How to Convert .wav file into binary?

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Asra Khalid 2018-3-7

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https://ww2.mathworks.cn/matlabcentral/answers/386841-how-to-convert-wav-file-into-binary

评论： Jan 2021-5-31

load handel.mat
filename = 'handel.wav';
audiowrite(filename,y,Fs);
clear y Fs
[y,Fs] = audioread('handel.wav');
sound(y,Fs)

I want to use the following code to convert the .wav audio file into binary. Which MATLAB command should be used for converting .wav file in to binary?

TIA.

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Jan 2018-3-7

编辑：Jan 2018-3-7

@Asra: Please try to explain the problem clearly. A binary stream of what? The signal or the contents of the file? If the data are stored in floating point format, do you want to convert the data to int8/16/32 at first or is is sufficient to interpret the binary representation of the IEEE754 doubles? Do you want a char vector or UINT8?

The less the readers have to guess, the easier and more likely matching is the answer.

Jan 2018-3-7

编辑：Jan 2018-3-7

[MOVED from section for answers]

I have to transmit sound file (.wav file) through LED's. For that I have to convert the .wav file in binary digits (0's & 1's) to turn LED's ON and OFF. I need the contents of the file to be converted into binary digits.

I hope it is more clear to you now.

[Please post comments in the section for comments]

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采纳的回答

Jan 2018-3-7

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/386841-how-to-convert-wav-file-into-binary#answer_308858

编辑：Jan 2018-3-7

在 MATLAB Online 中打开

If you simply want to get a bit-stream representation, it does not matter in any way, if the data are a wav file or a jpeg. A WAV file contains additional header information compared to the pure signal. Getting a bit-stream from it:

fid  = fopen(FileName, 'r');
data = fread(fid, [1, Inf], 'uint8');
fclose(fid);
bit = uint8(rem(floor((1 ./ [128, 64, 32, 16, 8, 4, 2, 1].') * data), 2));
bit = bit(:);

Now you have a bit stream of 1s and 0s stored in an UINT8 vector. This contains the complete data of the file and does not care in any way about the contents or format.