How to read Audio File into Vector?
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Hello, I have to read a Audio File (.wav) into a vector.
I know how to plot it:
info = audioinfo('sound.wav');
[y, Fs] = audioread('sound.wav');
t = 0:1/Fs:info.Duration;
t = t(1:end-1);
plot(t,y);
xlabel('Time');
ylabel('Audio Signal');
But this Sript does not read the Audio into a Vector.
I also tried to read every single Sample, but this is to complex and I get error after error. Is there a simple way to do this?
2 个评论
Cris LaPierre
2020-7-15
It would be helpful if you could share the error messages as well as your sound.wav file.
dieter alfred
2020-7-15
采纳的回答
Sugar Daddy
2020-7-15
编辑：Sugar Daddy
2020-7-15
[y, Fs] = audioread('sound.wav');
sound_duration = length(y)/Fs;
t = 0:1/Fs:sound_duration;
t = t(1:end-1);
%%
soundsc(y,Fs);
%%
plot(t,y);
xlabel('Time');
ylabel('Audio Signal');
3 个评论
dieter alfred
2020-7-15
bob bob
2024-12-21
Any idea on how to reduce the # of points? I am trying to get the SVG to use in a graphic design setting so I will be altering the shape more in Illustrator but I would like to reduce the point by quite a bit
Walter Roberson
2025-12-29
更多回答（1 个）
Walter Roberson
2025-12-29
An audio file would not be read into a vector in the case where the audio file had multiple channels.
%approach #1
[y, Fs] = audioread('sound.wav');
y = y(:,1); %take the left channel only
t = (0:length(y)-1)/Fs;
%approach #2
[y, Fs] = audioread('sound.wav');
y = mean(y,2); %average all channels
t = (0:length(y)-1)/Fs;
Note that the code
t = 0:1/Fs:info.Duration;
t = t(1:end-1);
could result in a time vector that was one element too long or too short because of round-off errors in accumulating the 1/Fs in the colon operation.
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