one frame of 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?

Answer 1

[Jeffrey Girard]

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.

[seyed]

Thank you so much For a good description the audio mp3 is mono, 10' and Fs=44100 total of samples is 441000 (overlab=0,rowofbuffer=1) now we are 441000 frame? Given the samples, what is frame?