what is channel in audioread

I read the wav file and there are 2 NumChannels.

What are these two each? Is the first real number and the second imag number?

Answer 1

[Abhiram]

Hi @Tae-Gyeong Sung,

A channel in audio refers to a separate stream of audio data. The most common values are:

• 1 channel: Mono
• 2 channels: Stereo

For example, if you read a stereo WAV file as given below, you will see that ‘y’ will be a N-by-2 matrix where the first column is the left channel and the second column is the right channel:

[y, fs] = audioread(‘filename.wav');
size(y)

For more information on the ‘audioread’ function, refer to the given MATLAB Documentation:

https://www.mathworks.com/help/matlab/ref/audioread.html