problem reading wav file

hi,

I created a folder in drive C on users. I copied the audio file .wav in it. i opened live Editor and did Alt/enter to create a text area and typed 'Assignment'. I then pressed Ctrl S to save it as 'Assignment _task' mlx onto the 'Assignment' folder in C. both the audio file and Mxs file appeared on matlab's 'my folder'. I then pressed Alt/enter to get into Code area. In Code area, i typed 'audioread('the wav file') and pressed Ctrl /enter. I came out with error as follows:

Error using audioread>readaudio (line 157)

The file type is not supported

Error in audioread (line 136)

[y, Fs] = readaudio (filename, range, datatype);

my question are 1./ of how can i get the 'range' and know the 'datatype'?2./ why it said 'audioread>readaudio and error in 'audioread' 3./ am i supposed to get x and Fs and rows and column?

Can anyone help me of how to read the audio please?

thank you

D.A

[DOORYODHUN AHKU]

Thank you very much Walter. Thats help.

Answer 1

[Walter Roberson]

of how can i get the 'range' and know the 'datatype'?

The code for audioread() says

if nargin < 2
    range = [1 inf];
    datatype = 'double';
elseif nargin < 3 && ischar(range)
    datatype = range;
    range = [1 inf];
elseif nargin < 3
    datatype = 'double';
end

You are not passing in anything other than the file name, so nargin < 2 so it is going to default to range [1 inf] and datatype 'double' .

That is, it is going to default to reading all of the file, and to returning the data as values in the range -1 <= x <= 1

Unless you have special requirements, those are the defaults that you want.

why it said 'audioread>readaudio and error in 'audioread'

The file type is not supported

Did you use a file name ending in .wav ? Did you use the .wav extension as part of the file name when you did the audioread() -- you should.

Also, some .wav files are not supported on some systems, as they require audio encoding schemes that are not supported on the system. You can see https://superuser.com/questions/72302/how-do-i-find-out-the-audio-format-of-a-wav-file/72340 for information on how to inquire about what audio encoding system the file is designed for.

Answer 2

[Krishna bharath Gali]

How to upload the audio file