

Select and plot the section that corresponds to lags greater than zero. The autocorrelation has a sharp peak at the lag at which the echo arrives. Cancel the echo by filtering the signal through an IIR system whose output, w , obeys w ( n ) + α w ( n – Δ ) = y ( n ) .

**What does the sound command do in MATLAB?**

sound (MATLAB Functions) sound(y,Fs), sends the signal in vector y (with sample frequency Fs ) to the speaker on PC and most UNIX platforms. Values in y are assumed to be in the range .

**What is FS in MATLAB?**

Why am I not able to see that “Fs” stands for “Sampling Frequency” in FDATool in Signal Processing Blocks… – MATLAB Answers – MATLAB Central.

#### What is use of ABS function in MATLAB?

Y = abs( X ) returns the absolute value of each element in array X . If X is complex, abs(X) returns the complex magnitude.

#### How to create an echo signal in MATLAB?

The function is to be called like this: output = echo_gen (input, fs, delay, amp); where input is a column vector with values between -1 and 1 representing a time series of digitized sound data. The input argument fs is the sampling rate. The sampling rate specifies how many samples we have in the data each second.

**Is there a way to hear sound in MATLAB?**

To hear the sound you will need to use desktop MATLAB or MATLAB Online. (Note that we are assuming mono audiofiles. You can load your own audio files using the audioread function in MATLAB. If the audio data has two columns, it is a stereo file, so use only one column of the data when testing your file.)

**How is an echo effect added to an audio signal?**

Initially the original signal xis delayed by 0.5 seconds and then multiplied by the attenuation constant alpha(0.65) to reduce the amplitude of the echo signal. Finally the delayed and attenuated signal is added back to the original signal to get the echo effect of the audio signal.

## How to generate Echo to an audio CD?

The function is to be called like this: where input is a column vector with values between -1 and 1 representing a time series of digitized sound data. The input argument fs is the sampling rate. The sampling rate specifies how many samples we have in the data each second. For example, an audio CD uses 44,100 samples per second.