MATLAB: How to read audio file

audiobyte-wisenegative bytepositive byte

hi,

i want to read audio file by byte wise the positive byte converted to 16-bit binary, negative byte converted to 32-bit binary string?

Best Answer

You can use audioread: http://uk.mathworks.com/help/matlab/ref/audioread.html

Related Solutions

MATLAB: How to read .bin file

fid = fopen('YourFile.bin', 'r');
data = fread(fid, '*int16');
fclose(fid);

You might need to reshape() the data afterwards.

Depending on how the data was produced and what machine you are using to read it, you might find it necessary to swap the bytes in each integer. There is a MATLAB swapbytes() routine, or there is a FEX contribution http://www.mathworks.com/matlabcentral/fileexchange/17661-swapbytes-c-mex-function that is likely to be faster.

Alternately you might want to add the 'ieee-be' or 'ieee-le' option to the fread() call; that should save you from having to swap the bytes yourself, when the routine that produced the .bin file bothered to document the byte order.

Note: in general, .bin files are not 16 bit signed integers. ".bin" is any arbitrarily complicated binary format, and two .bin files produced by the same program will not necessarily be the same internal format.

MATLAB: How to read from audio device and write to .wav file

On Windows, you need a special device driver for that, and it is incompatible with directsound . See https://www.mathworks.com/matlabcentral/answers/386734-how-do-i-get-sound-data-from-a-speaker#answer_309137

Best Answer

Related Solutions

MATLAB: How to read .bin file

MATLAB: How to read from audio device and write to .wav file

Related Question