MATLAB: One frame of audio

one of frame from audio

hi with run audioread ([y,Fs]=audioread('1.mp3')) in matlab y is contains several thousand of value now what is one of frame from y? Each of these values (from y) what they say? is it one frame?

Best Answer

info = audioinfo('1.mp3');
[y,Fs] = audioread('1.mp3');

Let's say that 1.mp3 is a stereo (i.e., two channel) audio file that is 10 seconds long and has a sampling frequency of 44,100Hz. You can tell this from the info structure that you created with audioinfo(). In this case, Fs will equal 44100 and y will be a 441000x2 single-precision matrix (44100Hz*10sec = 441000samples). Each row of y will correspond to a particular sample and each column will correspond to one of the audio channels. For an mp3 file, the data range of y is -1.0 to +1.0. For other types of files, you can check the documentation by typing doc audioread into MATLAB.

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MATLAB: Insert mp3 file in matlab

You can use audioread function

[y,fs]=audioread('yourfile.mp3')

To play your file

sound(y,fs)

Look at

doc audioread

MATLAB: Audio file (.wav) being overwritten

You have

speech = ('coch4.wav');
speech2 = speech;

So your speech2 filename is the same as your speech filename.

[y,Fs]=audioread(speech2); %don't use wavread or audioread

So you read from coch4.wav via speech2 filename

audiowrite(speech, speech_trimmed, 44100);

and then you write to the file name given by speech, which is the same as the filename given by speech2, so you are writing to the same file that you read the data from.

Best Answer

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MATLAB: Insert mp3 file in matlab

MATLAB: Audio file (.wav) being overwritten

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