how to invert the samples of a audio signal
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hi friends....how to invert the samples of an audio signal using fliplr statement in matlab.
回答（6 个）
ramya
2011-3-20
0 个投票
5 个评论
Oleg Komarov
2011-3-20
why it's not possible. Do you get an error? If yes post the whole error message.
Do you get an unexpected result? Then post a brief example of input and the corresponding desired output.
ramya
2011-3-20
ramya
2011-3-20
Paulo Silva
2011-3-20
show us your code
ramya
2011-3-21
Walter Roberson
2011-3-20
0 个投票
Are you assigning the result of fliplr() to a variable? fliplr() returns a new array that is flipped, rather than affecting the existing array.
Daniel Shub
2011-3-21
0 个投票
Are you sure you have row data and not column data. Have you tried flipud?
Alex
2011-3-21
0 个投票
Why do you want to invert an audio signal? An inverted signal will sound the same as the original.
Do you want to reverse the order of the samples?
Walter Roberson
2012-6-29
0 个投票
Audio data is usually represented as by the columns of an array, rather than the rows of an arrow. Mono audio data would have only one column, so fliplr() applied to that column would be exactly the same as before. Stereo data would have two columns, so fliplr() applied to it would reverse the channels but only that. If you have column-oriented data and want to reverse the order of the samples, you need flipud() rather than fliplr()
Dipesh Mudatkar
2017-4-8
编辑：Walter Roberson
2017-4-8
Try this.
[y,fs]=audioread('put your audio file path'); % This will give you audio samples is y (It should be in row vector).
sound(y,fs); % Now listen it in correct ordered samples.
[m,n]=size(y);
if n==1 % If y is not row vector this convert it into row vector.
y=y';
end
y1=fliplr(y); % Now flip it and check audio.
sound(y1,fs); % Now, lest listen to your reverse audio.
1 个评论
Walter Roberson
2017-4-8
audioread will return one column per channel, not rows.
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